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    Messages

    Create a Message
    client.Beta.Messages.New(ctx, params) (*BetaMessage, error)
    post/v1/messages
    Count tokens in a Message
    client.Beta.Messages.CountTokens(ctx, params) (*BetaMessageTokensCount, error)
    post/v1/messages/count_tokens
    ModelsExpand Collapse
    type BetaAllThinkingTurns struct{…}
    Type All
    Accepts one of the following:
    const AllAll All = "all"
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaBashCodeExecutionOutputBlock struct{…}
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    type BetaBashCodeExecutionOutputBlockParamResp struct{…}
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    type BetaBashCodeExecutionResultBlock struct{…}
    Content []BetaBashCodeExecutionOutputBlock
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    type BetaBashCodeExecutionResultBlockParamResp struct{…}
    Content []BetaBashCodeExecutionOutputBlockParamResp
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    type BetaBashCodeExecutionToolResultBlock struct{…}
    Content BetaBashCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaBashCodeExecutionToolResultError struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionResultBlock struct{…}
    Content []BetaBashCodeExecutionOutputBlock
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    ToolUseID string
    Type BashCodeExecutionToolResult
    Accepts one of the following:
    const BashCodeExecutionToolResultBashCodeExecutionToolResult BashCodeExecutionToolResult = "bash_code_execution_tool_result"
    type BetaBashCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaBashCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaBashCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorParamErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorParamErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorParamErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorParamErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionResultBlockParamResp struct{…}
    Content []BetaBashCodeExecutionOutputBlockParamResp
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    ToolUseID string
    Type BashCodeExecutionToolResult
    Accepts one of the following:
    const BashCodeExecutionToolResultBashCodeExecutionToolResult BashCodeExecutionToolResult = "bash_code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaBashCodeExecutionToolResultError struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorParamErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorParamErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorParamErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorParamErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaCacheControlEphemeral struct{…}
    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaCacheCreation struct{…}
    Ephemeral1hInputTokens int64

    The number of input tokens used to create the 1 hour cache entry.

    minimum0
    Ephemeral5mInputTokens int64

    The number of input tokens used to create the 5 minute cache entry.

    minimum0
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationConfig struct{…}
    Enabled bool
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationsConfigParamResp struct{…}
    Enabled booloptional
    type BetaCitationsDelta struct{…}
    Citation BetaCitationsDeltaCitationUnion
    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Type CitationsDelta
    Accepts one of the following:
    const CitationsDeltaCitationsDelta CitationsDelta = "citations_delta"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaClearThinking20251015Edit struct{…}
    Type ClearThinking20251015
    Accepts one of the following:
    const ClearThinking20251015ClearThinking20251015 ClearThinking20251015 = "clear_thinking_20251015"
    Keep BetaClearThinking20251015EditKeepUnionoptional

    Number of most recent assistant turns to keep thinking blocks for. Older turns will have their thinking blocks removed.

    Accepts one of the following:
    type BetaThinkingTurns struct{…}
    Type ThinkingTurns
    Accepts one of the following:
    const ThinkingTurnsThinkingTurns ThinkingTurns = "thinking_turns"
    Value int64
    type BetaAllThinkingTurns struct{…}
    Type All
    Accepts one of the following:
    const AllAll All = "all"
    All
    Accepts one of the following:
    const AllAll All = "all"
    type BetaClearThinking20251015EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedThinkingTurns int64

    Number of thinking turns that were cleared.

    minimum0
    Type ClearThinking20251015

    The type of context management edit applied.

    Accepts one of the following:
    const ClearThinking20251015ClearThinking20251015 ClearThinking20251015 = "clear_thinking_20251015"
    type BetaClearToolUses20250919Edit struct{…}
    Type ClearToolUses20250919
    Accepts one of the following:
    const ClearToolUses20250919ClearToolUses20250919 ClearToolUses20250919 = "clear_tool_uses_20250919"
    ClearAtLeast BetaInputTokensClearAtLeastoptional

    Minimum number of tokens that must be cleared when triggered. Context will only be modified if at least this many tokens can be removed.

    Type InputTokens
    Accepts one of the following:
    const InputTokensInputTokens InputTokens = "input_tokens"
    Value int64
    ClearToolInputs BetaClearToolUses20250919EditClearToolInputsUnionoptional

    Whether to clear all tool inputs (bool) or specific tool inputs to clear (list)

    Accepts one of the following:
    bool
    []string
    ExcludeTools []stringoptional

    Tool names whose uses are preserved from clearing

    Keep BetaToolUsesKeepoptional

    Number of tool uses to retain in the conversation

    Type ToolUses
    Accepts one of the following:
    const ToolUsesToolUses ToolUses = "tool_uses"
    Value int64
    Trigger BetaClearToolUses20250919EditTriggerUnionoptional

    Condition that triggers the context management strategy

    Accepts one of the following:
    type BetaInputTokensTrigger struct{…}
    Type InputTokens
    Accepts one of the following:
    const InputTokensInputTokens InputTokens = "input_tokens"
    Value int64
    type BetaToolUsesTrigger struct{…}
    Type ToolUses
    Accepts one of the following:
    const ToolUsesToolUses ToolUses = "tool_uses"
    Value int64
    type BetaClearToolUses20250919EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedToolUses int64

    Number of tool uses that were cleared.

    minimum0
    Type ClearToolUses20250919

    The type of context management edit applied.

    Accepts one of the following:
    const ClearToolUses20250919ClearToolUses20250919 ClearToolUses20250919 = "clear_tool_uses_20250919"
    type BetaCodeExecutionOutputBlock struct{…}
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    type BetaCodeExecutionOutputBlockParamResp struct{…}
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    type BetaCodeExecutionResultBlock struct{…}
    Content []BetaCodeExecutionOutputBlock
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    type BetaCodeExecutionResultBlockParamResp struct{…}
    Content []BetaCodeExecutionOutputBlockParamResp
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    type BetaCodeExecutionTool20250522 struct{…}
    Name CodeExecution

    Name of the tool.

    This is how the tool will be called by the model and in tool_use blocks.

    Accepts one of the following:
    const CodeExecutionCodeExecution CodeExecution = "code_execution"
    Type CodeExecution20250522
    Accepts one of the following:
    const CodeExecution20250522CodeExecution20250522 CodeExecution20250522 = "code_execution_20250522"
    AllowedCallers []stringoptional
    Accepts one of the following:
    const BetaCodeExecutionTool20250522AllowedCallerDirect BetaCodeExecutionTool20250522AllowedCaller = "direct"
    const BetaCodeExecutionTool20250522AllowedCallerCodeExecution20250825 BetaCodeExecutionTool20250522AllowedCaller = "code_execution_20250825"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    DeferLoading booloptional

    If true, tool will not be included in initial system prompt. Only loaded when returned via tool_reference from tool search.

    Strict booloptional
    type BetaCodeExecutionTool20250825 struct{…}
    Name CodeExecution

    Name of the tool.

    This is how the tool will be called by the model and in tool_use blocks.

    Accepts one of the following:
    const CodeExecutionCodeExecution CodeExecution = "code_execution"
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    AllowedCallers []stringoptional
    Accepts one of the following:
    const BetaCodeExecutionTool20250825AllowedCallerDirect BetaCodeExecutionTool20250825AllowedCaller = "direct"
    const BetaCodeExecutionTool20250825AllowedCallerCodeExecution20250825 BetaCodeExecutionTool20250825AllowedCaller = "code_execution_20250825"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    DeferLoading booloptional

    If true, tool will not be included in initial system prompt. Only loaded when returned via tool_reference from tool search.

    Strict booloptional
    type BetaCodeExecutionToolResultBlock struct{…}
    Content BetaCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaCodeExecutionToolResultError struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlock struct{…}
    Content []BetaCodeExecutionOutputBlock
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    ToolUseID string
    Type CodeExecutionToolResult
    Accepts one of the following:
    const CodeExecutionToolResultCodeExecutionToolResult CodeExecutionToolResult = "code_execution_tool_result"
    type BetaCodeExecutionToolResultBlockContentUnion interface{…}
    Accepts one of the following:
    type BetaCodeExecutionToolResultError struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlock struct{…}
    Content []BetaCodeExecutionOutputBlock
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    type BetaCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlockParamResp struct{…}
    Content []BetaCodeExecutionOutputBlockParamResp
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    ToolUseID string
    Type CodeExecutionToolResult
    Accepts one of the following:
    const CodeExecutionToolResultCodeExecutionToolResult CodeExecutionToolResult = "code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaCodeExecutionToolResultBlockParamContentUnionResp interface{…}
    Accepts one of the following:
    type BetaCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlockParamResp struct{…}
    Content []BetaCodeExecutionOutputBlockParamResp
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    type BetaCodeExecutionToolResultError struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionToolResultErrorCode string
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    type BetaCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaContainer struct{…}

    Information about the container used in the request (for the code execution tool)

    ID string

    Identifier for the container used in this request

    ExpiresAt Time

    The time at which the container will expire.

    formatdate-time
    Skills []BetaSkill

    Skills loaded in the container

    SkillID string

    Skill ID

    maxLength64
    minLength1
    Type BetaSkillType

    Type of skill - either 'anthropic' (built-in) or 'custom' (user-defined)

    Accepts one of the following:
    const BetaSkillTypeAnthropic BetaSkillType = "anthropic"
    const BetaSkillTypeCustom BetaSkillType = "custom"
    Version string

    Skill version or 'latest' for most recent version

    maxLength64
    minLength1
    type BetaContainerParamsResp struct{…}

    Container parameters with skills to be loaded.

    ID stringoptional

    Container id

    Skills []BetaSkillParamsRespoptional

    List of skills to load in the container

    SkillID string

    Skill ID

    maxLength64
    minLength1
    Type BetaSkillParamsType

    Type of skill - either 'anthropic' (built-in) or 'custom' (user-defined)

    Accepts one of the following:
    const BetaSkillParamsTypeAnthropic BetaSkillParamsType = "anthropic"
    const BetaSkillParamsTypeCustom BetaSkillParamsType = "custom"
    Version stringoptional

    Skill version or 'latest' for most recent version

    maxLength64
    minLength1
    type BetaContainerUploadBlock struct{…}

    Response model for a file uploaded to the container.

    FileID string
    Type ContainerUpload
    Accepts one of the following:
    const ContainerUploadContainerUpload ContainerUpload = "container_upload"
    type BetaContainerUploadBlockParamResp struct{…}

    A content block that represents a file to be uploaded to the container Files uploaded via this block will be available in the container's input directory.

    FileID string
    Type ContainerUpload
    Accepts one of the following:
    const ContainerUploadContainerUpload ContainerUpload = "container_upload"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaContentBlockUnion interface{…}

    Response model for a file uploaded to the container.

    Accepts one of the following:
    type BetaTextBlock struct{…}
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaThinkingBlock struct{…}
    Signature string
    Thinking string
    Type Thinking
    Accepts one of the following:
    const ThinkingThinking Thinking = "thinking"
    type BetaRedactedThinkingBlock struct{…}
    Data string
    Type RedactedThinking
    Accepts one of the following:
    const RedactedThinkingRedactedThinking RedactedThinking = "redacted_thinking"
    type BetaToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string
    Type ToolUse
    Accepts one of the following:
    const ToolUseToolUse ToolUse = "tool_use"
    Caller BetaToolUseBlockCallerUnionoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaServerToolUseBlock struct{…}
    ID string
    Caller BetaServerToolUseBlockCallerUnion

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    Input map[string, any]
    Name BetaServerToolUseBlockName
    Accepts one of the following:
    const BetaServerToolUseBlockNameWebSearch BetaServerToolUseBlockName = "web_search"
    const BetaServerToolUseBlockNameWebFetch BetaServerToolUseBlockName = "web_fetch"
    const BetaServerToolUseBlockNameCodeExecution BetaServerToolUseBlockName = "code_execution"
    const BetaServerToolUseBlockNameBashCodeExecution BetaServerToolUseBlockName = "bash_code_execution"
    const BetaServerToolUseBlockNameTextEditorCodeExecution BetaServerToolUseBlockName = "text_editor_code_execution"
    const BetaServerToolUseBlockNameToolSearchToolRegex BetaServerToolUseBlockName = "tool_search_tool_regex"
    const BetaServerToolUseBlockNameToolSearchToolBm25 BetaServerToolUseBlockName = "tool_search_tool_bm25"
    Type ServerToolUse
    Accepts one of the following:
    const ServerToolUseServerToolUse ServerToolUse = "server_tool_use"
    type BetaWebSearchToolResultBlock struct{…}
    Content BetaWebSearchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebSearchToolResultError struct{…}
    ErrorCode BetaWebSearchToolResultErrorCode
    Accepts one of the following:
    const BetaWebSearchToolResultErrorCodeInvalidToolInput BetaWebSearchToolResultErrorCode = "invalid_tool_input"
    const BetaWebSearchToolResultErrorCodeUnavailable BetaWebSearchToolResultErrorCode = "unavailable"
    const BetaWebSearchToolResultErrorCodeMaxUsesExceeded BetaWebSearchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebSearchToolResultErrorCodeTooManyRequests BetaWebSearchToolResultErrorCode = "too_many_requests"
    const BetaWebSearchToolResultErrorCodeQueryTooLong BetaWebSearchToolResultErrorCode = "query_too_long"
    Type WebSearchToolResultError
    Accepts one of the following:
    const WebSearchToolResultErrorWebSearchToolResultError WebSearchToolResultError = "web_search_tool_result_error"
    type BetaWebSearchToolResultBlockContentArray []BetaWebSearchResultBlock
    EncryptedContent string
    PageAge string
    Title string
    Type WebSearchResult
    Accepts one of the following:
    const WebSearchResultWebSearchResult WebSearchResult = "web_search_result"
    URL string
    ToolUseID string
    Type WebSearchToolResult
    Accepts one of the following:
    const WebSearchToolResultWebSearchToolResult WebSearchToolResult = "web_search_tool_result"
    type BetaWebFetchToolResultBlock struct{…}
    Content BetaWebFetchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebFetchToolResultErrorBlock struct{…}
    ErrorCode BetaWebFetchToolResultErrorCode
    Accepts one of the following:
    const BetaWebFetchToolResultErrorCodeInvalidToolInput BetaWebFetchToolResultErrorCode = "invalid_tool_input"
    const BetaWebFetchToolResultErrorCodeURLTooLong BetaWebFetchToolResultErrorCode = "url_too_long"
    const BetaWebFetchToolResultErrorCodeURLNotAllowed BetaWebFetchToolResultErrorCode = "url_not_allowed"
    const BetaWebFetchToolResultErrorCodeURLNotAccessible BetaWebFetchToolResultErrorCode = "url_not_accessible"
    const BetaWebFetchToolResultErrorCodeUnsupportedContentType BetaWebFetchToolResultErrorCode = "unsupported_content_type"
    const BetaWebFetchToolResultErrorCodeTooManyRequests BetaWebFetchToolResultErrorCode = "too_many_requests"
    const BetaWebFetchToolResultErrorCodeMaxUsesExceeded BetaWebFetchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebFetchToolResultErrorCodeUnavailable BetaWebFetchToolResultErrorCode = "unavailable"
    Type WebFetchToolResultError
    Accepts one of the following:
    const WebFetchToolResultErrorWebFetchToolResultError WebFetchToolResultError = "web_fetch_tool_result_error"
    type BetaWebFetchBlock struct{…}
    Content BetaDocumentBlock
    Citations BetaCitationConfig

    Citation configuration for the document

    Enabled bool
    Source BetaDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    Title string

    The title of the document

    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    RetrievedAt string

    ISO 8601 timestamp when the content was retrieved

    Type WebFetchResult
    Accepts one of the following:
    const WebFetchResultWebFetchResult WebFetchResult = "web_fetch_result"
    URL string

    Fetched content URL

    ToolUseID string
    Type WebFetchToolResult
    Accepts one of the following:
    const WebFetchToolResultWebFetchToolResult WebFetchToolResult = "web_fetch_tool_result"
    type BetaCodeExecutionToolResultBlock struct{…}
    Content BetaCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaCodeExecutionToolResultError struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlock struct{…}
    Content []BetaCodeExecutionOutputBlock
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    ToolUseID string
    Type CodeExecutionToolResult
    Accepts one of the following:
    const CodeExecutionToolResultCodeExecutionToolResult CodeExecutionToolResult = "code_execution_tool_result"
    type BetaBashCodeExecutionToolResultBlock struct{…}
    Content BetaBashCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaBashCodeExecutionToolResultError struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionResultBlock struct{…}
    Content []BetaBashCodeExecutionOutputBlock
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    ToolUseID string
    Type BashCodeExecutionToolResult
    Accepts one of the following:
    const BashCodeExecutionToolResultBashCodeExecutionToolResult BashCodeExecutionToolResult = "bash_code_execution_tool_result"
    type BetaTextEditorCodeExecutionToolResultBlock struct{…}
    Content BetaTextEditorCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaTextEditorCodeExecutionToolResultError struct{…}
    ErrorCode BetaTextEditorCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaTextEditorCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeUnavailable BetaTextEditorCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaTextEditorCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaTextEditorCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeFileNotFound BetaTextEditorCodeExecutionToolResultErrorErrorCode = "file_not_found"
    ErrorMessage string
    Type TextEditorCodeExecutionToolResultError
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultErrorTextEditorCodeExecutionToolResultError TextEditorCodeExecutionToolResultError = "text_editor_code_execution_tool_result_error"
    type BetaTextEditorCodeExecutionViewResultBlock struct{…}
    Content string
    FileType BetaTextEditorCodeExecutionViewResultBlockFileType
    Accepts one of the following:
    const BetaTextEditorCodeExecutionViewResultBlockFileTypeText BetaTextEditorCodeExecutionViewResultBlockFileType = "text"
    const BetaTextEditorCodeExecutionViewResultBlockFileTypeImage BetaTextEditorCodeExecutionViewResultBlockFileType = "image"
    const BetaTextEditorCodeExecutionViewResultBlockFileTypePDF BetaTextEditorCodeExecutionViewResultBlockFileType = "pdf"
    NumLines int64
    StartLine int64
    TotalLines int64
    Type TextEditorCodeExecutionViewResult
    Accepts one of the following:
    const TextEditorCodeExecutionViewResultTextEditorCodeExecutionViewResult TextEditorCodeExecutionViewResult = "text_editor_code_execution_view_result"
    type BetaTextEditorCodeExecutionCreateResultBlock struct{…}
    IsFileUpdate bool
    Type TextEditorCodeExecutionCreateResult
    Accepts one of the following:
    const TextEditorCodeExecutionCreateResultTextEditorCodeExecutionCreateResult TextEditorCodeExecutionCreateResult = "text_editor_code_execution_create_result"
    type BetaTextEditorCodeExecutionStrReplaceResultBlock struct{…}
    Lines []string
    NewLines int64
    NewStart int64
    OldLines int64
    OldStart int64
    Type TextEditorCodeExecutionStrReplaceResult
    Accepts one of the following:
    const TextEditorCodeExecutionStrReplaceResultTextEditorCodeExecutionStrReplaceResult TextEditorCodeExecutionStrReplaceResult = "text_editor_code_execution_str_replace_result"
    ToolUseID string
    Type TextEditorCodeExecutionToolResult
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultTextEditorCodeExecutionToolResult TextEditorCodeExecutionToolResult = "text_editor_code_execution_tool_result"
    type BetaToolSearchToolResultBlock struct{…}
    Content BetaToolSearchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaToolSearchToolResultError struct{…}
    ErrorCode BetaToolSearchToolResultErrorErrorCode
    Accepts one of the following:
    const BetaToolSearchToolResultErrorErrorCodeInvalidToolInput BetaToolSearchToolResultErrorErrorCode = "invalid_tool_input"
    const BetaToolSearchToolResultErrorErrorCodeUnavailable BetaToolSearchToolResultErrorErrorCode = "unavailable"
    const BetaToolSearchToolResultErrorErrorCodeTooManyRequests BetaToolSearchToolResultErrorErrorCode = "too_many_requests"
    const BetaToolSearchToolResultErrorErrorCodeExecutionTimeExceeded BetaToolSearchToolResultErrorErrorCode = "execution_time_exceeded"
    ErrorMessage string
    Type ToolSearchToolResultError
    Accepts one of the following:
    const ToolSearchToolResultErrorToolSearchToolResultError ToolSearchToolResultError = "tool_search_tool_result_error"
    type BetaToolSearchToolSearchResultBlock struct{…}
    ToolReferences []BetaToolReferenceBlock
    ToolName string
    Type ToolReference
    Accepts one of the following:
    const ToolReferenceToolReference ToolReference = "tool_reference"
    Type ToolSearchToolSearchResult
    Accepts one of the following:
    const ToolSearchToolSearchResultToolSearchToolSearchResult ToolSearchToolSearchResult = "tool_search_tool_search_result"
    ToolUseID string
    Type ToolSearchToolResult
    Accepts one of the following:
    const ToolSearchToolResultToolSearchToolResult ToolSearchToolResult = "tool_search_tool_result"
    type BetaMCPToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string

    The name of the MCP tool

    ServerName string

    The name of the MCP server

    Type MCPToolUse
    Accepts one of the following:
    const MCPToolUseMCPToolUse MCPToolUse = "mcp_tool_use"
    type BetaMCPToolResultBlock struct{…}
    Content BetaMCPToolResultBlockContentUnion
    Accepts one of the following:
    string
    type BetaMCPToolResultBlockContentBetaMCPToolResultBlockContent []BetaTextBlock
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    IsError bool
    ToolUseID string
    Type MCPToolResult
    Accepts one of the following:
    const MCPToolResultMCPToolResult MCPToolResult = "mcp_tool_result"
    type BetaContainerUploadBlock struct{…}

    Response model for a file uploaded to the container.

    FileID string
    Type ContainerUpload
    Accepts one of the following:
    const ContainerUploadContainerUpload ContainerUpload = "container_upload"
    type BetaContentBlockParamUnionResp interface{…}

    Regular text content.

    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaRequestDocumentBlock struct{…}
    Source BetaRequestDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaContentBlockSource struct{…}
    Content BetaContentBlockSourceContentUnion
    Accepts one of the following:
    string
    []BetaContentBlockSourceContentUnion
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type Content
    Accepts one of the following:
    const ContentContent Content = "content"
    type BetaURLPDFSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileDocumentSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    Context stringoptional
    Title stringoptional
    type BetaSearchResultBlockParamResp struct{…}
    Content []BetaTextBlockParamResp
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Source string
    Title string
    Type SearchResult
    Accepts one of the following:
    const SearchResultSearchResult SearchResult = "search_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    type BetaThinkingBlockParamResp struct{…}
    Signature string
    Thinking string
    Type Thinking
    Accepts one of the following:
    const ThinkingThinking Thinking = "thinking"
    type BetaRedactedThinkingBlockParamResp struct{…}
    Data string
    Type RedactedThinking
    Accepts one of the following:
    const RedactedThinkingRedactedThinking RedactedThinking = "redacted_thinking"
    type BetaToolUseBlockParamResp struct{…}
    ID string
    Input map[string, any]
    Name string
    Type ToolUse
    Accepts one of the following:
    const ToolUseToolUse ToolUse = "tool_use"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Caller BetaToolUseBlockParamCallerUnionRespoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaToolResultBlockParamResp struct{…}
    ToolUseID string
    Type ToolResult
    Accepts one of the following:
    const ToolResultToolResult ToolResult = "tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Content []BetaToolResultBlockParamContentUnionRespoptional
    Accepts one of the following:
    []BetaToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaSearchResultBlockParamResp struct{…}
    Content []BetaTextBlockParamResp
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Source string
    Title string
    Type SearchResult
    Accepts one of the following:
    const SearchResultSearchResult SearchResult = "search_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    type BetaRequestDocumentBlock struct{…}
    Source BetaRequestDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaContentBlockSource struct{…}
    Content BetaContentBlockSourceContentUnion
    Accepts one of the following:
    string
    []BetaContentBlockSourceContentUnion
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type Content
    Accepts one of the following:
    const ContentContent Content = "content"
    type BetaURLPDFSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileDocumentSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    Context stringoptional
    Title stringoptional
    type BetaToolReferenceBlockParamResp struct{…}

    Tool reference block that can be included in tool_result content.

    ToolName string
    Type ToolReference
    Accepts one of the following:
    const ToolReferenceToolReference ToolReference = "tool_reference"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    IsError booloptional
    type BetaServerToolUseBlockParamResp struct{…}
    ID string
    Input map[string, any]
    Name BetaServerToolUseBlockParamName
    Accepts one of the following:
    const BetaServerToolUseBlockParamNameWebSearch BetaServerToolUseBlockParamName = "web_search"
    const BetaServerToolUseBlockParamNameWebFetch BetaServerToolUseBlockParamName = "web_fetch"
    const BetaServerToolUseBlockParamNameCodeExecution BetaServerToolUseBlockParamName = "code_execution"
    const BetaServerToolUseBlockParamNameBashCodeExecution BetaServerToolUseBlockParamName = "bash_code_execution"
    const BetaServerToolUseBlockParamNameTextEditorCodeExecution BetaServerToolUseBlockParamName = "text_editor_code_execution"
    const BetaServerToolUseBlockParamNameToolSearchToolRegex BetaServerToolUseBlockParamName = "tool_search_tool_regex"
    const BetaServerToolUseBlockParamNameToolSearchToolBm25 BetaServerToolUseBlockParamName = "tool_search_tool_bm25"
    Type ServerToolUse
    Accepts one of the following:
    const ServerToolUseServerToolUse ServerToolUse = "server_tool_use"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Caller BetaServerToolUseBlockParamCallerUnionRespoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaWebSearchToolResultBlockParamResp struct{…}
    Content BetaWebSearchToolResultBlockParamContentUnionResp
    Accepts one of the following:
    []BetaWebSearchResultBlockParamResp
    EncryptedContent string
    Title string
    Type WebSearchResult
    Accepts one of the following:
    const WebSearchResultWebSearchResult WebSearchResult = "web_search_result"
    URL string
    PageAge stringoptional
    type BetaWebSearchToolRequestError struct{…}
    ErrorCode BetaWebSearchToolResultErrorCode
    Accepts one of the following:
    const BetaWebSearchToolResultErrorCodeInvalidToolInput BetaWebSearchToolResultErrorCode = "invalid_tool_input"
    const BetaWebSearchToolResultErrorCodeUnavailable BetaWebSearchToolResultErrorCode = "unavailable"
    const BetaWebSearchToolResultErrorCodeMaxUsesExceeded BetaWebSearchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebSearchToolResultErrorCodeTooManyRequests BetaWebSearchToolResultErrorCode = "too_many_requests"
    const BetaWebSearchToolResultErrorCodeQueryTooLong BetaWebSearchToolResultErrorCode = "query_too_long"
    Type WebSearchToolResultError
    Accepts one of the following:
    const WebSearchToolResultErrorWebSearchToolResultError WebSearchToolResultError = "web_search_tool_result_error"
    ToolUseID string
    Type WebSearchToolResult
    Accepts one of the following:
    const WebSearchToolResultWebSearchToolResult WebSearchToolResult = "web_search_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaWebFetchToolResultBlockParamResp struct{…}
    Content BetaWebFetchToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaWebFetchToolResultErrorBlockParamResp struct{…}
    ErrorCode BetaWebFetchToolResultErrorCode
    Accepts one of the following:
    const BetaWebFetchToolResultErrorCodeInvalidToolInput BetaWebFetchToolResultErrorCode = "invalid_tool_input"
    const BetaWebFetchToolResultErrorCodeURLTooLong BetaWebFetchToolResultErrorCode = "url_too_long"
    const BetaWebFetchToolResultErrorCodeURLNotAllowed BetaWebFetchToolResultErrorCode = "url_not_allowed"
    const BetaWebFetchToolResultErrorCodeURLNotAccessible BetaWebFetchToolResultErrorCode = "url_not_accessible"
    const BetaWebFetchToolResultErrorCodeUnsupportedContentType BetaWebFetchToolResultErrorCode = "unsupported_content_type"
    const BetaWebFetchToolResultErrorCodeTooManyRequests BetaWebFetchToolResultErrorCode = "too_many_requests"
    const BetaWebFetchToolResultErrorCodeMaxUsesExceeded BetaWebFetchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebFetchToolResultErrorCodeUnavailable BetaWebFetchToolResultErrorCode = "unavailable"
    Type WebFetchToolResultError
    Accepts one of the following:
    const WebFetchToolResultErrorWebFetchToolResultError WebFetchToolResultError = "web_fetch_tool_result_error"
    type BetaWebFetchBlockParamResp struct{…}
    Content BetaRequestDocumentBlock
    Source BetaRequestDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaContentBlockSource struct{…}
    Content BetaContentBlockSourceContentUnion
    Accepts one of the following:
    string
    []BetaContentBlockSourceContentUnion
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type Content
    Accepts one of the following:
    const ContentContent Content = "content"
    type BetaURLPDFSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileDocumentSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    Context stringoptional
    Title stringoptional
    Type WebFetchResult
    Accepts one of the following:
    const WebFetchResultWebFetchResult WebFetchResult = "web_fetch_result"
    URL string

    Fetched content URL

    RetrievedAt stringoptional

    ISO 8601 timestamp when the content was retrieved

    ToolUseID string
    Type WebFetchToolResult
    Accepts one of the following:
    const WebFetchToolResultWebFetchToolResult WebFetchToolResult = "web_fetch_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlockParamResp struct{…}
    Content []BetaCodeExecutionOutputBlockParamResp
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    ToolUseID string
    Type CodeExecutionToolResult
    Accepts one of the following:
    const CodeExecutionToolResultCodeExecutionToolResult CodeExecutionToolResult = "code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaBashCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaBashCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaBashCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorParamErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorParamErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorParamErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorParamErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionResultBlockParamResp struct{…}
    Content []BetaBashCodeExecutionOutputBlockParamResp
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    ToolUseID string
    Type BashCodeExecutionToolResult
    Accepts one of the following:
    const BashCodeExecutionToolResultBashCodeExecutionToolResult BashCodeExecutionToolResult = "bash_code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaTextEditorCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaTextEditorCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaTextEditorCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaTextEditorCodeExecutionToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeInvalidToolInput BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeUnavailable BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "unavailable"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeTooManyRequests BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "too_many_requests"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeExecutionTimeExceeded BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "execution_time_exceeded"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeFileNotFound BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "file_not_found"
    Type TextEditorCodeExecutionToolResultError
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultErrorTextEditorCodeExecutionToolResultError TextEditorCodeExecutionToolResultError = "text_editor_code_execution_tool_result_error"
    ErrorMessage stringoptional
    type BetaTextEditorCodeExecutionViewResultBlockParamResp struct{…}
    Content string
    FileType BetaTextEditorCodeExecutionViewResultBlockParamFileType
    Accepts one of the following:
    const BetaTextEditorCodeExecutionViewResultBlockParamFileTypeText BetaTextEditorCodeExecutionViewResultBlockParamFileType = "text"
    const BetaTextEditorCodeExecutionViewResultBlockParamFileTypeImage BetaTextEditorCodeExecutionViewResultBlockParamFileType = "image"
    const BetaTextEditorCodeExecutionViewResultBlockParamFileTypePDF BetaTextEditorCodeExecutionViewResultBlockParamFileType = "pdf"
    Type TextEditorCodeExecutionViewResult
    Accepts one of the following:
    const TextEditorCodeExecutionViewResultTextEditorCodeExecutionViewResult TextEditorCodeExecutionViewResult = "text_editor_code_execution_view_result"
    NumLines int64optional
    StartLine int64optional
    TotalLines int64optional
    type BetaTextEditorCodeExecutionCreateResultBlockParamResp struct{…}
    IsFileUpdate bool
    Type TextEditorCodeExecutionCreateResult
    Accepts one of the following:
    const TextEditorCodeExecutionCreateResultTextEditorCodeExecutionCreateResult TextEditorCodeExecutionCreateResult = "text_editor_code_execution_create_result"
    type BetaTextEditorCodeExecutionStrReplaceResultBlockParamResp struct{…}
    Type TextEditorCodeExecutionStrReplaceResult
    Accepts one of the following:
    const TextEditorCodeExecutionStrReplaceResultTextEditorCodeExecutionStrReplaceResult TextEditorCodeExecutionStrReplaceResult = "text_editor_code_execution_str_replace_result"
    Lines []stringoptional
    NewLines int64optional
    NewStart int64optional
    OldLines int64optional
    OldStart int64optional
    ToolUseID string
    Type TextEditorCodeExecutionToolResult
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultTextEditorCodeExecutionToolResult TextEditorCodeExecutionToolResult = "text_editor_code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaToolSearchToolResultBlockParamResp struct{…}
    Content BetaToolSearchToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaToolSearchToolResultErrorParamResp struct{…}
    ErrorCode BetaToolSearchToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaToolSearchToolResultErrorParamErrorCodeInvalidToolInput BetaToolSearchToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaToolSearchToolResultErrorParamErrorCodeUnavailable BetaToolSearchToolResultErrorParamErrorCode = "unavailable"
    const BetaToolSearchToolResultErrorParamErrorCodeTooManyRequests BetaToolSearchToolResultErrorParamErrorCode = "too_many_requests"
    const BetaToolSearchToolResultErrorParamErrorCodeExecutionTimeExceeded BetaToolSearchToolResultErrorParamErrorCode = "execution_time_exceeded"
    Type ToolSearchToolResultError
    Accepts one of the following:
    const ToolSearchToolResultErrorToolSearchToolResultError ToolSearchToolResultError = "tool_search_tool_result_error"
    type BetaToolSearchToolSearchResultBlockParamResp struct{…}
    ToolReferences []BetaToolReferenceBlockParamResp
    ToolName string
    Type ToolReference
    Accepts one of the following:
    const ToolReferenceToolReference ToolReference = "tool_reference"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type ToolSearchToolSearchResult
    Accepts one of the following:
    const ToolSearchToolSearchResultToolSearchToolSearchResult ToolSearchToolSearchResult = "tool_search_tool_search_result"
    ToolUseID string
    Type ToolSearchToolResult
    Accepts one of the following:
    const ToolSearchToolResultToolSearchToolResult ToolSearchToolResult = "tool_search_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaMCPToolUseBlockParamResp struct{…}
    ID string
    Input map[string, any]
    Name string
    ServerName string

    The name of the MCP server

    Type MCPToolUse
    Accepts one of the following:
    const MCPToolUseMCPToolUse MCPToolUse = "mcp_tool_use"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaRequestMCPToolResultBlockParamResp struct{…}
    ToolUseID string
    Type MCPToolResult
    Accepts one of the following:
    const MCPToolResultMCPToolResult MCPToolResult = "mcp_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Content BetaRequestMCPToolResultBlockParamContentUnionRespoptional
    Accepts one of the following:
    string
    []BetaTextBlockParamResp
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    IsError booloptional
    type BetaContainerUploadBlockParamResp struct{…}

    A content block that represents a file to be uploaded to the container Files uploaded via this block will be available in the container's input directory.

    FileID string
    Type ContainerUpload
    Accepts one of the following:
    const ContainerUploadContainerUpload ContainerUpload = "container_upload"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaContentBlockSource struct{…}
    Content BetaContentBlockSourceContentUnion
    Accepts one of the following:
    string
    []BetaContentBlockSourceContentUnion
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type Content
    Accepts one of the following:
    const ContentContent Content = "content"
    type BetaContentBlockSourceContentUnion interface{…}
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaContextManagementConfig struct{…}
    Edits []BetaContextManagementConfigEditUnionoptional

    List of context management edits to apply

    Accepts one of the following:
    type BetaClearToolUses20250919Edit struct{…}
    Type ClearToolUses20250919
    Accepts one of the following:
    const ClearToolUses20250919ClearToolUses20250919 ClearToolUses20250919 = "clear_tool_uses_20250919"
    ClearAtLeast BetaInputTokensClearAtLeastoptional

    Minimum number of tokens that must be cleared when triggered. Context will only be modified if at least this many tokens can be removed.

    Type InputTokens
    Accepts one of the following:
    const InputTokensInputTokens InputTokens = "input_tokens"
    Value int64
    ClearToolInputs BetaClearToolUses20250919EditClearToolInputsUnionoptional

    Whether to clear all tool inputs (bool) or specific tool inputs to clear (list)

    Accepts one of the following:
    bool
    []string
    ExcludeTools []stringoptional

    Tool names whose uses are preserved from clearing

    Keep BetaToolUsesKeepoptional

    Number of tool uses to retain in the conversation

    Type ToolUses
    Accepts one of the following:
    const ToolUsesToolUses ToolUses = "tool_uses"
    Value int64
    Trigger BetaClearToolUses20250919EditTriggerUnionoptional

    Condition that triggers the context management strategy

    Accepts one of the following:
    type BetaInputTokensTrigger struct{…}
    Type InputTokens
    Accepts one of the following:
    const InputTokensInputTokens InputTokens = "input_tokens"
    Value int64
    type BetaToolUsesTrigger struct{…}
    Type ToolUses
    Accepts one of the following:
    const ToolUsesToolUses ToolUses = "tool_uses"
    Value int64
    type BetaClearThinking20251015Edit struct{…}
    Type ClearThinking20251015
    Accepts one of the following:
    const ClearThinking20251015ClearThinking20251015 ClearThinking20251015 = "clear_thinking_20251015"
    Keep BetaClearThinking20251015EditKeepUnionoptional

    Number of most recent assistant turns to keep thinking blocks for. Older turns will have their thinking blocks removed.

    Accepts one of the following:
    type BetaThinkingTurns struct{…}
    Type ThinkingTurns
    Accepts one of the following:
    const ThinkingTurnsThinkingTurns ThinkingTurns = "thinking_turns"
    Value int64
    type BetaAllThinkingTurns struct{…}
    Type All
    Accepts one of the following:
    const AllAll All = "all"
    All
    Accepts one of the following:
    const AllAll All = "all"
    type BetaContextManagementResponse struct{…}
    AppliedEdits []BetaContextManagementResponseAppliedEditUnion

    List of context management edits that were applied.

    Accepts one of the following:
    type BetaClearToolUses20250919EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedToolUses int64

    Number of tool uses that were cleared.

    minimum0
    Type ClearToolUses20250919

    The type of context management edit applied.

    Accepts one of the following:
    const ClearToolUses20250919ClearToolUses20250919 ClearToolUses20250919 = "clear_tool_uses_20250919"
    type BetaClearThinking20251015EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedThinkingTurns int64

    Number of thinking turns that were cleared.

    minimum0
    Type ClearThinking20251015

    The type of context management edit applied.

    Accepts one of the following:
    const ClearThinking20251015ClearThinking20251015 ClearThinking20251015 = "clear_thinking_20251015"
    type BetaCountTokensContextManagementResponse struct{…}
    OriginalInputTokens int64

    The original token count before context management was applied

    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaDocumentBlock struct{…}
    Citations BetaCitationConfig

    Citation configuration for the document

    Enabled bool
    Source BetaDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    Title string

    The title of the document

    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    type BetaFileDocumentSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaInputJSONDelta struct{…}
    PartialJSON string
    Type InputJSONDelta
    Accepts one of the following:
    const InputJSONDeltaInputJSONDelta InputJSONDelta = "input_json_delta"
    type BetaInputTokensClearAtLeast struct{…}
    Type InputTokens
    Accepts one of the following:
    const InputTokensInputTokens InputTokens = "input_tokens"
    Value int64
    type BetaInputTokensTrigger struct{…}
    Type InputTokens
    Accepts one of the following:
    const InputTokensInputTokens InputTokens = "input_tokens"
    Value int64
    type BetaJSONOutputFormat struct{…}
    Schema map[string, any]

    The JSON schema of the format

    Type JSONSchema
    Accepts one of the following:
    const JSONSchemaJSONSchema JSONSchema = "json_schema"
    type BetaMCPToolConfig struct{…}

    Configuration for a specific tool in an MCP toolset.

    DeferLoading booloptional
    Enabled booloptional
    type BetaMCPToolDefaultConfig struct{…}

    Default configuration for tools in an MCP toolset.

    DeferLoading booloptional
    Enabled booloptional
    type BetaMCPToolResultBlock struct{…}
    Content BetaMCPToolResultBlockContentUnion
    Accepts one of the following:
    string
    type BetaMCPToolResultBlockContentBetaMCPToolResultBlockContent []BetaTextBlock
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    IsError bool
    ToolUseID string
    Type MCPToolResult
    Accepts one of the following:
    const MCPToolResultMCPToolResult MCPToolResult = "mcp_tool_result"
    type BetaMCPToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string

    The name of the MCP tool

    ServerName string

    The name of the MCP server

    Type MCPToolUse
    Accepts one of the following:
    const MCPToolUseMCPToolUse MCPToolUse = "mcp_tool_use"
    type BetaMCPToolUseBlockParamResp struct{…}
    ID string
    Input map[string, any]
    Name string
    ServerName string

    The name of the MCP server

    Type MCPToolUse
    Accepts one of the following:
    const MCPToolUseMCPToolUse MCPToolUse = "mcp_tool_use"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaMCPToolset struct{…}

    Configuration for a group of tools from an MCP server.

    Allows configuring enabled status and defer_loading for all tools from an MCP server, with optional per-tool overrides.

    MCPServerName string

    Name of the MCP server to configure tools for

    maxLength255
    minLength1
    Type MCPToolset
    Accepts one of the following:
    const MCPToolsetMCPToolset MCPToolset = "mcp_toolset"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Configs map[string, BetaMCPToolConfig]optional

    Configuration overrides for specific tools, keyed by tool name

    DeferLoading booloptional
    Enabled booloptional
    DefaultConfig BetaMCPToolDefaultConfigoptional

    Default configuration applied to all tools from this server

    DeferLoading booloptional
    Enabled booloptional
    type BetaMemoryTool20250818 struct{…}
    Name Memory

    Name of the tool.

    This is how the tool will be called by the model and in tool_use blocks.

    Accepts one of the following:
    const MemoryMemory Memory = "memory"
    Type Memory20250818
    Accepts one of the following:
    const Memory20250818Memory20250818 Memory20250818 = "memory_20250818"
    AllowedCallers []stringoptional
    Accepts one of the following:
    const BetaMemoryTool20250818AllowedCallerDirect BetaMemoryTool20250818AllowedCaller = "direct"
    const BetaMemoryTool20250818AllowedCallerCodeExecution20250825 BetaMemoryTool20250818AllowedCaller = "code_execution_20250825"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    DeferLoading booloptional

    If true, tool will not be included in initial system prompt. Only loaded when returned via tool_reference from tool search.

    InputExamples []map[string, any]optional
    Strict booloptional
    type BetaMemoryTool20250818CommandUnion interface{…}
    Accepts one of the following:
    type BetaMemoryTool20250818ViewCommand struct{…}
    Command View

    Command type identifier

    Accepts one of the following:
    const ViewView View = "view"
    Path string

    Path to directory or file to view

    ViewRange []int64optional

    Optional line range for viewing specific lines

    type BetaMemoryTool20250818CreateCommand struct{…}
    Command Create

    Command type identifier

    Accepts one of the following:
    const CreateCreate Create = "create"
    FileText string

    Content to write to the file

    Path string

    Path where the file should be created

    type BetaMemoryTool20250818StrReplaceCommand struct{…}
    Command StrReplace

    Command type identifier

    Accepts one of the following:
    const StrReplaceStrReplace StrReplace = "str_replace"
    NewStr string

    Text to replace with

    OldStr string

    Text to search for and replace

    Path string

    Path to the file where text should be replaced

    type BetaMemoryTool20250818InsertCommand struct{…}
    Command Insert

    Command type identifier

    Accepts one of the following:
    const InsertInsert Insert = "insert"
    InsertLine int64

    Line number where text should be inserted

    minimum1
    InsertText string

    Text to insert at the specified line

    Path string

    Path to the file where text should be inserted

    type BetaMemoryTool20250818DeleteCommand struct{…}
    Command Delete

    Command type identifier

    Accepts one of the following:
    const DeleteDelete Delete = "delete"
    Path string

    Path to the file or directory to delete

    type BetaMemoryTool20250818RenameCommand struct{…}
    Command Rename

    Command type identifier

    Accepts one of the following:
    const RenameRename Rename = "rename"
    NewPath string

    New path for the file or directory

    OldPath string

    Current path of the file or directory

    type BetaMemoryTool20250818CreateCommand struct{…}
    Command Create

    Command type identifier

    Accepts one of the following:
    const CreateCreate Create = "create"
    FileText string

    Content to write to the file

    Path string

    Path where the file should be created

    type BetaMemoryTool20250818DeleteCommand struct{…}
    Command Delete

    Command type identifier

    Accepts one of the following:
    const DeleteDelete Delete = "delete"
    Path string

    Path to the file or directory to delete

    type BetaMemoryTool20250818InsertCommand struct{…}
    Command Insert

    Command type identifier

    Accepts one of the following:
    const InsertInsert Insert = "insert"
    InsertLine int64

    Line number where text should be inserted

    minimum1
    InsertText string

    Text to insert at the specified line

    Path string

    Path to the file where text should be inserted

    type BetaMemoryTool20250818RenameCommand struct{…}
    Command Rename

    Command type identifier

    Accepts one of the following:
    const RenameRename Rename = "rename"
    NewPath string

    New path for the file or directory

    OldPath string

    Current path of the file or directory

    type BetaMemoryTool20250818StrReplaceCommand struct{…}
    Command StrReplace

    Command type identifier

    Accepts one of the following:
    const StrReplaceStrReplace StrReplace = "str_replace"
    NewStr string

    Text to replace with

    OldStr string

    Text to search for and replace

    Path string

    Path to the file where text should be replaced

    type BetaMemoryTool20250818ViewCommand struct{…}
    Command View

    Command type identifier

    Accepts one of the following:
    const ViewView View = "view"
    Path string

    Path to directory or file to view

    ViewRange []int64optional

    Optional line range for viewing specific lines

    type BetaMessage struct{…}
    ID string

    Unique object identifier.

    The format and length of IDs may change over time.

    Container BetaContainer

    Information about the container used in the request (for the code execution tool)

    ID string

    Identifier for the container used in this request

    ExpiresAt Time

    The time at which the container will expire.

    formatdate-time
    Skills []BetaSkill

    Skills loaded in the container

    SkillID string

    Skill ID

    maxLength64
    minLength1
    Type BetaSkillType

    Type of skill - either 'anthropic' (built-in) or 'custom' (user-defined)

    Accepts one of the following:
    const BetaSkillTypeAnthropic BetaSkillType = "anthropic"
    const BetaSkillTypeCustom BetaSkillType = "custom"
    Version string

    Skill version or 'latest' for most recent version

    maxLength64
    minLength1
    Content []BetaContentBlockUnion

    Content generated by the model.

    This is an array of content blocks, each of which has a type that determines its shape.

    Example:

    [{"type": "text", "text": "Hi, I'm Claude."}]
    

    If the request input messages ended with an assistant turn, then the response content will continue directly from that last turn. You can use this to constrain the model's output.

    For example, if the input messages were:

    [
      {"role": "user", "content": "What's the Greek name for Sun? (A) Sol (B) Helios (C) Sun"},
      {"role": "assistant", "content": "The best answer is ("}
    ]
    

    Then the response content might be:

    [{"type": "text", "text": "B)"}]
    
    Accepts one of the following:
    type BetaTextBlock struct{…}
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaThinkingBlock struct{…}
    Signature string
    Thinking string
    Type Thinking
    Accepts one of the following:
    const ThinkingThinking Thinking = "thinking"
    type BetaRedactedThinkingBlock struct{…}
    Data string
    Type RedactedThinking
    Accepts one of the following:
    const RedactedThinkingRedactedThinking RedactedThinking = "redacted_thinking"
    type BetaToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string
    Type ToolUse
    Accepts one of the following:
    const ToolUseToolUse ToolUse = "tool_use"
    Caller BetaToolUseBlockCallerUnionoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaServerToolUseBlock struct{…}
    ID string
    Caller BetaServerToolUseBlockCallerUnion

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    Input map[string, any]
    Name BetaServerToolUseBlockName
    Accepts one of the following:
    const BetaServerToolUseBlockNameWebSearch BetaServerToolUseBlockName = "web_search"
    const BetaServerToolUseBlockNameWebFetch BetaServerToolUseBlockName = "web_fetch"
    const BetaServerToolUseBlockNameCodeExecution BetaServerToolUseBlockName = "code_execution"
    const BetaServerToolUseBlockNameBashCodeExecution BetaServerToolUseBlockName = "bash_code_execution"
    const BetaServerToolUseBlockNameTextEditorCodeExecution BetaServerToolUseBlockName = "text_editor_code_execution"
    const BetaServerToolUseBlockNameToolSearchToolRegex BetaServerToolUseBlockName = "tool_search_tool_regex"
    const BetaServerToolUseBlockNameToolSearchToolBm25 BetaServerToolUseBlockName = "tool_search_tool_bm25"
    Type ServerToolUse
    Accepts one of the following:
    const ServerToolUseServerToolUse ServerToolUse = "server_tool_use"
    type BetaWebSearchToolResultBlock struct{…}
    Content BetaWebSearchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebSearchToolResultError struct{…}
    ErrorCode BetaWebSearchToolResultErrorCode
    Accepts one of the following:
    const BetaWebSearchToolResultErrorCodeInvalidToolInput BetaWebSearchToolResultErrorCode = "invalid_tool_input"
    const BetaWebSearchToolResultErrorCodeUnavailable BetaWebSearchToolResultErrorCode = "unavailable"
    const BetaWebSearchToolResultErrorCodeMaxUsesExceeded BetaWebSearchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebSearchToolResultErrorCodeTooManyRequests BetaWebSearchToolResultErrorCode = "too_many_requests"
    const BetaWebSearchToolResultErrorCodeQueryTooLong BetaWebSearchToolResultErrorCode = "query_too_long"
    Type WebSearchToolResultError
    Accepts one of the following:
    const WebSearchToolResultErrorWebSearchToolResultError WebSearchToolResultError = "web_search_tool_result_error"
    type BetaWebSearchToolResultBlockContentArray []BetaWebSearchResultBlock
    EncryptedContent string
    PageAge string
    Title string
    Type WebSearchResult
    Accepts one of the following:
    const WebSearchResultWebSearchResult WebSearchResult = "web_search_result"
    URL string
    ToolUseID string
    Type WebSearchToolResult
    Accepts one of the following:
    const WebSearchToolResultWebSearchToolResult WebSearchToolResult = "web_search_tool_result"
    type BetaWebFetchToolResultBlock struct{…}
    Content BetaWebFetchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebFetchToolResultErrorBlock struct{…}
    ErrorCode BetaWebFetchToolResultErrorCode
    Accepts one of the following:
    const BetaWebFetchToolResultErrorCodeInvalidToolInput BetaWebFetchToolResultErrorCode = "invalid_tool_input"
    const BetaWebFetchToolResultErrorCodeURLTooLong BetaWebFetchToolResultErrorCode = "url_too_long"
    const BetaWebFetchToolResultErrorCodeURLNotAllowed BetaWebFetchToolResultErrorCode = "url_not_allowed"
    const BetaWebFetchToolResultErrorCodeURLNotAccessible BetaWebFetchToolResultErrorCode = "url_not_accessible"
    const BetaWebFetchToolResultErrorCodeUnsupportedContentType BetaWebFetchToolResultErrorCode = "unsupported_content_type"
    const BetaWebFetchToolResultErrorCodeTooManyRequests BetaWebFetchToolResultErrorCode = "too_many_requests"
    const BetaWebFetchToolResultErrorCodeMaxUsesExceeded BetaWebFetchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebFetchToolResultErrorCodeUnavailable BetaWebFetchToolResultErrorCode = "unavailable"
    Type WebFetchToolResultError
    Accepts one of the following:
    const WebFetchToolResultErrorWebFetchToolResultError WebFetchToolResultError = "web_fetch_tool_result_error"
    type BetaWebFetchBlock struct{…}
    Content BetaDocumentBlock
    Citations BetaCitationConfig

    Citation configuration for the document

    Enabled bool
    Source BetaDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    Title string

    The title of the document

    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    RetrievedAt string

    ISO 8601 timestamp when the content was retrieved

    Type WebFetchResult
    Accepts one of the following:
    const WebFetchResultWebFetchResult WebFetchResult = "web_fetch_result"
    URL string

    Fetched content URL

    ToolUseID string
    Type WebFetchToolResult
    Accepts one of the following:
    const WebFetchToolResultWebFetchToolResult WebFetchToolResult = "web_fetch_tool_result"
    type BetaCodeExecutionToolResultBlock struct{…}
    Content BetaCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaCodeExecutionToolResultError struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlock struct{…}
    Content []BetaCodeExecutionOutputBlock
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    ToolUseID string
    Type CodeExecutionToolResult
    Accepts one of the following:
    const CodeExecutionToolResultCodeExecutionToolResult CodeExecutionToolResult = "code_execution_tool_result"
    type BetaBashCodeExecutionToolResultBlock struct{…}
    Content BetaBashCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaBashCodeExecutionToolResultError struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionResultBlock struct{…}
    Content []BetaBashCodeExecutionOutputBlock
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    ToolUseID string
    Type BashCodeExecutionToolResult
    Accepts one of the following:
    const BashCodeExecutionToolResultBashCodeExecutionToolResult BashCodeExecutionToolResult = "bash_code_execution_tool_result"
    type BetaTextEditorCodeExecutionToolResultBlock struct{…}
    Content BetaTextEditorCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaTextEditorCodeExecutionToolResultError struct{…}
    ErrorCode BetaTextEditorCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaTextEditorCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeUnavailable BetaTextEditorCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaTextEditorCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaTextEditorCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeFileNotFound BetaTextEditorCodeExecutionToolResultErrorErrorCode = "file_not_found"
    ErrorMessage string
    Type TextEditorCodeExecutionToolResultError
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultErrorTextEditorCodeExecutionToolResultError TextEditorCodeExecutionToolResultError = "text_editor_code_execution_tool_result_error"
    type BetaTextEditorCodeExecutionViewResultBlock struct{…}
    Content string
    FileType BetaTextEditorCodeExecutionViewResultBlockFileType
    Accepts one of the following:
    const BetaTextEditorCodeExecutionViewResultBlockFileTypeText BetaTextEditorCodeExecutionViewResultBlockFileType = "text"
    const BetaTextEditorCodeExecutionViewResultBlockFileTypeImage BetaTextEditorCodeExecutionViewResultBlockFileType = "image"
    const BetaTextEditorCodeExecutionViewResultBlockFileTypePDF BetaTextEditorCodeExecutionViewResultBlockFileType = "pdf"
    NumLines int64
    StartLine int64
    TotalLines int64
    Type TextEditorCodeExecutionViewResult
    Accepts one of the following:
    const TextEditorCodeExecutionViewResultTextEditorCodeExecutionViewResult TextEditorCodeExecutionViewResult = "text_editor_code_execution_view_result"
    type BetaTextEditorCodeExecutionCreateResultBlock struct{…}
    IsFileUpdate bool
    Type TextEditorCodeExecutionCreateResult
    Accepts one of the following:
    const TextEditorCodeExecutionCreateResultTextEditorCodeExecutionCreateResult TextEditorCodeExecutionCreateResult = "text_editor_code_execution_create_result"
    type BetaTextEditorCodeExecutionStrReplaceResultBlock struct{…}
    Lines []string
    NewLines int64
    NewStart int64
    OldLines int64
    OldStart int64
    Type TextEditorCodeExecutionStrReplaceResult
    Accepts one of the following:
    const TextEditorCodeExecutionStrReplaceResultTextEditorCodeExecutionStrReplaceResult TextEditorCodeExecutionStrReplaceResult = "text_editor_code_execution_str_replace_result"
    ToolUseID string
    Type TextEditorCodeExecutionToolResult
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultTextEditorCodeExecutionToolResult TextEditorCodeExecutionToolResult = "text_editor_code_execution_tool_result"
    type BetaToolSearchToolResultBlock struct{…}
    Content BetaToolSearchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaToolSearchToolResultError struct{…}
    ErrorCode BetaToolSearchToolResultErrorErrorCode
    Accepts one of the following:
    const BetaToolSearchToolResultErrorErrorCodeInvalidToolInput BetaToolSearchToolResultErrorErrorCode = "invalid_tool_input"
    const BetaToolSearchToolResultErrorErrorCodeUnavailable BetaToolSearchToolResultErrorErrorCode = "unavailable"
    const BetaToolSearchToolResultErrorErrorCodeTooManyRequests BetaToolSearchToolResultErrorErrorCode = "too_many_requests"
    const BetaToolSearchToolResultErrorErrorCodeExecutionTimeExceeded BetaToolSearchToolResultErrorErrorCode = "execution_time_exceeded"
    ErrorMessage string
    Type ToolSearchToolResultError
    Accepts one of the following:
    const ToolSearchToolResultErrorToolSearchToolResultError ToolSearchToolResultError = "tool_search_tool_result_error"
    type BetaToolSearchToolSearchResultBlock struct{…}
    ToolReferences []BetaToolReferenceBlock
    ToolName string
    Type ToolReference
    Accepts one of the following:
    const ToolReferenceToolReference ToolReference = "tool_reference"
    Type ToolSearchToolSearchResult
    Accepts one of the following:
    const ToolSearchToolSearchResultToolSearchToolSearchResult ToolSearchToolSearchResult = "tool_search_tool_search_result"
    ToolUseID string
    Type ToolSearchToolResult
    Accepts one of the following:
    const ToolSearchToolResultToolSearchToolResult ToolSearchToolResult = "tool_search_tool_result"
    type BetaMCPToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string

    The name of the MCP tool

    ServerName string

    The name of the MCP server

    Type MCPToolUse
    Accepts one of the following:
    const MCPToolUseMCPToolUse MCPToolUse = "mcp_tool_use"
    type BetaMCPToolResultBlock struct{…}
    Content BetaMCPToolResultBlockContentUnion
    Accepts one of the following:
    string
    type BetaMCPToolResultBlockContentBetaMCPToolResultBlockContent []BetaTextBlock
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    IsError bool
    ToolUseID string
    Type MCPToolResult
    Accepts one of the following:
    const MCPToolResultMCPToolResult MCPToolResult = "mcp_tool_result"
    type BetaContainerUploadBlock struct{…}

    Response model for a file uploaded to the container.

    FileID string
    Type ContainerUpload
    Accepts one of the following:
    const ContainerUploadContainerUpload ContainerUpload = "container_upload"
    ContextManagement BetaContextManagementResponse

    Context management response.

    Information about context management strategies applied during the request.

    AppliedEdits []BetaContextManagementResponseAppliedEditUnion

    List of context management edits that were applied.

    Accepts one of the following:
    type BetaClearToolUses20250919EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedToolUses int64

    Number of tool uses that were cleared.

    minimum0
    Type ClearToolUses20250919

    The type of context management edit applied.

    Accepts one of the following:
    const ClearToolUses20250919ClearToolUses20250919 ClearToolUses20250919 = "clear_tool_uses_20250919"
    type BetaClearThinking20251015EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedThinkingTurns int64

    Number of thinking turns that were cleared.

    minimum0
    Type ClearThinking20251015

    The type of context management edit applied.

    Accepts one of the following:
    const ClearThinking20251015ClearThinking20251015 ClearThinking20251015 = "clear_thinking_20251015"
    Model Model

    The model that will complete your prompt.

    See models for additional details and options.

    Accepts one of the following:
    type Model string

    The model that will complete your prompt.

    See models for additional details and options.

    Accepts one of the following:
    const ModelClaudeOpus4_5_20251101 Model = "claude-opus-4-5-20251101"

    Premium model combining maximum intelligence with practical performance

    const ModelClaudeOpus4_5 Model = "claude-opus-4-5"

    Premium model combining maximum intelligence with practical performance

    const ModelClaude3_7SonnetLatest Model = "claude-3-7-sonnet-latest"

    High-performance model with early extended thinking

    const ModelClaude3_7Sonnet20250219 Model = "claude-3-7-sonnet-20250219"

    High-performance model with early extended thinking

    const ModelClaude3_5HaikuLatest Model = "claude-3-5-haiku-latest"

    Fastest and most compact model for near-instant responsiveness

    const ModelClaude3_5Haiku20241022 Model = "claude-3-5-haiku-20241022"

    Our fastest model

    const ModelClaudeHaiku4_5 Model = "claude-haiku-4-5"

    Hybrid model, capable of near-instant responses and extended thinking

    const ModelClaudeHaiku4_5_20251001 Model = "claude-haiku-4-5-20251001"

    Hybrid model, capable of near-instant responses and extended thinking

    const ModelClaudeSonnet4_20250514 Model = "claude-sonnet-4-20250514"

    High-performance model with extended thinking

    const ModelClaudeSonnet4_0 Model = "claude-sonnet-4-0"

    High-performance model with extended thinking

    const ModelClaude4Sonnet20250514 Model = "claude-4-sonnet-20250514"

    High-performance model with extended thinking

    const ModelClaudeSonnet4_5 Model = "claude-sonnet-4-5"

    Our best model for real-world agents and coding

    const ModelClaudeSonnet4_5_20250929 Model = "claude-sonnet-4-5-20250929"

    Our best model for real-world agents and coding

    const ModelClaudeOpus4_0 Model = "claude-opus-4-0"

    Our most capable model

    const ModelClaudeOpus4_20250514 Model = "claude-opus-4-20250514"

    Our most capable model

    const ModelClaude4Opus20250514 Model = "claude-4-opus-20250514"

    Our most capable model

    const ModelClaudeOpus4_1_20250805 Model = "claude-opus-4-1-20250805"

    Our most capable model

    const ModelClaude3OpusLatest Model = "claude-3-opus-latest"

    Excels at writing and complex tasks

    const ModelClaude_3_Opus_20240229 Model = "claude-3-opus-20240229"

    Excels at writing and complex tasks

    const ModelClaude_3_Haiku_20240307 Model = "claude-3-haiku-20240307"

    Our previous most fast and cost-effective

    string
    Role Assistant

    Conversational role of the generated message.

    This will always be "assistant".

    Accepts one of the following:
    const AssistantAssistant Assistant = "assistant"
    StopReason BetaStopReason

    The reason that we stopped.

    This may be one the following values:

    • "end_turn": the model reached a natural stopping point
    • "max_tokens": we exceeded the requested max_tokens or the model's maximum
    • "stop_sequence": one of your provided custom stop_sequences was generated
    • "tool_use": the model invoked one or more tools
    • "pause_turn": we paused a long-running turn. You may provide the response back as-is in a subsequent request to let the model continue.
    • "refusal": when streaming classifiers intervene to handle potential policy violations

    In non-streaming mode this value is always non-null. In streaming mode, it is null in the message_start event and non-null otherwise.

    Accepts one of the following:
    const BetaStopReasonEndTurn BetaStopReason = "end_turn"
    const BetaStopReasonMaxTokens BetaStopReason = "max_tokens"
    const BetaStopReasonStopSequence BetaStopReason = "stop_sequence"
    const BetaStopReasonToolUse BetaStopReason = "tool_use"
    const BetaStopReasonPauseTurn BetaStopReason = "pause_turn"
    const BetaStopReasonRefusal BetaStopReason = "refusal"
    const BetaStopReasonModelContextWindowExceeded BetaStopReason = "model_context_window_exceeded"
    StopSequence string

    Which custom stop sequence was generated, if any.

    This value will be a non-null string if one of your custom stop sequences was generated.

    Type Message

    Object type.

    For Messages, this is always "message".

    Accepts one of the following:
    const MessageMessage Message = "message"
    Usage BetaUsage

    Billing and rate-limit usage.

    Anthropic's API bills and rate-limits by token counts, as tokens represent the underlying cost to our systems.

    Under the hood, the API transforms requests into a format suitable for the model. The model's output then goes through a parsing stage before becoming an API response. As a result, the token counts in usage will not match one-to-one with the exact visible content of an API request or response.

    For example, output_tokens will be non-zero, even for an empty string response from Claude.

    Total input tokens in a request is the summation of input_tokens, cache_creation_input_tokens, and cache_read_input_tokens.

    CacheCreation BetaCacheCreation

    Breakdown of cached tokens by TTL

    Ephemeral1hInputTokens int64

    The number of input tokens used to create the 1 hour cache entry.

    minimum0
    Ephemeral5mInputTokens int64

    The number of input tokens used to create the 5 minute cache entry.

    minimum0
    CacheCreationInputTokens int64

    The number of input tokens used to create the cache entry.

    minimum0
    CacheReadInputTokens int64

    The number of input tokens read from the cache.

    minimum0
    InputTokens int64

    The number of input tokens which were used.

    minimum0
    OutputTokens int64

    The number of output tokens which were used.

    minimum0
    ServerToolUse BetaServerToolUsage

    The number of server tool requests.

    WebFetchRequests int64

    The number of web fetch tool requests.

    minimum0
    WebSearchRequests int64

    The number of web search tool requests.

    minimum0
    ServiceTier BetaUsageServiceTier

    If the request used the priority, standard, or batch tier.

    Accepts one of the following:
    const BetaUsageServiceTierStandard BetaUsageServiceTier = "standard"
    const BetaUsageServiceTierPriority BetaUsageServiceTier = "priority"
    const BetaUsageServiceTierBatch BetaUsageServiceTier = "batch"
    type BetaMessageDeltaUsage struct{…}
    CacheCreationInputTokens int64

    The cumulative number of input tokens used to create the cache entry.

    minimum0
    CacheReadInputTokens int64

    The cumulative number of input tokens read from the cache.

    minimum0
    InputTokens int64

    The cumulative number of input tokens which were used.

    minimum0
    OutputTokens int64

    The cumulative number of output tokens which were used.

    ServerToolUse BetaServerToolUsage

    The number of server tool requests.

    WebFetchRequests int64

    The number of web fetch tool requests.

    minimum0
    WebSearchRequests int64

    The number of web search tool requests.

    minimum0
    type BetaMessageParamResp struct{…}
    Content []BetaContentBlockParamUnionResp
    Accepts one of the following:
    []BetaContentBlockParamUnionResp
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaRequestDocumentBlock struct{…}
    Source BetaRequestDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaContentBlockSource struct{…}
    Content BetaContentBlockSourceContentUnion
    Accepts one of the following:
    string
    []BetaContentBlockSourceContentUnion
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type Content
    Accepts one of the following:
    const ContentContent Content = "content"
    type BetaURLPDFSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileDocumentSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    Context stringoptional
    Title stringoptional
    type BetaSearchResultBlockParamResp struct{…}
    Content []BetaTextBlockParamResp
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Source string
    Title string
    Type SearchResult
    Accepts one of the following:
    const SearchResultSearchResult SearchResult = "search_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    type BetaThinkingBlockParamResp struct{…}
    Signature string
    Thinking string
    Type Thinking
    Accepts one of the following:
    const ThinkingThinking Thinking = "thinking"
    type BetaRedactedThinkingBlockParamResp struct{…}
    Data string
    Type RedactedThinking
    Accepts one of the following:
    const RedactedThinkingRedactedThinking RedactedThinking = "redacted_thinking"
    type BetaToolUseBlockParamResp struct{…}
    ID string
    Input map[string, any]
    Name string
    Type ToolUse
    Accepts one of the following:
    const ToolUseToolUse ToolUse = "tool_use"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Caller BetaToolUseBlockParamCallerUnionRespoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaToolResultBlockParamResp struct{…}
    ToolUseID string
    Type ToolResult
    Accepts one of the following:
    const ToolResultToolResult ToolResult = "tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Content []BetaToolResultBlockParamContentUnionRespoptional
    Accepts one of the following:
    []BetaToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaSearchResultBlockParamResp struct{…}
    Content []BetaTextBlockParamResp
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Source string
    Title string
    Type SearchResult
    Accepts one of the following:
    const SearchResultSearchResult SearchResult = "search_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    type BetaRequestDocumentBlock struct{…}
    Source BetaRequestDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaContentBlockSource struct{…}
    Content BetaContentBlockSourceContentUnion
    Accepts one of the following:
    string
    []BetaContentBlockSourceContentUnion
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type Content
    Accepts one of the following:
    const ContentContent Content = "content"
    type BetaURLPDFSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileDocumentSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    Context stringoptional
    Title stringoptional
    type BetaToolReferenceBlockParamResp struct{…}

    Tool reference block that can be included in tool_result content.

    ToolName string
    Type ToolReference
    Accepts one of the following:
    const ToolReferenceToolReference ToolReference = "tool_reference"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    IsError booloptional
    type BetaServerToolUseBlockParamResp struct{…}
    ID string
    Input map[string, any]
    Name BetaServerToolUseBlockParamName
    Accepts one of the following:
    const BetaServerToolUseBlockParamNameWebSearch BetaServerToolUseBlockParamName = "web_search"
    const BetaServerToolUseBlockParamNameWebFetch BetaServerToolUseBlockParamName = "web_fetch"
    const BetaServerToolUseBlockParamNameCodeExecution BetaServerToolUseBlockParamName = "code_execution"
    const BetaServerToolUseBlockParamNameBashCodeExecution BetaServerToolUseBlockParamName = "bash_code_execution"
    const BetaServerToolUseBlockParamNameTextEditorCodeExecution BetaServerToolUseBlockParamName = "text_editor_code_execution"
    const BetaServerToolUseBlockParamNameToolSearchToolRegex BetaServerToolUseBlockParamName = "tool_search_tool_regex"
    const BetaServerToolUseBlockParamNameToolSearchToolBm25 BetaServerToolUseBlockParamName = "tool_search_tool_bm25"
    Type ServerToolUse
    Accepts one of the following:
    const ServerToolUseServerToolUse ServerToolUse = "server_tool_use"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Caller BetaServerToolUseBlockParamCallerUnionRespoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaWebSearchToolResultBlockParamResp struct{…}
    Content BetaWebSearchToolResultBlockParamContentUnionResp
    Accepts one of the following:
    []BetaWebSearchResultBlockParamResp
    EncryptedContent string
    Title string
    Type WebSearchResult
    Accepts one of the following:
    const WebSearchResultWebSearchResult WebSearchResult = "web_search_result"
    URL string
    PageAge stringoptional
    type BetaWebSearchToolRequestError struct{…}
    ErrorCode BetaWebSearchToolResultErrorCode
    Accepts one of the following:
    const BetaWebSearchToolResultErrorCodeInvalidToolInput BetaWebSearchToolResultErrorCode = "invalid_tool_input"
    const BetaWebSearchToolResultErrorCodeUnavailable BetaWebSearchToolResultErrorCode = "unavailable"
    const BetaWebSearchToolResultErrorCodeMaxUsesExceeded BetaWebSearchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebSearchToolResultErrorCodeTooManyRequests BetaWebSearchToolResultErrorCode = "too_many_requests"
    const BetaWebSearchToolResultErrorCodeQueryTooLong BetaWebSearchToolResultErrorCode = "query_too_long"
    Type WebSearchToolResultError
    Accepts one of the following:
    const WebSearchToolResultErrorWebSearchToolResultError WebSearchToolResultError = "web_search_tool_result_error"
    ToolUseID string
    Type WebSearchToolResult
    Accepts one of the following:
    const WebSearchToolResultWebSearchToolResult WebSearchToolResult = "web_search_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaWebFetchToolResultBlockParamResp struct{…}
    Content BetaWebFetchToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaWebFetchToolResultErrorBlockParamResp struct{…}
    ErrorCode BetaWebFetchToolResultErrorCode
    Accepts one of the following:
    const BetaWebFetchToolResultErrorCodeInvalidToolInput BetaWebFetchToolResultErrorCode = "invalid_tool_input"
    const BetaWebFetchToolResultErrorCodeURLTooLong BetaWebFetchToolResultErrorCode = "url_too_long"
    const BetaWebFetchToolResultErrorCodeURLNotAllowed BetaWebFetchToolResultErrorCode = "url_not_allowed"
    const BetaWebFetchToolResultErrorCodeURLNotAccessible BetaWebFetchToolResultErrorCode = "url_not_accessible"
    const BetaWebFetchToolResultErrorCodeUnsupportedContentType BetaWebFetchToolResultErrorCode = "unsupported_content_type"
    const BetaWebFetchToolResultErrorCodeTooManyRequests BetaWebFetchToolResultErrorCode = "too_many_requests"
    const BetaWebFetchToolResultErrorCodeMaxUsesExceeded BetaWebFetchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebFetchToolResultErrorCodeUnavailable BetaWebFetchToolResultErrorCode = "unavailable"
    Type WebFetchToolResultError
    Accepts one of the following:
    const WebFetchToolResultErrorWebFetchToolResultError WebFetchToolResultError = "web_fetch_tool_result_error"
    type BetaWebFetchBlockParamResp struct{…}
    Content BetaRequestDocumentBlock
    Source BetaRequestDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaContentBlockSource struct{…}
    Content BetaContentBlockSourceContentUnion
    Accepts one of the following:
    string
    []BetaContentBlockSourceContentUnion
    Accepts one of the following:
    type BetaTextBlockParamResp struct{…}
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    type BetaImageBlockParamResp struct{…}
    Source BetaImageBlockParamSourceUnionResp
    Accepts one of the following:
    type BetaBase64ImageSource struct{…}
    Data string
    MediaType BetaBase64ImageSourceMediaType
    Accepts one of the following:
    const BetaBase64ImageSourceMediaTypeImageJPEG BetaBase64ImageSourceMediaType = "image/jpeg"
    const BetaBase64ImageSourceMediaTypeImagePNG BetaBase64ImageSourceMediaType = "image/png"
    const BetaBase64ImageSourceMediaTypeImageGIF BetaBase64ImageSourceMediaType = "image/gif"
    const BetaBase64ImageSourceMediaTypeImageWebP BetaBase64ImageSourceMediaType = "image/webp"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaURLImageSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileImageSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Image
    Accepts one of the following:
    const ImageImage Image = "image"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type Content
    Accepts one of the following:
    const ContentContent Content = "content"
    type BetaURLPDFSource struct{…}
    Type URL
    Accepts one of the following:
    const URLURL URL = "url"
    URL string
    type BetaFileDocumentSource struct{…}
    FileID string
    Type File
    Accepts one of the following:
    const FileFile File = "file"
    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations BetaCitationsConfigParamRespoptional
    Enabled booloptional
    Context stringoptional
    Title stringoptional
    Type WebFetchResult
    Accepts one of the following:
    const WebFetchResultWebFetchResult WebFetchResult = "web_fetch_result"
    URL string

    Fetched content URL

    RetrievedAt stringoptional

    ISO 8601 timestamp when the content was retrieved

    ToolUseID string
    Type WebFetchToolResult
    Accepts one of the following:
    const WebFetchToolResultWebFetchToolResult WebFetchToolResult = "web_fetch_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlockParamResp struct{…}
    Content []BetaCodeExecutionOutputBlockParamResp
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    ToolUseID string
    Type CodeExecutionToolResult
    Accepts one of the following:
    const CodeExecutionToolResultCodeExecutionToolResult CodeExecutionToolResult = "code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaBashCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaBashCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaBashCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorParamErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorParamErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorParamErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorParamErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorParamErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionResultBlockParamResp struct{…}
    Content []BetaBashCodeExecutionOutputBlockParamResp
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    ToolUseID string
    Type BashCodeExecutionToolResult
    Accepts one of the following:
    const BashCodeExecutionToolResultBashCodeExecutionToolResult BashCodeExecutionToolResult = "bash_code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaTextEditorCodeExecutionToolResultBlockParamResp struct{…}
    Content BetaTextEditorCodeExecutionToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaTextEditorCodeExecutionToolResultErrorParamResp struct{…}
    ErrorCode BetaTextEditorCodeExecutionToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeInvalidToolInput BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeUnavailable BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "unavailable"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeTooManyRequests BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "too_many_requests"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeExecutionTimeExceeded BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "execution_time_exceeded"
    const BetaTextEditorCodeExecutionToolResultErrorParamErrorCodeFileNotFound BetaTextEditorCodeExecutionToolResultErrorParamErrorCode = "file_not_found"
    Type TextEditorCodeExecutionToolResultError
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultErrorTextEditorCodeExecutionToolResultError TextEditorCodeExecutionToolResultError = "text_editor_code_execution_tool_result_error"
    ErrorMessage stringoptional
    type BetaTextEditorCodeExecutionViewResultBlockParamResp struct{…}
    Content string
    FileType BetaTextEditorCodeExecutionViewResultBlockParamFileType
    Accepts one of the following:
    const BetaTextEditorCodeExecutionViewResultBlockParamFileTypeText BetaTextEditorCodeExecutionViewResultBlockParamFileType = "text"
    const BetaTextEditorCodeExecutionViewResultBlockParamFileTypeImage BetaTextEditorCodeExecutionViewResultBlockParamFileType = "image"
    const BetaTextEditorCodeExecutionViewResultBlockParamFileTypePDF BetaTextEditorCodeExecutionViewResultBlockParamFileType = "pdf"
    Type TextEditorCodeExecutionViewResult
    Accepts one of the following:
    const TextEditorCodeExecutionViewResultTextEditorCodeExecutionViewResult TextEditorCodeExecutionViewResult = "text_editor_code_execution_view_result"
    NumLines int64optional
    StartLine int64optional
    TotalLines int64optional
    type BetaTextEditorCodeExecutionCreateResultBlockParamResp struct{…}
    IsFileUpdate bool
    Type TextEditorCodeExecutionCreateResult
    Accepts one of the following:
    const TextEditorCodeExecutionCreateResultTextEditorCodeExecutionCreateResult TextEditorCodeExecutionCreateResult = "text_editor_code_execution_create_result"
    type BetaTextEditorCodeExecutionStrReplaceResultBlockParamResp struct{…}
    Type TextEditorCodeExecutionStrReplaceResult
    Accepts one of the following:
    const TextEditorCodeExecutionStrReplaceResultTextEditorCodeExecutionStrReplaceResult TextEditorCodeExecutionStrReplaceResult = "text_editor_code_execution_str_replace_result"
    Lines []stringoptional
    NewLines int64optional
    NewStart int64optional
    OldLines int64optional
    OldStart int64optional
    ToolUseID string
    Type TextEditorCodeExecutionToolResult
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultTextEditorCodeExecutionToolResult TextEditorCodeExecutionToolResult = "text_editor_code_execution_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaToolSearchToolResultBlockParamResp struct{…}
    Content BetaToolSearchToolResultBlockParamContentUnionResp
    Accepts one of the following:
    type BetaToolSearchToolResultErrorParamResp struct{…}
    ErrorCode BetaToolSearchToolResultErrorParamErrorCode
    Accepts one of the following:
    const BetaToolSearchToolResultErrorParamErrorCodeInvalidToolInput BetaToolSearchToolResultErrorParamErrorCode = "invalid_tool_input"
    const BetaToolSearchToolResultErrorParamErrorCodeUnavailable BetaToolSearchToolResultErrorParamErrorCode = "unavailable"
    const BetaToolSearchToolResultErrorParamErrorCodeTooManyRequests BetaToolSearchToolResultErrorParamErrorCode = "too_many_requests"
    const BetaToolSearchToolResultErrorParamErrorCodeExecutionTimeExceeded BetaToolSearchToolResultErrorParamErrorCode = "execution_time_exceeded"
    Type ToolSearchToolResultError
    Accepts one of the following:
    const ToolSearchToolResultErrorToolSearchToolResultError ToolSearchToolResultError = "tool_search_tool_result_error"
    type BetaToolSearchToolSearchResultBlockParamResp struct{…}
    ToolReferences []BetaToolReferenceBlockParamResp
    ToolName string
    Type ToolReference
    Accepts one of the following:
    const ToolReferenceToolReference ToolReference = "tool_reference"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Type ToolSearchToolSearchResult
    Accepts one of the following:
    const ToolSearchToolSearchResultToolSearchToolSearchResult ToolSearchToolSearchResult = "tool_search_tool_search_result"
    ToolUseID string
    Type ToolSearchToolResult
    Accepts one of the following:
    const ToolSearchToolResultToolSearchToolResult ToolSearchToolResult = "tool_search_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaMCPToolUseBlockParamResp struct{…}
    ID string
    Input map[string, any]
    Name string
    ServerName string

    The name of the MCP server

    Type MCPToolUse
    Accepts one of the following:
    const MCPToolUseMCPToolUse MCPToolUse = "mcp_tool_use"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    type BetaRequestMCPToolResultBlockParamResp struct{…}
    ToolUseID string
    Type MCPToolResult
    Accepts one of the following:
    const MCPToolResultMCPToolResult MCPToolResult = "mcp_tool_result"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Content BetaRequestMCPToolResultBlockParamContentUnionRespoptional
    Accepts one of the following:
    string
    []BetaTextBlockParamResp
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Citations []BetaTextCitationParamUnionRespoptional
    Accepts one of the following:
    type BetaCitationCharLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocationParamResp struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationWebSearchResultLocationParamResp struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocationParamResp struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    IsError booloptional
    type BetaContainerUploadBlockParamResp struct{…}

    A content block that represents a file to be uploaded to the container Files uploaded via this block will be available in the container's input directory.

    FileID string
    Type ContainerUpload
    Accepts one of the following:
    const ContainerUploadContainerUpload ContainerUpload = "container_upload"
    CacheControl BetaCacheControlEphemeraloptional

    Create a cache control breakpoint at this content block.

    Type Ephemeral
    Accepts one of the following:
    const EphemeralEphemeral Ephemeral = "ephemeral"
    TTL BetaCacheControlEphemeralTTLoptional

    The time-to-live for the cache control breakpoint.

    This may be one the following values:

    • 5m: 5 minutes
    • 1h: 1 hour

    Defaults to 5m.

    Accepts one of the following:
    const BetaCacheControlEphemeralTTLTTL5m BetaCacheControlEphemeralTTL = "5m"
    const BetaCacheControlEphemeralTTLTTL1h BetaCacheControlEphemeralTTL = "1h"
    Role BetaMessageParamRole
    Accepts one of the following:
    const BetaMessageParamRoleUser BetaMessageParamRole = "user"
    const BetaMessageParamRoleAssistant BetaMessageParamRole = "assistant"
    type BetaMessageTokensCount struct{…}
    ContextManagement BetaCountTokensContextManagementResponse

    Information about context management applied to the message.

    OriginalInputTokens int64

    The original token count before context management was applied

    InputTokens int64

    The total number of tokens across the provided list of messages, system prompt, and tools.

    type BetaMetadata struct{…}
    UserID stringoptional

    An external identifier for the user who is associated with the request.

    This should be a uuid, hash value, or other opaque identifier. Anthropic may use this id to help detect abuse. Do not include any identifying information such as name, email address, or phone number.

    maxLength256
    type BetaOutputConfig struct{…}
    Effort BetaOutputConfigEffortoptional

    All possible effort levels.

    Accepts one of the following:
    const BetaOutputConfigEffortLow BetaOutputConfigEffort = "low"
    const BetaOutputConfigEffortMedium BetaOutputConfigEffort = "medium"
    const BetaOutputConfigEffortHigh BetaOutputConfigEffort = "high"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaRawContentBlockDeltaUnion interface{…}
    Accepts one of the following:
    type BetaTextDelta struct{…}
    Text string
    Type TextDelta
    Accepts one of the following:
    const TextDeltaTextDelta TextDelta = "text_delta"
    type BetaInputJSONDelta struct{…}
    PartialJSON string
    Type InputJSONDelta
    Accepts one of the following:
    const InputJSONDeltaInputJSONDelta InputJSONDelta = "input_json_delta"
    type BetaCitationsDelta struct{…}
    Citation BetaCitationsDeltaCitationUnion
    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Type CitationsDelta
    Accepts one of the following:
    const CitationsDeltaCitationsDelta CitationsDelta = "citations_delta"
    type BetaThinkingDelta struct{…}
    Thinking string
    Type ThinkingDelta
    Accepts one of the following:
    const ThinkingDeltaThinkingDelta ThinkingDelta = "thinking_delta"
    type BetaSignatureDelta struct{…}
    Signature string
    Type SignatureDelta
    Accepts one of the following:
    const SignatureDeltaSignatureDelta SignatureDelta = "signature_delta"
    type BetaRawContentBlockDeltaEvent struct{…}
    Delta BetaRawContentBlockDeltaUnion
    Accepts one of the following:
    type BetaTextDelta struct{…}
    Text string
    Type TextDelta
    Accepts one of the following:
    const TextDeltaTextDelta TextDelta = "text_delta"
    type BetaInputJSONDelta struct{…}
    PartialJSON string
    Type InputJSONDelta
    Accepts one of the following:
    const InputJSONDeltaInputJSONDelta InputJSONDelta = "input_json_delta"
    type BetaCitationsDelta struct{…}
    Citation BetaCitationsDeltaCitationUnion
    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Type CitationsDelta
    Accepts one of the following:
    const CitationsDeltaCitationsDelta CitationsDelta = "citations_delta"
    type BetaThinkingDelta struct{…}
    Thinking string
    Type ThinkingDelta
    Accepts one of the following:
    const ThinkingDeltaThinkingDelta ThinkingDelta = "thinking_delta"
    type BetaSignatureDelta struct{…}
    Signature string
    Type SignatureDelta
    Accepts one of the following:
    const SignatureDeltaSignatureDelta SignatureDelta = "signature_delta"
    Index int64
    Type ContentBlockDelta
    Accepts one of the following:
    const ContentBlockDeltaContentBlockDelta ContentBlockDelta = "content_block_delta"
    type BetaRawContentBlockStartEvent struct{…}
    ContentBlock BetaRawContentBlockStartEventContentBlockUnion

    Response model for a file uploaded to the container.

    Accepts one of the following:
    type BetaTextBlock struct{…}
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaThinkingBlock struct{…}
    Signature string
    Thinking string
    Type Thinking
    Accepts one of the following:
    const ThinkingThinking Thinking = "thinking"
    type BetaRedactedThinkingBlock struct{…}
    Data string
    Type RedactedThinking
    Accepts one of the following:
    const RedactedThinkingRedactedThinking RedactedThinking = "redacted_thinking"
    type BetaToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string
    Type ToolUse
    Accepts one of the following:
    const ToolUseToolUse ToolUse = "tool_use"
    Caller BetaToolUseBlockCallerUnionoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaServerToolUseBlock struct{…}
    ID string
    Caller BetaServerToolUseBlockCallerUnion

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    Input map[string, any]
    Name BetaServerToolUseBlockName
    Accepts one of the following:
    const BetaServerToolUseBlockNameWebSearch BetaServerToolUseBlockName = "web_search"
    const BetaServerToolUseBlockNameWebFetch BetaServerToolUseBlockName = "web_fetch"
    const BetaServerToolUseBlockNameCodeExecution BetaServerToolUseBlockName = "code_execution"
    const BetaServerToolUseBlockNameBashCodeExecution BetaServerToolUseBlockName = "bash_code_execution"
    const BetaServerToolUseBlockNameTextEditorCodeExecution BetaServerToolUseBlockName = "text_editor_code_execution"
    const BetaServerToolUseBlockNameToolSearchToolRegex BetaServerToolUseBlockName = "tool_search_tool_regex"
    const BetaServerToolUseBlockNameToolSearchToolBm25 BetaServerToolUseBlockName = "tool_search_tool_bm25"
    Type ServerToolUse
    Accepts one of the following:
    const ServerToolUseServerToolUse ServerToolUse = "server_tool_use"
    type BetaWebSearchToolResultBlock struct{…}
    Content BetaWebSearchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebSearchToolResultError struct{…}
    ErrorCode BetaWebSearchToolResultErrorCode
    Accepts one of the following:
    const BetaWebSearchToolResultErrorCodeInvalidToolInput BetaWebSearchToolResultErrorCode = "invalid_tool_input"
    const BetaWebSearchToolResultErrorCodeUnavailable BetaWebSearchToolResultErrorCode = "unavailable"
    const BetaWebSearchToolResultErrorCodeMaxUsesExceeded BetaWebSearchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebSearchToolResultErrorCodeTooManyRequests BetaWebSearchToolResultErrorCode = "too_many_requests"
    const BetaWebSearchToolResultErrorCodeQueryTooLong BetaWebSearchToolResultErrorCode = "query_too_long"
    Type WebSearchToolResultError
    Accepts one of the following:
    const WebSearchToolResultErrorWebSearchToolResultError WebSearchToolResultError = "web_search_tool_result_error"
    type BetaWebSearchToolResultBlockContentArray []BetaWebSearchResultBlock
    EncryptedContent string
    PageAge string
    Title string
    Type WebSearchResult
    Accepts one of the following:
    const WebSearchResultWebSearchResult WebSearchResult = "web_search_result"
    URL string
    ToolUseID string
    Type WebSearchToolResult
    Accepts one of the following:
    const WebSearchToolResultWebSearchToolResult WebSearchToolResult = "web_search_tool_result"
    type BetaWebFetchToolResultBlock struct{…}
    Content BetaWebFetchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebFetchToolResultErrorBlock struct{…}
    ErrorCode BetaWebFetchToolResultErrorCode
    Accepts one of the following:
    const BetaWebFetchToolResultErrorCodeInvalidToolInput BetaWebFetchToolResultErrorCode = "invalid_tool_input"
    const BetaWebFetchToolResultErrorCodeURLTooLong BetaWebFetchToolResultErrorCode = "url_too_long"
    const BetaWebFetchToolResultErrorCodeURLNotAllowed BetaWebFetchToolResultErrorCode = "url_not_allowed"
    const BetaWebFetchToolResultErrorCodeURLNotAccessible BetaWebFetchToolResultErrorCode = "url_not_accessible"
    const BetaWebFetchToolResultErrorCodeUnsupportedContentType BetaWebFetchToolResultErrorCode = "unsupported_content_type"
    const BetaWebFetchToolResultErrorCodeTooManyRequests BetaWebFetchToolResultErrorCode = "too_many_requests"
    const BetaWebFetchToolResultErrorCodeMaxUsesExceeded BetaWebFetchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebFetchToolResultErrorCodeUnavailable BetaWebFetchToolResultErrorCode = "unavailable"
    Type WebFetchToolResultError
    Accepts one of the following:
    const WebFetchToolResultErrorWebFetchToolResultError WebFetchToolResultError = "web_fetch_tool_result_error"
    type BetaWebFetchBlock struct{…}
    Content BetaDocumentBlock
    Citations BetaCitationConfig

    Citation configuration for the document

    Enabled bool
    Source BetaDocumentBlockSourceUnion
    Accepts one of the following:
    type BetaBase64PDFSource struct{…}
    Data string
    MediaType ApplicationPDF
    Accepts one of the following:
    const ApplicationPDFApplicationPDF ApplicationPDF = "application/pdf"
    Type Base64
    Accepts one of the following:
    const Base64Base64 Base64 = "base64"
    type BetaPlainTextSource struct{…}
    Data string
    MediaType TextPlain
    Accepts one of the following:
    const TextPlainTextPlain TextPlain = "text/plain"
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    Title string

    The title of the document

    Type Document
    Accepts one of the following:
    const DocumentDocument Document = "document"
    RetrievedAt string

    ISO 8601 timestamp when the content was retrieved

    Type WebFetchResult
    Accepts one of the following:
    const WebFetchResultWebFetchResult WebFetchResult = "web_fetch_result"
    URL string

    Fetched content URL

    ToolUseID string
    Type WebFetchToolResult
    Accepts one of the following:
    const WebFetchToolResultWebFetchToolResult WebFetchToolResult = "web_fetch_tool_result"
    type BetaCodeExecutionToolResultBlock struct{…}
    Content BetaCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaCodeExecutionToolResultError struct{…}
    ErrorCode BetaCodeExecutionToolResultErrorCode
    Accepts one of the following:
    const BetaCodeExecutionToolResultErrorCodeInvalidToolInput BetaCodeExecutionToolResultErrorCode = "invalid_tool_input"
    const BetaCodeExecutionToolResultErrorCodeUnavailable BetaCodeExecutionToolResultErrorCode = "unavailable"
    const BetaCodeExecutionToolResultErrorCodeTooManyRequests BetaCodeExecutionToolResultErrorCode = "too_many_requests"
    const BetaCodeExecutionToolResultErrorCodeExecutionTimeExceeded BetaCodeExecutionToolResultErrorCode = "execution_time_exceeded"
    Type CodeExecutionToolResultError
    Accepts one of the following:
    const CodeExecutionToolResultErrorCodeExecutionToolResultError CodeExecutionToolResultError = "code_execution_tool_result_error"
    type BetaCodeExecutionResultBlock struct{…}
    Content []BetaCodeExecutionOutputBlock
    FileID string
    Type CodeExecutionOutput
    Accepts one of the following:
    const CodeExecutionOutputCodeExecutionOutput CodeExecutionOutput = "code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type CodeExecutionResult
    Accepts one of the following:
    const CodeExecutionResultCodeExecutionResult CodeExecutionResult = "code_execution_result"
    ToolUseID string
    Type CodeExecutionToolResult
    Accepts one of the following:
    const CodeExecutionToolResultCodeExecutionToolResult CodeExecutionToolResult = "code_execution_tool_result"
    type BetaBashCodeExecutionToolResultBlock struct{…}
    Content BetaBashCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaBashCodeExecutionToolResultError struct{…}
    ErrorCode BetaBashCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaBashCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaBashCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaBashCodeExecutionToolResultErrorErrorCodeUnavailable BetaBashCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaBashCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaBashCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaBashCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaBashCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaBashCodeExecutionToolResultErrorErrorCodeOutputFileTooLarge BetaBashCodeExecutionToolResultErrorErrorCode = "output_file_too_large"
    Type BashCodeExecutionToolResultError
    Accepts one of the following:
    const BashCodeExecutionToolResultErrorBashCodeExecutionToolResultError BashCodeExecutionToolResultError = "bash_code_execution_tool_result_error"
    type BetaBashCodeExecutionResultBlock struct{…}
    Content []BetaBashCodeExecutionOutputBlock
    FileID string
    Type BashCodeExecutionOutput
    Accepts one of the following:
    const BashCodeExecutionOutputBashCodeExecutionOutput BashCodeExecutionOutput = "bash_code_execution_output"
    ReturnCode int64
    Stderr string
    Stdout string
    Type BashCodeExecutionResult
    Accepts one of the following:
    const BashCodeExecutionResultBashCodeExecutionResult BashCodeExecutionResult = "bash_code_execution_result"
    ToolUseID string
    Type BashCodeExecutionToolResult
    Accepts one of the following:
    const BashCodeExecutionToolResultBashCodeExecutionToolResult BashCodeExecutionToolResult = "bash_code_execution_tool_result"
    type BetaTextEditorCodeExecutionToolResultBlock struct{…}
    Content BetaTextEditorCodeExecutionToolResultBlockContentUnion
    Accepts one of the following:
    type BetaTextEditorCodeExecutionToolResultError struct{…}
    ErrorCode BetaTextEditorCodeExecutionToolResultErrorErrorCode
    Accepts one of the following:
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeInvalidToolInput BetaTextEditorCodeExecutionToolResultErrorErrorCode = "invalid_tool_input"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeUnavailable BetaTextEditorCodeExecutionToolResultErrorErrorCode = "unavailable"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeTooManyRequests BetaTextEditorCodeExecutionToolResultErrorErrorCode = "too_many_requests"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeExecutionTimeExceeded BetaTextEditorCodeExecutionToolResultErrorErrorCode = "execution_time_exceeded"
    const BetaTextEditorCodeExecutionToolResultErrorErrorCodeFileNotFound BetaTextEditorCodeExecutionToolResultErrorErrorCode = "file_not_found"
    ErrorMessage string
    Type TextEditorCodeExecutionToolResultError
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultErrorTextEditorCodeExecutionToolResultError TextEditorCodeExecutionToolResultError = "text_editor_code_execution_tool_result_error"
    type BetaTextEditorCodeExecutionViewResultBlock struct{…}
    Content string
    FileType BetaTextEditorCodeExecutionViewResultBlockFileType
    Accepts one of the following:
    const BetaTextEditorCodeExecutionViewResultBlockFileTypeText BetaTextEditorCodeExecutionViewResultBlockFileType = "text"
    const BetaTextEditorCodeExecutionViewResultBlockFileTypeImage BetaTextEditorCodeExecutionViewResultBlockFileType = "image"
    const BetaTextEditorCodeExecutionViewResultBlockFileTypePDF BetaTextEditorCodeExecutionViewResultBlockFileType = "pdf"
    NumLines int64
    StartLine int64
    TotalLines int64
    Type TextEditorCodeExecutionViewResult
    Accepts one of the following:
    const TextEditorCodeExecutionViewResultTextEditorCodeExecutionViewResult TextEditorCodeExecutionViewResult = "text_editor_code_execution_view_result"
    type BetaTextEditorCodeExecutionCreateResultBlock struct{…}
    IsFileUpdate bool
    Type TextEditorCodeExecutionCreateResult
    Accepts one of the following:
    const TextEditorCodeExecutionCreateResultTextEditorCodeExecutionCreateResult TextEditorCodeExecutionCreateResult = "text_editor_code_execution_create_result"
    type BetaTextEditorCodeExecutionStrReplaceResultBlock struct{…}
    Lines []string
    NewLines int64
    NewStart int64
    OldLines int64
    OldStart int64
    Type TextEditorCodeExecutionStrReplaceResult
    Accepts one of the following:
    const TextEditorCodeExecutionStrReplaceResultTextEditorCodeExecutionStrReplaceResult TextEditorCodeExecutionStrReplaceResult = "text_editor_code_execution_str_replace_result"
    ToolUseID string
    Type TextEditorCodeExecutionToolResult
    Accepts one of the following:
    const TextEditorCodeExecutionToolResultTextEditorCodeExecutionToolResult TextEditorCodeExecutionToolResult = "text_editor_code_execution_tool_result"
    type BetaToolSearchToolResultBlock struct{…}
    Content BetaToolSearchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaToolSearchToolResultError struct{…}
    ErrorCode BetaToolSearchToolResultErrorErrorCode
    Accepts one of the following:
    const BetaToolSearchToolResultErrorErrorCodeInvalidToolInput BetaToolSearchToolResultErrorErrorCode = "invalid_tool_input"
    const BetaToolSearchToolResultErrorErrorCodeUnavailable BetaToolSearchToolResultErrorErrorCode = "unavailable"
    const BetaToolSearchToolResultErrorErrorCodeTooManyRequests BetaToolSearchToolResultErrorErrorCode = "too_many_requests"
    const BetaToolSearchToolResultErrorErrorCodeExecutionTimeExceeded BetaToolSearchToolResultErrorErrorCode = "execution_time_exceeded"
    ErrorMessage string
    Type ToolSearchToolResultError
    Accepts one of the following:
    const ToolSearchToolResultErrorToolSearchToolResultError ToolSearchToolResultError = "tool_search_tool_result_error"
    type BetaToolSearchToolSearchResultBlock struct{…}
    ToolReferences []BetaToolReferenceBlock
    ToolName string
    Type ToolReference
    Accepts one of the following:
    const ToolReferenceToolReference ToolReference = "tool_reference"
    Type ToolSearchToolSearchResult
    Accepts one of the following:
    const ToolSearchToolSearchResultToolSearchToolSearchResult ToolSearchToolSearchResult = "tool_search_tool_search_result"
    ToolUseID string
    Type ToolSearchToolResult
    Accepts one of the following:
    const ToolSearchToolResultToolSearchToolResult ToolSearchToolResult = "tool_search_tool_result"
    type BetaMCPToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string

    The name of the MCP tool

    ServerName string

    The name of the MCP server

    Type MCPToolUse
    Accepts one of the following:
    const MCPToolUseMCPToolUse MCPToolUse = "mcp_tool_use"
    type BetaMCPToolResultBlock struct{…}
    Content BetaMCPToolResultBlockContentUnion
    Accepts one of the following:
    string
    type BetaMCPToolResultBlockContentBetaMCPToolResultBlockContent []BetaTextBlock
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    IsError bool
    ToolUseID string
    Type MCPToolResult
    Accepts one of the following:
    const MCPToolResultMCPToolResult MCPToolResult = "mcp_tool_result"
    type BetaContainerUploadBlock struct{…}

    Response model for a file uploaded to the container.

    FileID string
    Type ContainerUpload
    Accepts one of the following:
    const ContainerUploadContainerUpload ContainerUpload = "container_upload"
    Index int64
    Type ContentBlockStart
    Accepts one of the following:
    const ContentBlockStartContentBlockStart ContentBlockStart = "content_block_start"
    type BetaRawContentBlockStopEvent struct{…}
    Index int64
    Type ContentBlockStop
    Accepts one of the following:
    const ContentBlockStopContentBlockStop ContentBlockStop = "content_block_stop"
    type BetaRawMessageDeltaEvent struct{…}
    ContextManagement BetaContextManagementResponse

    Information about context management strategies applied during the request

    AppliedEdits []BetaContextManagementResponseAppliedEditUnion

    List of context management edits that were applied.

    Accepts one of the following:
    type BetaClearToolUses20250919EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedToolUses int64

    Number of tool uses that were cleared.

    minimum0
    Type ClearToolUses20250919

    The type of context management edit applied.

    Accepts one of the following:
    const ClearToolUses20250919ClearToolUses20250919 ClearToolUses20250919 = "clear_tool_uses_20250919"
    type BetaClearThinking20251015EditResponse struct{…}
    ClearedInputTokens int64

    Number of input tokens cleared by this edit.

    minimum0
    ClearedThinkingTurns int64

    Number of thinking turns that were cleared.

    minimum0
    Type ClearThinking20251015

    The type of context management edit applied.

    Accepts one of the following:
    const ClearThinking20251015ClearThinking20251015 ClearThinking20251015 = "clear_thinking_20251015"
    Delta BetaRawMessageDeltaEventDelta
    Container BetaContainer

    Information about the container used in the request (for the code execution tool)

    ID string

    Identifier for the container used in this request

    ExpiresAt Time

    The time at which the container will expire.

    formatdate-time
    Skills []BetaSkill

    Skills loaded in the container

    SkillID string

    Skill ID

    maxLength64
    minLength1
    Type BetaSkillType

    Type of skill - either 'anthropic' (built-in) or 'custom' (user-defined)

    Accepts one of the following:
    const BetaSkillTypeAnthropic BetaSkillType = "anthropic"
    const BetaSkillTypeCustom BetaSkillType = "custom"
    Version string

    Skill version or 'latest' for most recent version

    maxLength64
    minLength1
    StopReason BetaStopReason
    Accepts one of the following:
    const BetaStopReasonEndTurn BetaStopReason = "end_turn"
    const BetaStopReasonMaxTokens BetaStopReason = "max_tokens"
    const BetaStopReasonStopSequence BetaStopReason = "stop_sequence"
    const BetaStopReasonToolUse BetaStopReason = "tool_use"
    const BetaStopReasonPauseTurn BetaStopReason = "pause_turn"
    const BetaStopReasonRefusal BetaStopReason = "refusal"
    const BetaStopReasonModelContextWindowExceeded BetaStopReason = "model_context_window_exceeded"
    StopSequence string
    Type MessageDelta
    Accepts one of the following:
    const MessageDeltaMessageDelta MessageDelta = "message_delta"
    Usage BetaMessageDeltaUsage

    Billing and rate-limit usage.

    Anthropic's API bills and rate-limits by token counts, as tokens represent the underlying cost to our systems.

    Under the hood, the API transforms requests into a format suitable for the model. The model's output then goes through a parsing stage before becoming an API response. As a result, the token counts in usage will not match one-to-one with the exact visible content of an API request or response.

    For example, output_tokens will be non-zero, even for an empty string response from Claude.

    Total input tokens in a request is the summation of input_tokens, cache_creation_input_tokens, and cache_read_input_tokens.

    CacheCreationInputTokens int64

    The cumulative number of input tokens used to create the cache entry.

    minimum0
    CacheReadInputTokens int64

    The cumulative number of input tokens read from the cache.

    minimum0
    InputTokens int64

    The cumulative number of input tokens which were used.

    minimum0
    OutputTokens int64

    The cumulative number of output tokens which were used.

    ServerToolUse BetaServerToolUsage

    The number of server tool requests.

    WebFetchRequests int64

    The number of web fetch tool requests.

    minimum0
    WebSearchRequests int64

    The number of web search tool requests.

    minimum0
    type BetaRawMessageStartEvent struct{…}
    Message BetaMessage
    ID string

    Unique object identifier.

    The format and length of IDs may change over time.

    Container BetaContainer

    Information about the container used in the request (for the code execution tool)

    ID string

    Identifier for the container used in this request

    ExpiresAt Time

    The time at which the container will expire.

    formatdate-time
    Skills []BetaSkill

    Skills loaded in the container

    SkillID string

    Skill ID

    maxLength64
    minLength1
    Type BetaSkillType

    Type of skill - either 'anthropic' (built-in) or 'custom' (user-defined)

    Accepts one of the following:
    const BetaSkillTypeAnthropic BetaSkillType = "anthropic"
    const BetaSkillTypeCustom BetaSkillType = "custom"
    Version string

    Skill version or 'latest' for most recent version

    maxLength64
    minLength1
    Content []BetaContentBlockUnion

    Content generated by the model.

    This is an array of content blocks, each of which has a type that determines its shape.

    Example:

    [{"type": "text", "text": "Hi, I'm Claude."}]
    

    If the request input messages ended with an assistant turn, then the response content will continue directly from that last turn. You can use this to constrain the model's output.

    For example, if the input messages were:

    [
      {"role": "user", "content": "What's the Greek name for Sun? (A) Sol (B) Helios (C) Sun"},
      {"role": "assistant", "content": "The best answer is ("}
    ]
    

    Then the response content might be:

    [{"type": "text", "text": "B)"}]
    
    Accepts one of the following:
    type BetaTextBlock struct{…}
    Citations []BetaTextCitationUnion

    Citations supporting the text block.

    The type of citation returned will depend on the type of document being cited. Citing a PDF results in page_location, plain text results in char_location, and content document results in content_block_location.

    Accepts one of the following:
    type BetaCitationCharLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndCharIndex int64
    FileID string
    StartCharIndex int64
    Type CharLocation
    Accepts one of the following:
    const CharLocationCharLocation CharLocation = "char_location"
    type BetaCitationPageLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndPageNumber int64
    FileID string
    StartPageNumber int64
    Type PageLocation
    Accepts one of the following:
    const PageLocationPageLocation PageLocation = "page_location"
    type BetaCitationContentBlockLocation struct{…}
    CitedText string
    DocumentIndex int64
    DocumentTitle string
    EndBlockIndex int64
    FileID string
    StartBlockIndex int64
    Type ContentBlockLocation
    Accepts one of the following:
    const ContentBlockLocationContentBlockLocation ContentBlockLocation = "content_block_location"
    type BetaCitationsWebSearchResultLocation struct{…}
    CitedText string
    EncryptedIndex string
    Title string
    Type WebSearchResultLocation
    Accepts one of the following:
    const WebSearchResultLocationWebSearchResultLocation WebSearchResultLocation = "web_search_result_location"
    URL string
    type BetaCitationSearchResultLocation struct{…}
    CitedText string
    EndBlockIndex int64
    SearchResultIndex int64
    Source string
    StartBlockIndex int64
    Title string
    Type SearchResultLocation
    Accepts one of the following:
    const SearchResultLocationSearchResultLocation SearchResultLocation = "search_result_location"
    Text string
    Type Text
    Accepts one of the following:
    const TextText Text = "text"
    type BetaThinkingBlock struct{…}
    Signature string
    Thinking string
    Type Thinking
    Accepts one of the following:
    const ThinkingThinking Thinking = "thinking"
    type BetaRedactedThinkingBlock struct{…}
    Data string
    Type RedactedThinking
    Accepts one of the following:
    const RedactedThinkingRedactedThinking RedactedThinking = "redacted_thinking"
    type BetaToolUseBlock struct{…}
    ID string
    Input map[string, any]
    Name string
    Type ToolUse
    Accepts one of the following:
    const ToolUseToolUse ToolUse = "tool_use"
    Caller BetaToolUseBlockCallerUnionoptional

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    type BetaServerToolUseBlock struct{…}
    ID string
    Caller BetaServerToolUseBlockCallerUnion

    Tool invocation directly from the model.

    Accepts one of the following:
    type BetaDirectCaller struct{…}

    Tool invocation directly from the model.

    Type Direct
    Accepts one of the following:
    const DirectDirect Direct = "direct"
    type BetaServerToolCaller struct{…}

    Tool invocation generated by a server-side tool.

    ToolID string
    Type CodeExecution20250825
    Accepts one of the following:
    const CodeExecution20250825CodeExecution20250825 CodeExecution20250825 = "code_execution_20250825"
    Input map[string, any]
    Name BetaServerToolUseBlockName
    Accepts one of the following:
    const BetaServerToolUseBlockNameWebSearch BetaServerToolUseBlockName = "web_search"
    const BetaServerToolUseBlockNameWebFetch BetaServerToolUseBlockName = "web_fetch"
    const BetaServerToolUseBlockNameCodeExecution BetaServerToolUseBlockName = "code_execution"
    const BetaServerToolUseBlockNameBashCodeExecution BetaServerToolUseBlockName = "bash_code_execution"
    const BetaServerToolUseBlockNameTextEditorCodeExecution BetaServerToolUseBlockName = "text_editor_code_execution"
    const BetaServerToolUseBlockNameToolSearchToolRegex BetaServerToolUseBlockName = "tool_search_tool_regex"
    const BetaServerToolUseBlockNameToolSearchToolBm25 BetaServerToolUseBlockName = "tool_search_tool_bm25"
    Type ServerToolUse
    Accepts one of the following:
    const ServerToolUseServerToolUse ServerToolUse = "server_tool_use"
    type BetaWebSearchToolResultBlock struct{…}
    Content BetaWebSearchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebSearchToolResultError struct{…}
    ErrorCode BetaWebSearchToolResultErrorCode
    Accepts one of the following:
    const BetaWebSearchToolResultErrorCodeInvalidToolInput BetaWebSearchToolResultErrorCode = "invalid_tool_input"
    const BetaWebSearchToolResultErrorCodeUnavailable BetaWebSearchToolResultErrorCode = "unavailable"
    const BetaWebSearchToolResultErrorCodeMaxUsesExceeded BetaWebSearchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebSearchToolResultErrorCodeTooManyRequests BetaWebSearchToolResultErrorCode = "too_many_requests"
    const BetaWebSearchToolResultErrorCodeQueryTooLong BetaWebSearchToolResultErrorCode = "query_too_long"
    Type WebSearchToolResultError
    Accepts one of the following:
    const WebSearchToolResultErrorWebSearchToolResultError WebSearchToolResultError = "web_search_tool_result_error"
    type BetaWebSearchToolResultBlockContentArray []BetaWebSearchResultBlock
    EncryptedContent string
    PageAge string
    Title string
    Type WebSearchResult
    Accepts one of the following:
    const WebSearchResultWebSearchResult WebSearchResult = "web_search_result"
    URL string
    ToolUseID string
    Type WebSearchToolResult
    Accepts one of the following:
    const WebSearchToolResultWebSearchToolResult WebSearchToolResult = "web_search_tool_result"
    type BetaWebFetchToolResultBlock struct{…}
    Content BetaWebFetchToolResultBlockContentUnion
    Accepts one of the following:
    type BetaWebFetchToolResultErrorBlock struct{…}
    ErrorCode BetaWebFetchToolResultErrorCode
    Accepts one of the following:
    const BetaWebFetchToolResultErrorCodeInvalidToolInput BetaWebFetchToolResultErrorCode = "invalid_tool_input"
    const BetaWebFetchToolResultErrorCodeURLTooLong BetaWebFetchToolResultErrorCode = "url_too_long"
    const BetaWebFetchToolResultErrorCodeURLNotAllowed BetaWebFetchToolResultErrorCode = "url_not_allowed"
    const BetaWebFetchToolResultErrorCodeURLNotAccessible BetaWebFetchToolResultErrorCode = "url_not_accessible"
    const BetaWebFetchToolResultErrorCodeUnsupportedContentType BetaWebFetchToolResultErrorCode = "unsupported_content_type"
    const BetaWebFetchToolResultErrorCodeTooManyRequests BetaWebFetchToolResultErrorCode = "too_many_requests"
    const BetaWebFetchToolResultErrorCodeMaxUsesExceeded BetaWebFetchToolResultErrorCode = "max_uses_exceeded"
    const BetaWebFetchToolResultErrorCodeUnavailable