Get File Metadata

client.Beta.Files.GetMetadata(ctx, fileID, query) (*BetaFileMetadata, error)

GET/v1/files/{file_id}

Get File Metadata

Parameters

fileID string

ID of the File.

query BetaFileGetMetadataParams

Betas param.Field[[]AnthropicBeta] Optional

Optional header to specify the beta version(s) you want to use.

string

type AnthropicBeta string

One of the following:

const AnthropicBetaMessageBatches2024_09_24 AnthropicBeta = "message-batches-2024-09-24"

const AnthropicBetaPromptCaching2024_07_31 AnthropicBeta = "prompt-caching-2024-07-31"

const AnthropicBetaComputerUse2024_10_22 AnthropicBeta = "computer-use-2024-10-22"

const AnthropicBetaComputerUse2025_01_24 AnthropicBeta = "computer-use-2025-01-24"

const AnthropicBetaPDFs2024_09_25 AnthropicBeta = "pdfs-2024-09-25"

const AnthropicBetaTokenCounting2024_11_01 AnthropicBeta = "token-counting-2024-11-01"

const AnthropicBetaTokenEfficientTools2025_02_19 AnthropicBeta = "token-efficient-tools-2025-02-19"

const AnthropicBetaOutput128k2025_02_19 AnthropicBeta = "output-128k-2025-02-19"

const AnthropicBetaFilesAPI2025_04_14 AnthropicBeta = "files-api-2025-04-14"

const AnthropicBetaMCPClient2025_04_04 AnthropicBeta = "mcp-client-2025-04-04"

const AnthropicBetaMCPClient2025_11_20 AnthropicBeta = "mcp-client-2025-11-20"

const AnthropicBetaDevFullThinking2025_05_14 AnthropicBeta = "dev-full-thinking-2025-05-14"

const AnthropicBetaInterleavedThinking2025_05_14 AnthropicBeta = "interleaved-thinking-2025-05-14"

const AnthropicBetaCodeExecution2025_05_22 AnthropicBeta = "code-execution-2025-05-22"

const AnthropicBetaExtendedCacheTTL2025_04_11 AnthropicBeta = "extended-cache-ttl-2025-04-11"

const AnthropicBetaContext1m2025_08_07 AnthropicBeta = "context-1m-2025-08-07"

const AnthropicBetaContextManagement2025_06_27 AnthropicBeta = "context-management-2025-06-27"

const AnthropicBetaModelContextWindowExceeded2025_08_26 AnthropicBeta = "model-context-window-exceeded-2025-08-26"

const AnthropicBetaSkills2025_10_02 AnthropicBeta = "skills-2025-10-02"

const AnthropicBetaFastMode2026_02_01 AnthropicBeta = "fast-mode-2026-02-01"

const AnthropicBetaOutput300k2026_03_24 AnthropicBeta = "output-300k-2026-03-24"

const AnthropicBetaUserProfiles2026_03_24 AnthropicBeta = "user-profiles-2026-03-24"

const AnthropicBetaUserProfiles2026_08_18 AnthropicBeta = "user-profiles-2026-08-18"

const AnthropicBetaAdvisorTool2026_03_01 AnthropicBeta = "advisor-tool-2026-03-01"

const AnthropicBetaManagedAgents2026_04_01 AnthropicBeta = "managed-agents-2026-04-01"

const AnthropicBetaCacheDiagnosis2026_04_07 AnthropicBeta = "cache-diagnosis-2026-04-07"

const AnthropicBetaDreaming2026_04_21 AnthropicBeta = "dreaming-2026-04-21"

const AnthropicBetaThinkingTokenCount2026_05_13 AnthropicBeta = "thinking-token-count-2026-05-13"

const AnthropicBetaServerSideFallback2026_06_01 AnthropicBeta = "server-side-fallback-2026-06-01"

const AnthropicBetaServerSideFallback2026_07_01 AnthropicBeta = "server-side-fallback-2026-07-01"

const AnthropicBetaFallbackCredit2026_06_01 AnthropicBeta = "fallback-credit-2026-06-01"

const AnthropicBetaFallbackCredit2026_07_01 AnthropicBeta = "fallback-credit-2026-07-01"

const AnthropicBetaAgentMemory2026_07_22 AnthropicBeta = "agent-memory-2026-07-22"

const AnthropicBetaMidConversationToolChanges2026_07_01 AnthropicBeta = "mid-conversation-tool-changes-2026-07-01"

const AnthropicBetaCompact2026_01_12 AnthropicBeta = "compact-2026-01-12"

const AnthropicBetaComputerUse2025_11_24 AnthropicBeta = "computer-use-2025-11-24"

const AnthropicBetaMCPTunnels2026_06_22 AnthropicBeta = "mcp-tunnels-2026-06-22"

const AnthropicBetaStructuredOutputs2025_11_13 AnthropicBeta = "structured-outputs-2025-11-13"

const AnthropicBetaTaskBudgets2026_03_13 AnthropicBeta = "task-budgets-2026-03-13"

const AnthropicBetaThinkingDisplayUpdates2026_08_18 AnthropicBeta = "thinking-display-updates-2026-08-18"

const AnthropicBetaCEUserManagement2026_07_13 AnthropicBeta = "ce-user-management-2026-07-13"

Returns

type BetaFileMetadata struct{…}

ID string

Unique object identifier.

The format and length of IDs may change over time.

CreatedAt Time

RFC 3339 datetime string representing when the file was created.

formatdate-time

Filename string

Original filename of the uploaded file.

maxLength500

minLength1

MimeType string

MIME type of the file.

maxLength255

minLength1

SizeBytes int64

Size of the file in bytes.

minimum0

Type File

Object type.

For files, this is always "file".

Downloadable bool Optional

Whether the file can be downloaded.

defaultfalse

ExpiresAt Time Optional

RFC 3339 datetime string representing when the file will expire and become unavailable for download. Null if the file does not expire. For files uploaded with expires_in_seconds, this is the upload time plus that value.

formatdate-time

Scope BetaFileScope Optional

The scope of this file, indicating the context in which it was created (e.g., a session).

ID string

The ID of the scoping resource (e.g., the session ID).

Type Session

The type of scope (e.g., "session").

Get File Metadata

package main

import (
	"context"
	"fmt"

	"github.com/anthropics/anthropic-sdk-go"
	"github.com/anthropics/anthropic-sdk-go/option"
)

func main() {
	client := anthropic.NewClient(
		option.WithAPIKey("my-anthropic-api-key"),
	)
	betaFileMetadata, err := client.Beta.Files.GetMetadata(
		context.TODO(),
		"file_id",
		anthropic.BetaFileGetMetadataParams{},
	)
	if err != nil {
		panic(err.Error())
	}
	fmt.Printf("%+v\n", betaFileMetadata.ID)
}

{
  "id": "file_011CNha8iCJcU1wXNR6q4V8w",
  "created_at": "2025-04-15T18:37:24.100435Z",
  "filename": "document.pdf",
  "mime_type": "application/pdf",
  "size_bytes": 102400,
  "type": "file",
  "downloadable": false,
  "expires_at": "2025-05-15T18:37:24.100435Z",
  "scope": {
    "id": "id",
    "type": "session"
  }
}

Returns Examples

{
  "id": "file_011CNha8iCJcU1wXNR6q4V8w",
  "created_at": "2025-04-15T18:37:24.100435Z",
  "filename": "document.pdf",
  "mime_type": "application/pdf",
  "size_bytes": 102400,
  "type": "file",
  "downloadable": false,
  "expires_at": "2025-05-15T18:37:24.100435Z",
  "scope": {
    "id": "id",
    "type": "session"
  }
}