--- title: Memory Versions url: https://platform.claude.com/docs/en/api/java/beta/memory_stores/memory_versions --- # Memory Versions ## List memory versions `MemoryVersionListPage beta().memoryStores().memoryVersions().list(params = MemoryVersionListParams.none(), requestOptions = RequestOptions.none())` **GET** `/v1/memory_stores/{memory_store_id}/memory_versions` List memory versions ### Parameters - `MemoryVersionListParams params` - `Optional memoryStoreId` (path parameter) The ID of the memory store whose version history to list (`memstore_...`). - `Optional apiKeyId` (query parameter) Return only versions written with the API key that has this ID. - `Optional createdAtGte` (query parameter) Return versions created at or after this time (inclusive). format: date-time - `Optional createdAtLte` (query parameter) Return versions created at or before this time (inclusive). format: date-time - `Optional limit` (query parameter) The maximum number of versions to return per page. Defaults to 20. format: int32 - `Optional memoryId` (query parameter) Return only versions of the memory with this ID (`mem_...`). The filter still works after the memory is deleted. The results then include the version whose `operation` is `deleted`. - `Optional operation` (query parameter) Return only versions that record this kind of change. - `Optional page` (query parameter) The `next_page` value from a previous response, to get the next page. Omit it to get the first page. - `Optional serviceAccountId` (query parameter) Return only versions written by the service account with this ID (`svac_...`). - `Optional sessionId` (query parameter) Return only versions written by the session with this ID. - `Optional view` (query parameter) Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20. - `Optional> betas` (header parameter) This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")` - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")` - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")` - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")` - `PDFS_2024_09_25("pdfs-2024-09-25")` - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")` - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")` - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")` - `FILES_API_2025_04_14("files-api-2025-04-14")` - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")` - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")` - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")` - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")` - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")` - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")` - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")` - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")` - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")` - `SKILLS_2025_10_02("skills-2025-10-02")` - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")` - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")` - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")` - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")` - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")` - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")` - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")` - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")` - `DREAMING_2026_04_21("dreaming-2026-04-21")` - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")` - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")` - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")` - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")` - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")` - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")` - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")` - `COMPACT_2026_01_12("compact-2026-01-12")` - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")` - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")` - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")` - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")` - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")` - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")` - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")` - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")` - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")` - `COMPACT_2026_09_04("compact-2026-09-04")` - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")` - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")` - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")` - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")` - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")` - `Optional workspaceId` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `class BetaManagedAgentsMemoryVersion` A `memory_version` object: one immutable, attributed row in a memory's append-only history. Every non-no-op mutation to a memory produces a new version. Versions belong to the store (not the individual memory) and are not deleted with the memory; each version is retained for at least the version retention period after it was written, unless the store itself is deleted. Retrieving a redacted version returns 200 with `content`, `path`, `content_size_bytes`, and `content_sha256` set to `null`; branch on `redacted_at`, not HTTP status. - `Type type` - `String id` Unique identifier for this version (a `memver_...` value). - `LocalDateTime createdAt` When this version was written, in RFC 3339 format. format: date-time - `String memoryId` ID of the memory this version snapshots (a `mem_...` value). Remains valid after the memory is deleted; pass it as `memory_id` to [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=java) to retrieve the memory's retained versions, including the `deleted` row while the lineage is retained. - `String memoryStoreId` ID of the memory store this version belongs to (a `memstore_...` value). - `BetaManagedAgentsMemoryVersionOperation operation` The kind of mutation this version records: `created`, `modified`, or `deleted`. - `CREATED("created")` The memory was created. The first version in any memory's lineage. - `MODIFIED("modified")` The memory's `content`, `path`, or both were changed via update. Writes the agent makes through the filesystem mount also appear as `modified`. - `DELETED("deleted")` The memory was deleted. The `content`, `content_size_bytes`, and `content_sha256` fields are `null` on this version. The preceding version, while it is retained, records the deleted content's size and hash. - `Optional content` The memory's UTF-8 text content as of this version. `null` when `view=basic`, when `operation` is `deleted`, or when `redacted_at` is set. - `Optional contentSha256` Lowercase hex SHA-256 digest of `content` as of this version (64 characters). `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. - `Optional contentSizeBytes` Size of `content` in bytes as of this version. `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. format: int32 - `Optional createdBy` Who performed this write: one of `session_actor`, `api_actor`, `user_actor`, or `service_account_actor`; `null` when no writer is recorded. Captured at write time and preserved through redaction. A `session_actor` is an agent writing through the store's mounted filesystem at `/mnt/memory/`. The API key that created that session is not recorded on agent writes, so attribution names who made the write, not who is ultimately responsible; look up session provenance via the [Sessions API](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java). - `class BetaManagedAgentsSessionActor` An agent acting during a session, for example through the session's mounted filesystem. It names the session itself, not the user or API key that started the session. - `Type type` - `String sessionId` ID of the session (a `sesn_...` value). Look up the session via [Retrieve a session](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java) for further provenance. minLength: 1 - `class BetaManagedAgentsApiActor` A direct caller of the public API, identified by the API key that authenticated the request. - `Type type` - `String apiKeyId` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `class BetaManagedAgentsUserActor` A human user, for example acting through the Anthropic Console. - `Type type` - `String userId` ID of the user (a `user_...` value). minLength: 1 - `class BetaManagedAgentsServiceAccountActor` A workload authenticated as a service account, for example via Workload Identity Federation. - `JsonValue type = "service_account_actor"` - `String serviceAccountId` ID of the service account (a `svac_...` value). minLength: 1 - `Optional path` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `Optional redactedAt` When this version was redacted, in RFC 3339 format, or `null` if it has not been redacted. When set, `content`, `path`, `content_size_bytes`, and `content_sha256` are all `null`. See [Redact a memory version](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/redact?sdk_languages=java). format: date-time - `Optional redactedBy` Who redacted this version, or `null` if it has not been redacted. In practice always an `api_actor`, `user_actor`, or `service_account_actor` (agents do not have a redact capability). ### Example ```java package com.anthropic.example; import com.anthropic.client.AnthropicClient; import com.anthropic.client.okhttp.AnthropicOkHttpClient; import com.anthropic.models.beta.memorystores.memoryversions.MemoryVersionListPage; import com.anthropic.models.beta.memorystores.memoryversions.MemoryVersionListParams; public final class Main { private Main() {} public static void main(String[] args) { AnthropicClient client = AnthropicOkHttpClient.fromEnv(); MemoryVersionListPage page = client.beta().memoryStores().memoryVersions().list("memory_store_id"); } } ``` #### Response (200) ```json { "data": [ { "id": "memver_011CZkZBJq5dWxk9fVLNcPht", "created_at": "2026-03-15T10:00:00Z", "memory_id": "mem_011CZkZ9X2dpNyB6YbtxvB6e", "memory_store_id": "memstore_01Wf3kQ8tZxB2mVr7HcJ4aNd", "operation": "created", "type": "memory_version", "content": null, "content_sha256": "ba7936d94c84d948a2232088f78228f175df6a8353b2d5bc9228eee5794a0024", "content_size_bytes": 28, "created_by": { "session_id": "sesn_011CZkZAtmR3yMPDzynEDxu7", "type": "session_actor" }, "path": "/preferences/formatting.md", "redacted_at": null, "redacted_by": { "session_id": "x", "type": "session_actor" } } ], "next_page": "page_MjAyNS0wNS0xNFQwMDowMDowMFo=" } ``` ## Retrieve a memory version `BetaManagedAgentsMemoryVersion beta().memoryStores().memoryVersions().retrieve(params, requestOptions = RequestOptions.none())` **GET** `/v1/memory_stores/{memory_store_id}/memory_versions/{memory_version_id}` Retrieve a memory version ### Parameters - `MemoryVersionRetrieveParams params` - `String memoryStoreId` (path parameter) The ID of the memory store that holds the version (`memstore_...`). - `Optional memoryVersionId` (path parameter) The ID of the memory version to retrieve (`memver_...`). - `Optional view` (query parameter) Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20. - `Optional> betas` (header parameter) This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")` - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")` - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")` - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")` - `PDFS_2024_09_25("pdfs-2024-09-25")` - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")` - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")` - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")` - `FILES_API_2025_04_14("files-api-2025-04-14")` - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")` - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")` - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")` - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")` - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")` - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")` - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")` - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")` - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")` - `SKILLS_2025_10_02("skills-2025-10-02")` - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")` - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")` - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")` - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")` - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")` - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")` - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")` - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")` - `DREAMING_2026_04_21("dreaming-2026-04-21")` - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")` - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")` - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")` - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")` - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")` - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")` - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")` - `COMPACT_2026_01_12("compact-2026-01-12")` - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")` - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")` - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")` - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")` - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")` - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")` - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")` - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")` - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")` - `COMPACT_2026_09_04("compact-2026-09-04")` - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")` - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")` - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")` - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")` - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")` - `Optional workspaceId` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `class BetaManagedAgentsMemoryVersion` A `memory_version` object: one immutable, attributed row in a memory's append-only history. Every non-no-op mutation to a memory produces a new version. Versions belong to the store (not the individual memory) and are not deleted with the memory; each version is retained for at least the version retention period after it was written, unless the store itself is deleted. Retrieving a redacted version returns 200 with `content`, `path`, `content_size_bytes`, and `content_sha256` set to `null`; branch on `redacted_at`, not HTTP status. - `Type type` - `String id` Unique identifier for this version (a `memver_...` value). - `LocalDateTime createdAt` When this version was written, in RFC 3339 format. format: date-time - `String memoryId` ID of the memory this version snapshots (a `mem_...` value). Remains valid after the memory is deleted; pass it as `memory_id` to [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=java) to retrieve the memory's retained versions, including the `deleted` row while the lineage is retained. - `String memoryStoreId` ID of the memory store this version belongs to (a `memstore_...` value). - `BetaManagedAgentsMemoryVersionOperation operation` The kind of mutation this version records: `created`, `modified`, or `deleted`. - `CREATED("created")` The memory was created. The first version in any memory's lineage. - `MODIFIED("modified")` The memory's `content`, `path`, or both were changed via update. Writes the agent makes through the filesystem mount also appear as `modified`. - `DELETED("deleted")` The memory was deleted. The `content`, `content_size_bytes`, and `content_sha256` fields are `null` on this version. The preceding version, while it is retained, records the deleted content's size and hash. - `Optional content` The memory's UTF-8 text content as of this version. `null` when `view=basic`, when `operation` is `deleted`, or when `redacted_at` is set. - `Optional contentSha256` Lowercase hex SHA-256 digest of `content` as of this version (64 characters). `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. - `Optional contentSizeBytes` Size of `content` in bytes as of this version. `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. format: int32 - `Optional createdBy` Who performed this write: one of `session_actor`, `api_actor`, `user_actor`, or `service_account_actor`; `null` when no writer is recorded. Captured at write time and preserved through redaction. A `session_actor` is an agent writing through the store's mounted filesystem at `/mnt/memory/`. The API key that created that session is not recorded on agent writes, so attribution names who made the write, not who is ultimately responsible; look up session provenance via the [Sessions API](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java). - `class BetaManagedAgentsSessionActor` An agent acting during a session, for example through the session's mounted filesystem. It names the session itself, not the user or API key that started the session. - `Type type` - `String sessionId` ID of the session (a `sesn_...` value). Look up the session via [Retrieve a session](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java) for further provenance. minLength: 1 - `class BetaManagedAgentsApiActor` A direct caller of the public API, identified by the API key that authenticated the request. - `Type type` - `String apiKeyId` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `class BetaManagedAgentsUserActor` A human user, for example acting through the Anthropic Console. - `Type type` - `String userId` ID of the user (a `user_...` value). minLength: 1 - `class BetaManagedAgentsServiceAccountActor` A workload authenticated as a service account, for example via Workload Identity Federation. - `JsonValue type = "service_account_actor"` - `String serviceAccountId` ID of the service account (a `svac_...` value). minLength: 1 - `Optional path` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `Optional redactedAt` When this version was redacted, in RFC 3339 format, or `null` if it has not been redacted. When set, `content`, `path`, `content_size_bytes`, and `content_sha256` are all `null`. See [Redact a memory version](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/redact?sdk_languages=java). format: date-time - `Optional redactedBy` Who redacted this version, or `null` if it has not been redacted. In practice always an `api_actor`, `user_actor`, or `service_account_actor` (agents do not have a redact capability). ### Example ```java package com.anthropic.example; import com.anthropic.client.AnthropicClient; import com.anthropic.client.okhttp.AnthropicOkHttpClient; import com.anthropic.models.beta.memorystores.memoryversions.BetaManagedAgentsMemoryVersion; import com.anthropic.models.beta.memorystores.memoryversions.MemoryVersionRetrieveParams; public final class Main { private Main() {} public static void main(String[] args) { AnthropicClient client = AnthropicOkHttpClient.fromEnv(); MemoryVersionRetrieveParams params = MemoryVersionRetrieveParams.builder() .memoryStoreId("memory_store_id") .memoryVersionId("memory_version_id") .build(); BetaManagedAgentsMemoryVersion betaManagedAgentsMemoryVersion = client.beta().memoryStores().memoryVersions().retrieve(params); } } ``` #### Response (200) ```json { "id": "id", "created_at": "2019-12-27T18:11:19.117Z", "memory_id": "memory_id", "memory_store_id": "memory_store_id", "operation": "created", "type": "memory_version", "content": "content", "content_sha256": "content_sha256", "content_size_bytes": 0, "created_by": { "session_id": "x", "type": "session_actor" }, "path": "path", "redacted_at": "2019-12-27T18:11:19.117Z", "redacted_by": { "session_id": "x", "type": "session_actor" } } ``` ## Redact a memory version `BetaManagedAgentsMemoryVersion beta().memoryStores().memoryVersions().redact(params, requestOptions = RequestOptions.none())` **POST** `/v1/memory_stores/{memory_store_id}/memory_versions/{memory_version_id}/redact` Redact a memory version ### Parameters - `MemoryVersionRedactParams params` - `String memoryStoreId` (path parameter) The ID of the memory store that holds the version (`memstore_...`). - `Optional memoryVersionId` (path parameter) The ID of the memory version to redact (`memver_...`). - `Optional> betas` (header parameter) This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")` - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")` - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")` - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")` - `PDFS_2024_09_25("pdfs-2024-09-25")` - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")` - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")` - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")` - `FILES_API_2025_04_14("files-api-2025-04-14")` - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")` - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")` - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")` - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")` - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")` - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")` - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")` - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")` - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")` - `SKILLS_2025_10_02("skills-2025-10-02")` - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")` - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")` - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")` - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")` - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")` - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")` - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")` - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")` - `DREAMING_2026_04_21("dreaming-2026-04-21")` - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")` - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")` - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")` - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")` - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")` - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")` - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")` - `COMPACT_2026_01_12("compact-2026-01-12")` - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")` - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")` - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")` - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")` - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")` - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")` - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")` - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")` - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")` - `COMPACT_2026_09_04("compact-2026-09-04")` - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")` - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")` - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")` - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")` - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")` - `Optional workspaceId` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `class BetaManagedAgentsMemoryVersion` A `memory_version` object: one immutable, attributed row in a memory's append-only history. Every non-no-op mutation to a memory produces a new version. Versions belong to the store (not the individual memory) and are not deleted with the memory; each version is retained for at least the version retention period after it was written, unless the store itself is deleted. Retrieving a redacted version returns 200 with `content`, `path`, `content_size_bytes`, and `content_sha256` set to `null`; branch on `redacted_at`, not HTTP status. - `Type type` - `String id` Unique identifier for this version (a `memver_...` value). - `LocalDateTime createdAt` When this version was written, in RFC 3339 format. format: date-time - `String memoryId` ID of the memory this version snapshots (a `mem_...` value). Remains valid after the memory is deleted; pass it as `memory_id` to [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=java) to retrieve the memory's retained versions, including the `deleted` row while the lineage is retained. - `String memoryStoreId` ID of the memory store this version belongs to (a `memstore_...` value). - `BetaManagedAgentsMemoryVersionOperation operation` The kind of mutation this version records: `created`, `modified`, or `deleted`. - `CREATED("created")` The memory was created. The first version in any memory's lineage. - `MODIFIED("modified")` The memory's `content`, `path`, or both were changed via update. Writes the agent makes through the filesystem mount also appear as `modified`. - `DELETED("deleted")` The memory was deleted. The `content`, `content_size_bytes`, and `content_sha256` fields are `null` on this version. The preceding version, while it is retained, records the deleted content's size and hash. - `Optional content` The memory's UTF-8 text content as of this version. `null` when `view=basic`, when `operation` is `deleted`, or when `redacted_at` is set. - `Optional contentSha256` Lowercase hex SHA-256 digest of `content` as of this version (64 characters). `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. - `Optional contentSizeBytes` Size of `content` in bytes as of this version. `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. format: int32 - `Optional createdBy` Who performed this write: one of `session_actor`, `api_actor`, `user_actor`, or `service_account_actor`; `null` when no writer is recorded. Captured at write time and preserved through redaction. A `session_actor` is an agent writing through the store's mounted filesystem at `/mnt/memory/`. The API key that created that session is not recorded on agent writes, so attribution names who made the write, not who is ultimately responsible; look up session provenance via the [Sessions API](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java). - `class BetaManagedAgentsSessionActor` An agent acting during a session, for example through the session's mounted filesystem. It names the session itself, not the user or API key that started the session. - `Type type` - `String sessionId` ID of the session (a `sesn_...` value). Look up the session via [Retrieve a session](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java) for further provenance. minLength: 1 - `class BetaManagedAgentsApiActor` A direct caller of the public API, identified by the API key that authenticated the request. - `Type type` - `String apiKeyId` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `class BetaManagedAgentsUserActor` A human user, for example acting through the Anthropic Console. - `Type type` - `String userId` ID of the user (a `user_...` value). minLength: 1 - `class BetaManagedAgentsServiceAccountActor` A workload authenticated as a service account, for example via Workload Identity Federation. - `JsonValue type = "service_account_actor"` - `String serviceAccountId` ID of the service account (a `svac_...` value). minLength: 1 - `Optional path` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `Optional redactedAt` When this version was redacted, in RFC 3339 format, or `null` if it has not been redacted. When set, `content`, `path`, `content_size_bytes`, and `content_sha256` are all `null`. See [Redact a memory version](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/redact?sdk_languages=java). format: date-time - `Optional redactedBy` Who redacted this version, or `null` if it has not been redacted. In practice always an `api_actor`, `user_actor`, or `service_account_actor` (agents do not have a redact capability). ### Example ```java package com.anthropic.example; import com.anthropic.client.AnthropicClient; import com.anthropic.client.okhttp.AnthropicOkHttpClient; import com.anthropic.models.beta.memorystores.memoryversions.BetaManagedAgentsMemoryVersion; import com.anthropic.models.beta.memorystores.memoryversions.MemoryVersionRedactParams; public final class Main { private Main() {} public static void main(String[] args) { AnthropicClient client = AnthropicOkHttpClient.fromEnv(); MemoryVersionRedactParams params = MemoryVersionRedactParams.builder() .memoryStoreId("memory_store_id") .memoryVersionId("memory_version_id") .build(); BetaManagedAgentsMemoryVersion betaManagedAgentsMemoryVersion = client.beta().memoryStores().memoryVersions().redact(params); } } ``` #### Response (200) ```json { "id": "id", "created_at": "2019-12-27T18:11:19.117Z", "memory_id": "memory_id", "memory_store_id": "memory_store_id", "operation": "created", "type": "memory_version", "content": "content", "content_sha256": "content_sha256", "content_size_bytes": 0, "created_by": { "session_id": "x", "type": "session_actor" }, "path": "path", "redacted_at": "2019-12-27T18:11:19.117Z", "redacted_by": { "session_id": "x", "type": "session_actor" } } ``` ## Domain types ### Beta Managed Agents Actor - `class BetaManagedAgentsActor: union` Identifies who performed an operation. Recorded when the operation happens and not updated afterwards, so the ID may refer to a user, service account, API key, or session that has since been deleted. - `class BetaManagedAgentsSessionActor` An agent acting during a session, for example through the session's mounted filesystem. It names the session itself, not the user or API key that started the session. - `Type type` - `String sessionId` ID of the session (a `sesn_...` value). Look up the session via [Retrieve a session](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java) for further provenance. minLength: 1 - `class BetaManagedAgentsApiActor` A direct caller of the public API, identified by the API key that authenticated the request. - `Type type` - `String apiKeyId` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `class BetaManagedAgentsUserActor` A human user, for example acting through the Anthropic Console. - `Type type` - `String userId` ID of the user (a `user_...` value). minLength: 1 - `class BetaManagedAgentsServiceAccountActor` A workload authenticated as a service account, for example via Workload Identity Federation. - `JsonValue type = "service_account_actor"` - `String serviceAccountId` ID of the service account (a `svac_...` value). minLength: 1 ### Beta Managed Agents API Actor - `class BetaManagedAgentsApiActor` A direct caller of the public API, identified by the API key that authenticated the request. - `Type type` - `String apiKeyId` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 ### Beta Managed Agents Memory Version - `class BetaManagedAgentsMemoryVersion` A `memory_version` object: one immutable, attributed row in a memory's append-only history. Every non-no-op mutation to a memory produces a new version. Versions belong to the store (not the individual memory) and are not deleted with the memory; each version is retained for at least the version retention period after it was written, unless the store itself is deleted. Retrieving a redacted version returns 200 with `content`, `path`, `content_size_bytes`, and `content_sha256` set to `null`; branch on `redacted_at`, not HTTP status. - `Type type` - `String id` Unique identifier for this version (a `memver_...` value). - `LocalDateTime createdAt` When this version was written, in RFC 3339 format. format: date-time - `String memoryId` ID of the memory this version snapshots (a `mem_...` value). Remains valid after the memory is deleted; pass it as `memory_id` to [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=java) to retrieve the memory's retained versions, including the `deleted` row while the lineage is retained. - `String memoryStoreId` ID of the memory store this version belongs to (a `memstore_...` value). - `BetaManagedAgentsMemoryVersionOperation operation` The kind of mutation this version records: `created`, `modified`, or `deleted`. - `CREATED("created")` The memory was created. The first version in any memory's lineage. - `MODIFIED("modified")` The memory's `content`, `path`, or both were changed via update. Writes the agent makes through the filesystem mount also appear as `modified`. - `DELETED("deleted")` The memory was deleted. The `content`, `content_size_bytes`, and `content_sha256` fields are `null` on this version. The preceding version, while it is retained, records the deleted content's size and hash. - `Optional content` The memory's UTF-8 text content as of this version. `null` when `view=basic`, when `operation` is `deleted`, or when `redacted_at` is set. - `Optional contentSha256` Lowercase hex SHA-256 digest of `content` as of this version (64 characters). `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. - `Optional contentSizeBytes` Size of `content` in bytes as of this version. `null` when `redacted_at` is set or `operation` is `deleted`. Populated regardless of `view` otherwise. format: int32 - `Optional createdBy` Who performed this write: one of `session_actor`, `api_actor`, `user_actor`, or `service_account_actor`; `null` when no writer is recorded. Captured at write time and preserved through redaction. A `session_actor` is an agent writing through the store's mounted filesystem at `/mnt/memory/`. The API key that created that session is not recorded on agent writes, so attribution names who made the write, not who is ultimately responsible; look up session provenance via the [Sessions API](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java). - `class BetaManagedAgentsSessionActor` An agent acting during a session, for example through the session's mounted filesystem. It names the session itself, not the user or API key that started the session. - `Type type` - `String sessionId` ID of the session (a `sesn_...` value). Look up the session via [Retrieve a session](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java) for further provenance. minLength: 1 - `class BetaManagedAgentsApiActor` A direct caller of the public API, identified by the API key that authenticated the request. - `Type type` - `String apiKeyId` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `class BetaManagedAgentsUserActor` A human user, for example acting through the Anthropic Console. - `Type type` - `String userId` ID of the user (a `user_...` value). minLength: 1 - `class BetaManagedAgentsServiceAccountActor` A workload authenticated as a service account, for example via Workload Identity Federation. - `JsonValue type = "service_account_actor"` - `String serviceAccountId` ID of the service account (a `svac_...` value). minLength: 1 - `Optional path` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `Optional redactedAt` When this version was redacted, in RFC 3339 format, or `null` if it has not been redacted. When set, `content`, `path`, `content_size_bytes`, and `content_sha256` are all `null`. See [Redact a memory version](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/redact?sdk_languages=java). format: date-time - `Optional redactedBy` Who redacted this version, or `null` if it has not been redacted. In practice always an `api_actor`, `user_actor`, or `service_account_actor` (agents do not have a redact capability). ### Beta Managed Agents Memory Version Operation - `enum BetaManagedAgentsMemoryVersionOperation` The kind of mutation a `memory_version` records. Every non-no-op mutation to a memory appends exactly one version row with one of these values. - `CREATED("created")` The memory was created. The first version in any memory's lineage. - `MODIFIED("modified")` The memory's `content`, `path`, or both were changed via update. Writes the agent makes through the filesystem mount also appear as `modified`. - `DELETED("deleted")` The memory was deleted. The `content`, `content_size_bytes`, and `content_sha256` fields are `null` on this version. The preceding version, while it is retained, records the deleted content's size and hash. ### Beta Managed Agents Service Account Actor - `class BetaManagedAgentsServiceAccountActor` A workload authenticated as a service account, for example via Workload Identity Federation. - `JsonValue type = "service_account_actor"` - `String serviceAccountId` ID of the service account (a `svac_...` value). minLength: 1 ### Beta Managed Agents Session Actor - `class BetaManagedAgentsSessionActor` An agent acting during a session, for example through the session's mounted filesystem. It names the session itself, not the user or API key that started the session. - `Type type` - `String sessionId` ID of the session (a `sesn_...` value). Look up the session via [Retrieve a session](https://platform.claude.com/docs/en/api/beta/sessions/retrieve?sdk_languages=java) for further provenance. minLength: 1 ### Beta Managed Agents User Actor - `class BetaManagedAgentsUserActor` A human user, for example acting through the Anthropic Console. - `Type type` - `String userId` ID of the user (a `user_...` value). minLength: 1