--- title: Memory Stores url: https://platform.claude.com/docs/en/api/beta/memory_stores --- # Memory Stores ## Create a memory store **POST** `/v1/memory_stores` Create a memory store ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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. ### Body parameters - `name: string` Human-readable name for the store. Required; 1–255 characters; no control characters. The mount-path slug under `/mnt/memory/` is derived from this name (lowercased, non-alphanumeric runs collapsed to a hyphen). Names need not be unique within a workspace. minLength: 1, maxLength: 255 - `description: optional string` Free-text description of what the store contains, up to 1024 characters. Included in the agent's system prompt when the store is attached, so word it to be useful to the agent. maxLength: 1024 - `metadata: optional map[string]` Arbitrary key-value tags for your own bookkeeping (such as the end user a store belongs to). Up to 16 pairs; keys 1–64 characters; values up to 512 characters. Not visible to the agent. ### Returns - `BetaManagedAgentsMemoryStore object` A `memory_store`: a named container for agent memories, scoped to a workspace. Attach a store to a session via `resources[]` to mount it as a directory the agent can read and write. - `type: "memory_store"` - `id: string` Unique identifier for the memory store (a `memstore_...` tagged ID). Use this when attaching the store to a session, or in the `{memory_store_id}` path parameter of subsequent calls. - `archived_at: string or null` Timestamp when the store was archived, or `null` if active. Set once and never cleared; archiving is one-way. Archived stores are read-only and cannot be attached to new sessions. format: date-time - `created_at: string` Timestamp when the store was created. format: date-time - `description: string` Free-text description of what the store contains, up to 1024 characters. Included in the agent's system prompt when the store is attached, so word it to be useful to the agent. Empty string when unset. - `metadata: map[string]` Arbitrary key-value tags for your own bookkeeping (such as the end user a store belongs to). Up to 16 pairs; keys 1–64 characters; values up to 512 characters. Returned on retrieve/list but not filterable. - `name: string` Human-readable name for the store. 1–255 characters. The store's mount-path slug under `/mnt/memory/` is derived from this name. - `updated_at: string` Timestamp when the store's `name`, `description`, or `metadata` was last modified. Memory writes inside the store do not advance this. format: date-time ### Example ```bash curl https://api.anthropic.com/v1/memory_stores \ -H 'Content-Type: application/json' \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" \ -d '{ "name": "x" }' ``` #### Response (200) ```json { "id": "id", "archived_at": "2019-12-27T18:11:19.117Z", "created_at": "2019-12-27T18:11:19.117Z", "description": "description", "metadata": { "foo": "string" }, "name": "name", "type": "memory_store", "updated_at": "2019-12-27T18:11:19.117Z" } ``` ## List memory stores **GET** `/v1/memory_stores` List memory stores ### Query parameters - `"created_at[gte]": optional string` Return only stores whose `created_at` is at or after this time (inclusive). Sent on the wire as `created_at[gte]`. format: date-time - `"created_at[lte]": optional string` Return only stores whose `created_at` is at or before this time (inclusive). Sent on the wire as `created_at[lte]`. format: date-time - `include_archived: optional boolean` When `true`, archived stores are included in the results. Defaults to `false` (archived stores are excluded). - `limit: optional number` Maximum number of stores to return per page. Must be between 1 and 100. Defaults to 20 when omitted. format: int32 - `page: optional string` Opaque pagination cursor (a `page_...` value). Pass the `next_page` value from a previous response to fetch the next page; omit for the first page. ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `data: optional array of BetaManagedAgentsMemoryStore` Memory stores on this page, newest first. Empty when there are no stores matching the filters. - `type: "memory_store"` - `id: string` Unique identifier for the memory store (a `memstore_...` tagged ID). Use this when attaching the store to a session, or in the `{memory_store_id}` path parameter of subsequent calls. - `archived_at: string or null` Timestamp when the store was archived, or `null` if active. Set once and never cleared; archiving is one-way. Archived stores are read-only and cannot be attached to new sessions. format: date-time - `created_at: string` Timestamp when the store was created. format: date-time - `description: string` Free-text description of what the store contains, up to 1024 characters. Included in the agent's system prompt when the store is attached, so word it to be useful to the agent. Empty string when unset. - `metadata: map[string]` Arbitrary key-value tags for your own bookkeeping (such as the end user a store belongs to). Up to 16 pairs; keys 1–64 characters; values up to 512 characters. Returned on retrieve/list but not filterable. - `name: string` Human-readable name for the store. 1–255 characters. The store's mount-path slug under `/mnt/memory/` is derived from this name. - `updated_at: string` Timestamp when the store's `name`, `description`, or `metadata` was last modified. Memory writes inside the store do not advance this. format: date-time - `next_page: optional string or null` Opaque cursor for the next page (a `page_...` value). Pass as `page` on the next request. `null` when there are no more results. ### Example ```bash curl https://api.anthropic.com/v1/memory_stores \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` #### Response (200) ```json { "data": [ { "id": "memstore_01Wf3kQ8tZxB2mVr7HcJ4aNd", "archived_at": null, "created_at": "2026-03-15T10:00:00Z", "description": "Per-user preferences and project context.", "metadata": {}, "name": "User Preferences", "type": "memory_store", "updated_at": "2026-03-15T10:00:00Z" } ], "next_page": "page_MjAyNS0wNS0xNFQwMDowMDowMFo=" } ``` ## Retrieve a memory store **GET** `/v1/memory_stores/{memory_store_id}` Retrieve a memory store ### Path parameters - `memory_store_id: string` ID of the memory store to retrieve (a `memstore_...` identifier). Required. Enumerate IDs via `GET /v1/memory_stores`. ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `BetaManagedAgentsMemoryStore object` A `memory_store`: a named container for agent memories, scoped to a workspace. Attach a store to a session via `resources[]` to mount it as a directory the agent can read and write. - `type: "memory_store"` - `id: string` Unique identifier for the memory store (a `memstore_...` tagged ID). Use this when attaching the store to a session, or in the `{memory_store_id}` path parameter of subsequent calls. - `archived_at: string or null` Timestamp when the store was archived, or `null` if active. Set once and never cleared; archiving is one-way. Archived stores are read-only and cannot be attached to new sessions. format: date-time - `created_at: string` Timestamp when the store was created. format: date-time - `description: string` Free-text description of what the store contains, up to 1024 characters. Included in the agent's system prompt when the store is attached, so word it to be useful to the agent. Empty string when unset. - `metadata: map[string]` Arbitrary key-value tags for your own bookkeeping (such as the end user a store belongs to). Up to 16 pairs; keys 1–64 characters; values up to 512 characters. Returned on retrieve/list but not filterable. - `name: string` Human-readable name for the store. 1–255 characters. The store's mount-path slug under `/mnt/memory/` is derived from this name. - `updated_at: string` Timestamp when the store's `name`, `description`, or `metadata` was last modified. Memory writes inside the store do not advance this. format: date-time ### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` #### Response (200) ```json { "id": "id", "archived_at": "2019-12-27T18:11:19.117Z", "created_at": "2019-12-27T18:11:19.117Z", "description": "description", "metadata": { "foo": "string" }, "name": "name", "type": "memory_store", "updated_at": "2019-12-27T18:11:19.117Z" } ``` ## Update a memory store **POST** `/v1/memory_stores/{memory_store_id}` Update a memory store ### Path parameters - `memory_store_id: string` ID of the memory store to update (a `memstore_...` identifier). Required. Enumerate IDs via `GET /v1/memory_stores`. Updating an archived store returns 400. ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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. ### Body parameters - `description: optional string or null` New description for the store, up to 1024 characters. Pass an empty string to clear it. maxLength: 1024 - `metadata: optional map[string] or null` Metadata patch. Set a key to a string to upsert it, or to null to delete it. Omit the field to preserve. The stored bag is limited to 16 keys (up to 64 chars each) with values up to 512 chars. - `name: optional string or null` New human-readable name for the store. 1–255 characters; no control characters. Renaming changes the slug used for the store's `mount_path` in sessions created after the update. minLength: 1, maxLength: 255 ### Returns - `BetaManagedAgentsMemoryStore object` A `memory_store`: a named container for agent memories, scoped to a workspace. Attach a store to a session via `resources[]` to mount it as a directory the agent can read and write. - `type: "memory_store"` - `id: string` Unique identifier for the memory store (a `memstore_...` tagged ID). Use this when attaching the store to a session, or in the `{memory_store_id}` path parameter of subsequent calls. - `archived_at: string or null` Timestamp when the store was archived, or `null` if active. Set once and never cleared; archiving is one-way. Archived stores are read-only and cannot be attached to new sessions. format: date-time - `created_at: string` Timestamp when the store was created. format: date-time - `description: string` Free-text description of what the store contains, up to 1024 characters. Included in the agent's system prompt when the store is attached, so word it to be useful to the agent. Empty string when unset. - `metadata: map[string]` Arbitrary key-value tags for your own bookkeeping (such as the end user a store belongs to). Up to 16 pairs; keys 1–64 characters; values up to 512 characters. Returned on retrieve/list but not filterable. - `name: string` Human-readable name for the store. 1–255 characters. The store's mount-path slug under `/mnt/memory/` is derived from this name. - `updated_at: string` Timestamp when the store's `name`, `description`, or `metadata` was last modified. Memory writes inside the store do not advance this. format: date-time ### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID \ -H 'Content-Type: application/json' \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" \ -d '{}' ``` #### Response (200) ```json { "id": "id", "archived_at": "2019-12-27T18:11:19.117Z", "created_at": "2019-12-27T18:11:19.117Z", "description": "description", "metadata": { "foo": "string" }, "name": "name", "type": "memory_store", "updated_at": "2019-12-27T18:11:19.117Z" } ``` ## Delete a memory store **DELETE** `/v1/memory_stores/{memory_store_id}` Delete a memory store ### Path parameters - `memory_store_id: string` ID of the memory store to permanently delete (a `memstore_...` identifier). Required. Deletion cascades to all memories and memory versions in the store and cannot be undone. ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `BetaManagedAgentsDeletedMemoryStore object` Confirmation that a `memory_store` was deleted. - `type: "memory_store_deleted"` - `id: string` ID of the deleted memory store (a `memstore_...` identifier). The store and all its memories and versions are no longer retrievable. ### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID \ -X DELETE \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` #### Response (200) ```json { "id": "id", "type": "memory_store_deleted" } ``` ## Archive a memory store **POST** `/v1/memory_stores/{memory_store_id}/archive` Archive a memory store ### Path parameters - `memory_store_id: string` ID of the memory store to archive (a `memstore_...` identifier). Required. Archiving is one-way and idempotent; archived stores cannot be unarchived. Enumerate IDs via `GET /v1/memory_stores`. ### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `BetaManagedAgentsMemoryStore object` A `memory_store`: a named container for agent memories, scoped to a workspace. Attach a store to a session via `resources[]` to mount it as a directory the agent can read and write. - `type: "memory_store"` - `id: string` Unique identifier for the memory store (a `memstore_...` tagged ID). Use this when attaching the store to a session, or in the `{memory_store_id}` path parameter of subsequent calls. - `archived_at: string or null` Timestamp when the store was archived, or `null` if active. Set once and never cleared; archiving is one-way. Archived stores are read-only and cannot be attached to new sessions. format: date-time - `created_at: string` Timestamp when the store was created. format: date-time - `description: string` Free-text description of what the store contains, up to 1024 characters. Included in the agent's system prompt when the store is attached, so word it to be useful to the agent. Empty string when unset. - `metadata: map[string]` Arbitrary key-value tags for your own bookkeeping (such as the end user a store belongs to). Up to 16 pairs; keys 1–64 characters; values up to 512 characters. Returned on retrieve/list but not filterable. - `name: string` Human-readable name for the store. 1–255 characters. The store's mount-path slug under `/mnt/memory/` is derived from this name. - `updated_at: string` Timestamp when the store's `name`, `description`, or `metadata` was last modified. Memory writes inside the store do not advance this. format: date-time ### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/archive \ -X POST \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` #### Response (200) ```json { "id": "id", "archived_at": "2019-12-27T18:11:19.117Z", "created_at": "2019-12-27T18:11:19.117Z", "description": "description", "metadata": { "foo": "string" }, "name": "name", "type": "memory_store", "updated_at": "2019-12-27T18:11:19.117Z" } ``` ## Domain types ### Beta Managed Agents Deleted Memory Store - `BetaManagedAgentsDeletedMemoryStore object` Confirmation that a `memory_store` was deleted. - `type: "memory_store_deleted"` - `id: string` ID of the deleted memory store (a `memstore_...` identifier). The store and all its memories and versions are no longer retrievable. ### Beta Managed Agents Memory Store - `BetaManagedAgentsMemoryStore object` A `memory_store`: a named container for agent memories, scoped to a workspace. Attach a store to a session via `resources[]` to mount it as a directory the agent can read and write. - `type: "memory_store"` - `id: string` Unique identifier for the memory store (a `memstore_...` tagged ID). Use this when attaching the store to a session, or in the `{memory_store_id}` path parameter of subsequent calls. - `archived_at: string or null` Timestamp when the store was archived, or `null` if active. Set once and never cleared; archiving is one-way. Archived stores are read-only and cannot be attached to new sessions. format: date-time - `created_at: string` Timestamp when the store was created. format: date-time - `description: string` Free-text description of what the store contains, up to 1024 characters. Included in the agent's system prompt when the store is attached, so word it to be useful to the agent. Empty string when unset. - `metadata: map[string]` Arbitrary key-value tags for your own bookkeeping (such as the end user a store belongs to). Up to 16 pairs; keys 1–64 characters; values up to 512 characters. Returned on retrieve/list but not filterable. - `name: string` Human-readable name for the store. 1–255 characters. The store's mount-path slug under `/mnt/memory/` is derived from this name. - `updated_at: string` Timestamp when the store's `name`, `description`, or `metadata` was last modified. Memory writes inside the store do not advance this. format: date-time ## Memory Stores › Memories ### Create a memory **POST** `/v1/memory_stores/{memory_store_id}/memories` Create a memory #### Path parameters - `memory_store_id: string` The ID of the memory store to create the memory in (`memstore_...`). #### Query parameters - `view: optional BetaManagedAgentsMemoryView` 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. - `"basic"` Return the object with `content` set to `null`. The `content_size_bytes` and `content_sha256` fields remain populated, so sync clients can diff without fetching content. - `"full"` Return the object with `content` populated. On list endpoints, `view=full` caps `limit` at 20. #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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. #### Body parameters - `content: string or null` UTF-8 text content for the new memory. Maximum 100 kB (102,400 bytes). Required; pass `""` explicitly to create an empty memory. - `path: string` Hierarchical path for the new memory, e.g. `/projects/foo/notes.md`. Must start with `/`, contain at least one non-empty segment, and be at most 1,024 bytes. Must not contain empty segments, `.` or `..` segments, control or format characters, or the Unicode line and paragraph separators (U+2028, U+2029), and must be NFC-normalized. Paths are case-sensitive. minLength: 2, maxLength: 1024 #### Returns - `BetaManagedAgentsMemory object` A `memory` object: a single text document at a hierarchical path inside a memory store. The `content` field is populated when `view=full` and `null` when `view=basic`; the `content_size_bytes` and `content_sha256` fields are always populated so sync clients can diff without fetching content. Memories are addressed by their `mem_...` ID; the path is the create key and can be changed via update. - `type: "memory"` - `id: string` Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory. - `content_sha256: string` Lowercase hex SHA-256 digest of the UTF-8 `content` bytes (64 characters). The server applies no normalization, so clients can compute the same hash locally for staleness checks and as the value for a `content_sha256` precondition on update. Always populated, regardless of `view`. - `content_size_bytes: number` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: string` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: string` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: string` ID of the `memory_version` representing this memory's current content (a `memver_...` value). This is the authoritative head pointer; `memory_version` objects do not carry an `is_latest` flag, so compare against this field instead. Enumerate the history via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). - `path: string` Hierarchical path of the memory within the store, e.g. `/projects/foo/notes.md`. Always starts with `/`. Paths are case-sensitive and unique within a store. Maximum 1,024 bytes. - `updated_at: string` When this memory was last modified, in RFC 3339 format. Use this as a cheap freshness signal; for who made the change, look up the head version's `created_by` via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). format: date-time - `content: optional string or null` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). #### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memories \ -H 'Content-Type: application/json' \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" \ -d '{ "content": "content", "path": "xx" }' ``` ##### Response (200) ```json { "id": "id", "content_sha256": "content_sha256", "content_size_bytes": 0, "created_at": "2019-12-27T18:11:19.117Z", "memory_store_id": "memory_store_id", "memory_version_id": "memory_version_id", "path": "path", "type": "memory", "updated_at": "2019-12-27T18:11:19.117Z", "content": "content" } ``` ### List memories **GET** `/v1/memory_stores/{memory_store_id}/memories` List memories #### Path parameters - `memory_store_id: string` The ID of the memory store to list memories from (`memstore_...`). #### Query parameters - `depth: optional number` `0` (or omitted) returns all descendants below `path_prefix` (recursive). `1` returns immediate children only; deeper entries roll up as `memory_prefix` items. `depth=1` behaves like `ls`; omitting `depth` behaves like `find`. format: int32 - `limit: optional number` Maximum number of items to return per page. Must be between 1 and 100. Defaults to 20 when omitted. Capped at 20 when `view=full`. Both `memory` and `memory_prefix` items count toward the limit. format: int32 - `page: optional string` Opaque pagination cursor (a `page_...` value). Pass the `next_page` value from a previous response to fetch the next page; omit for the first page. - `path_prefix: optional string` Optional path prefix filter. Must end with `/` (segment-aligned), e.g., `/notes/`. This value appears in request URLs. Do not include secrets or personally identifiable information. - `view: optional BetaManagedAgentsMemoryView` Which projection of each `memory` to return. Defaults to `basic` (content omitted). `full` populates `content` on each item and caps `limit` at 20; use this as the bulk-read path for export and sync. - `"basic"` Return the object with `content` set to `null`. The `content_size_bytes` and `content_sha256` fields remain populated, so sync clients can diff without fetching content. - `"full"` Return the object with `content` populated. On list endpoints, `view=full` caps `limit` at 20. #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `data: optional array of BetaManagedAgentsMemoryListItem` One page of results. Each item is either a `memory` object or, when `depth` was set, a `memory_prefix` rollup marker. Items are returned in a stable, server-defined order. - `BetaManagedAgentsMemory object` A `memory` object: a single text document at a hierarchical path inside a memory store. The `content` field is populated when `view=full` and `null` when `view=basic`; the `content_size_bytes` and `content_sha256` fields are always populated so sync clients can diff without fetching content. Memories are addressed by their `mem_...` ID; the path is the create key and can be changed via update. - `type: "memory"` - `id: string` Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory. - `content_sha256: string` Lowercase hex SHA-256 digest of the UTF-8 `content` bytes (64 characters). The server applies no normalization, so clients can compute the same hash locally for staleness checks and as the value for a `content_sha256` precondition on update. Always populated, regardless of `view`. - `content_size_bytes: number` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: string` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: string` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: string` ID of the `memory_version` representing this memory's current content (a `memver_...` value). This is the authoritative head pointer; `memory_version` objects do not carry an `is_latest` flag, so compare against this field instead. Enumerate the history via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). - `path: string` Hierarchical path of the memory within the store, e.g. `/projects/foo/notes.md`. Always starts with `/`. Paths are case-sensitive and unique within a store. Maximum 1,024 bytes. - `updated_at: string` When this memory was last modified, in RFC 3339 format. Use this as a cheap freshness signal; for who made the change, look up the head version's `created_by` via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). format: date-time - `content: optional string or null` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). - `BetaManagedAgentsMemoryPrefix object` A rolled-up directory marker returned by [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=http) when `depth` is set. Indicates that one or more memories exist deeper than the requested depth under this prefix. This is a list-time rollup, not a stored resource; it has no ID and no lifecycle. Each prefix counts toward the page `limit` and interleaves with `memory` items in path order. - `type: "memory_prefix"` - `path: string` The rolled-up path prefix, including a trailing `/` (e.g. `/projects/foo/`). Pass this value as `path_prefix` on a subsequent list call to drill into the directory. - `next_page: optional string or null` Opaque cursor for the next page (a `page_...` value), or `null` if there are no more results. Pass as `page` on the next request. #### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memories \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` ##### Response (200) ```json { "data": [ { "id": "mem_011CZkZ9X2dpNyB6YbtxvB6e", "content_sha256": "ba7936d94c84d948a2232088f78228f175df6a8353b2d5bc9228eee5794a0024", "content_size_bytes": 28, "created_at": "2026-03-15T10:00:00Z", "memory_store_id": "memstore_01Wf3kQ8tZxB2mVr7HcJ4aNd", "memory_version_id": "memver_011CZkZBJq5dWxk9fVLNcPht", "path": "/preferences/formatting.md", "type": "memory", "updated_at": "2026-03-15T10:00:00Z", "content": null } ], "next_page": "page_MjAyNS0wNS0xNFQwMDowMDowMFo=" } ``` ### Retrieve a memory **GET** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}` Retrieve a memory #### Path parameters - `memory_store_id: string` The ID of the memory store that holds the memory (`memstore_...`). - `memory_id: string` The ID of the memory to retrieve (`mem_...`). #### Query parameters - `view: optional BetaManagedAgentsMemoryView` 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. - `"basic"` Return the object with `content` set to `null`. The `content_size_bytes` and `content_sha256` fields remain populated, so sync clients can diff without fetching content. - `"full"` Return the object with `content` populated. On list endpoints, `view=full` caps `limit` at 20. #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `BetaManagedAgentsMemory object` A `memory` object: a single text document at a hierarchical path inside a memory store. The `content` field is populated when `view=full` and `null` when `view=basic`; the `content_size_bytes` and `content_sha256` fields are always populated so sync clients can diff without fetching content. Memories are addressed by their `mem_...` ID; the path is the create key and can be changed via update. - `type: "memory"` - `id: string` Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory. - `content_sha256: string` Lowercase hex SHA-256 digest of the UTF-8 `content` bytes (64 characters). The server applies no normalization, so clients can compute the same hash locally for staleness checks and as the value for a `content_sha256` precondition on update. Always populated, regardless of `view`. - `content_size_bytes: number` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: string` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: string` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: string` ID of the `memory_version` representing this memory's current content (a `memver_...` value). This is the authoritative head pointer; `memory_version` objects do not carry an `is_latest` flag, so compare against this field instead. Enumerate the history via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). - `path: string` Hierarchical path of the memory within the store, e.g. `/projects/foo/notes.md`. Always starts with `/`. Paths are case-sensitive and unique within a store. Maximum 1,024 bytes. - `updated_at: string` When this memory was last modified, in RFC 3339 format. Use this as a cheap freshness signal; for who made the change, look up the head version's `created_by` via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). format: date-time - `content: optional string or null` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). #### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memories/$MEMORY_ID \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` ##### Response (200) ```json { "id": "id", "content_sha256": "content_sha256", "content_size_bytes": 0, "created_at": "2019-12-27T18:11:19.117Z", "memory_store_id": "memory_store_id", "memory_version_id": "memory_version_id", "path": "path", "type": "memory", "updated_at": "2019-12-27T18:11:19.117Z", "content": "content" } ``` ### Update a memory **POST** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}` Update a memory #### Path parameters - `memory_store_id: string` The ID of the memory store that holds the memory (`memstore_...`). - `memory_id: string` The ID of the memory to update (`mem_...`). #### Query parameters - `view: optional BetaManagedAgentsMemoryView` 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. - `"basic"` Return the object with `content` set to `null`. The `content_size_bytes` and `content_sha256` fields remain populated, so sync clients can diff without fetching content. - `"full"` Return the object with `content` populated. On list endpoints, `view=full` caps `limit` at 20. #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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. #### Body parameters - `content: optional string or null` New UTF-8 text content for the memory. Maximum 100 kB (102,400 bytes). Omit to leave the content unchanged (e.g., for a rename-only update). - `path: optional string or null` New path for the memory (a rename). Must start with `/`, contain at least one non-empty segment, and be at most 1,024 bytes. Must not contain empty segments, `.` or `..` segments, control or format characters, or the Unicode line and paragraph separators (U+2028, U+2029), and must be NFC-normalized. Paths are case-sensitive. The memory's `id` is preserved across renames. Omit to leave the path unchanged. minLength: 2, maxLength: 1024 - `precondition: optional BetaManagedAgentsPrecondition` Optional optimistic-concurrency precondition. When supplied, the update applies only if the memory's current state matches; on mismatch the request returns `memory_precondition_failed_error` (HTTP 409). When omitted, the update is unconditional. - `type: "content_sha256"` - `content_sha256: optional string` Expected `content_sha256` of the stored memory (64 lowercase hexadecimal characters). Typically the `content_sha256` returned by a prior read or list call. Because the server applies no content normalization, clients can also compute this locally as the SHA-256 of the UTF-8 content bytes. #### Returns - `BetaManagedAgentsMemory object` A `memory` object: a single text document at a hierarchical path inside a memory store. The `content` field is populated when `view=full` and `null` when `view=basic`; the `content_size_bytes` and `content_sha256` fields are always populated so sync clients can diff without fetching content. Memories are addressed by their `mem_...` ID; the path is the create key and can be changed via update. - `type: "memory"` - `id: string` Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory. - `content_sha256: string` Lowercase hex SHA-256 digest of the UTF-8 `content` bytes (64 characters). The server applies no normalization, so clients can compute the same hash locally for staleness checks and as the value for a `content_sha256` precondition on update. Always populated, regardless of `view`. - `content_size_bytes: number` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: string` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: string` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: string` ID of the `memory_version` representing this memory's current content (a `memver_...` value). This is the authoritative head pointer; `memory_version` objects do not carry an `is_latest` flag, so compare against this field instead. Enumerate the history via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). - `path: string` Hierarchical path of the memory within the store, e.g. `/projects/foo/notes.md`. Always starts with `/`. Paths are case-sensitive and unique within a store. Maximum 1,024 bytes. - `updated_at: string` When this memory was last modified, in RFC 3339 format. Use this as a cheap freshness signal; for who made the change, look up the head version's `created_by` via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http). format: date-time - `content: optional string or null` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). #### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memories/$MEMORY_ID \ -H 'Content-Type: application/json' \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" \ -d '{}' ``` ##### Response (200) ```json { "id": "id", "content_sha256": "content_sha256", "content_size_bytes": 0, "created_at": "2019-12-27T18:11:19.117Z", "memory_store_id": "memory_store_id", "memory_version_id": "memory_version_id", "path": "path", "type": "memory", "updated_at": "2019-12-27T18:11:19.117Z", "content": "content" } ``` ### Delete a memory **DELETE** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}` Delete a memory #### Path parameters - `memory_store_id: string` The ID of the memory store that holds the memory (`memstore_...`). - `memory_id: string` The ID of the memory to delete (`mem_...`). #### Query parameters - `expected_content_sha256: optional string` Delete the memory only if its current `content_sha256` equals this value, given as 64 lowercase hexadecimal characters. Omit it to delete unconditionally. If the hashes differ, the request fails with HTTP status 409 and nothing is deleted. #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `BetaManagedAgentsDeletedMemory object` Tombstone returned by [Delete a memory](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/delete?sdk_languages=http). Deleting a memory does not erase its version history: its versions remain listable via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http) while they are retained (each version is kept for at least the version retention period after it was written, unless the store itself is deleted). - `type: "memory_deleted"` - `id: string` ID of the deleted memory (a `mem_...` value). #### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memories/$MEMORY_ID \ -X DELETE \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` ##### Response (200) ```json { "id": "id", "type": "memory_deleted" } ``` ## Memory Stores › Memory Versions ### List memory versions **GET** `/v1/memory_stores/{memory_store_id}/memory_versions` List memory versions #### Path parameters - `memory_store_id: string` The ID of the memory store whose version history to list (`memstore_...`). #### Query parameters - `api_key_id: optional string` Return only versions written with the API key that has this ID. - `"created_at[gte]": optional string` Return versions created at or after this time (inclusive). format: date-time - `"created_at[lte]": optional string` Return versions created at or before this time (inclusive). format: date-time - `limit: optional number` The maximum number of versions to return per page. Defaults to 20. format: int32 - `memory_id: optional string` 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`. - `operation: optional BetaManagedAgentsMemoryVersionOperation` Return only versions that record this kind of change. - `"created"` The memory was created. The first version in any memory's lineage. - `"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"` 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. - `page: optional string` The `next_page` value from a previous response, to get the next page. Omit it to get the first page. - `service_account_id: optional string` Return only versions written by the service account with this ID (`svac_...`). - `session_id: optional string` Return only versions written by the session with this ID. - `view: optional BetaManagedAgentsMemoryView` 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. - `"basic"` Return the object with `content` set to `null`. The `content_size_bytes` and `content_sha256` fields remain populated, so sync clients can diff without fetching content. - `"full"` Return the object with `content` populated. On list endpoints, `view=full` caps `limit` at 20. #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `data: optional array of BetaManagedAgentsMemoryVersion` One page of `memory_version` objects, ordered by `created_at` descending (newest first), with `id` as tiebreak. - `type: "memory_version"` - `id: string` Unique identifier for this version (a `memver_...` value). - `created_at: string` When this version was written, in RFC 3339 format. format: date-time - `memory_id: string` 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=http) to retrieve the memory's retained versions, including the `deleted` row while the lineage is retained. - `memory_store_id: string` ID of the memory store this version belongs to (a `memstore_...` value). - `operation: BetaManagedAgentsMemoryVersionOperation` The kind of mutation this version records: `created`, `modified`, or `deleted`. - `"created"` The memory was created. The first version in any memory's lineage. - `"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"` 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. - `content: optional string or null` 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. - `content_sha256: optional string or null` 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. - `content_size_bytes: optional number or null` 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 - `created_by: optional BetaManagedAgentsActor` 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=http). - `BetaManagedAgentsSessionActor object` 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: "session_actor"` - `session_id: string` 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=http) for further provenance. minLength: 1 - `BetaManagedAgentsAPIActor object` A direct caller of the public API, identified by the API key that authenticated the request. - `type: "api_actor"` - `api_key_id: string` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `BetaManagedAgentsUserActor object` A human user, for example acting through the Anthropic Console. - `type: "user_actor"` - `user_id: string` ID of the user (a `user_...` value). minLength: 1 - `BetaManagedAgentsServiceAccountActor object` A workload authenticated as a service account, for example via Workload Identity Federation. - `type: "service_account_actor"` - `service_account_id: string` ID of the service account (a `svac_...` value). minLength: 1 - `path: optional string or null` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `redacted_at: optional string or null` 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=http). format: date-time - `redacted_by: optional BetaManagedAgentsActor` 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). - `next_page: optional string or null` Opaque cursor for the next page (a `page_...` value), or `null` if there are no more results. Pass as `page` on the next request. #### Example ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memory_versions \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` ##### 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 **GET** `/v1/memory_stores/{memory_store_id}/memory_versions/{memory_version_id}` Retrieve a memory version #### Path parameters - `memory_store_id: string` The ID of the memory store that holds the version (`memstore_...`). - `memory_version_id: string` The ID of the memory version to retrieve (`memver_...`). #### Query parameters - `view: optional BetaManagedAgentsMemoryView` 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. - `"basic"` Return the object with `content` set to `null`. The `content_size_bytes` and `content_sha256` fields remain populated, so sync clients can diff without fetching content. - `"full"` Return the object with `content` populated. On list endpoints, `view=full` caps `limit` at 20. #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `BetaManagedAgentsMemoryVersion object` 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: "memory_version"` - `id: string` Unique identifier for this version (a `memver_...` value). - `created_at: string` When this version was written, in RFC 3339 format. format: date-time - `memory_id: string` 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=http) to retrieve the memory's retained versions, including the `deleted` row while the lineage is retained. - `memory_store_id: string` ID of the memory store this version belongs to (a `memstore_...` value). - `operation: BetaManagedAgentsMemoryVersionOperation` The kind of mutation this version records: `created`, `modified`, or `deleted`. - `"created"` The memory was created. The first version in any memory's lineage. - `"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"` 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. - `content: optional string or null` 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. - `content_sha256: optional string or null` 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. - `content_size_bytes: optional number or null` 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 - `created_by: optional BetaManagedAgentsActor` 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=http). - `BetaManagedAgentsSessionActor object` 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: "session_actor"` - `session_id: string` 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=http) for further provenance. minLength: 1 - `BetaManagedAgentsAPIActor object` A direct caller of the public API, identified by the API key that authenticated the request. - `type: "api_actor"` - `api_key_id: string` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `BetaManagedAgentsUserActor object` A human user, for example acting through the Anthropic Console. - `type: "user_actor"` - `user_id: string` ID of the user (a `user_...` value). minLength: 1 - `BetaManagedAgentsServiceAccountActor object` A workload authenticated as a service account, for example via Workload Identity Federation. - `type: "service_account_actor"` - `service_account_id: string` ID of the service account (a `svac_...` value). minLength: 1 - `path: optional string or null` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `redacted_at: optional string or null` 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=http). format: date-time - `redacted_by: optional BetaManagedAgentsActor` 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 ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memory_versions/$MEMORY_VERSION_ID \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` ##### 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 **POST** `/v1/memory_stores/{memory_store_id}/memory_versions/{memory_version_id}/redact` Redact a memory version #### Path parameters - `memory_store_id: string` The ID of the memory store that holds the version (`memstore_...`). - `memory_version_id: string` The ID of the memory version to redact (`memver_...`). #### Headers - `"anthropic-version": optional string` The version of the Claude API you want to use. Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http). - `"anthropic-beta": optional array of AnthropicBeta` This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header. - `string` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `"telemetry-destinations-2026-08-11"` - `"anthropic-workspace-id": optional string` 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 - `BetaManagedAgentsMemoryVersion object` 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: "memory_version"` - `id: string` Unique identifier for this version (a `memver_...` value). - `created_at: string` When this version was written, in RFC 3339 format. format: date-time - `memory_id: string` 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=http) to retrieve the memory's retained versions, including the `deleted` row while the lineage is retained. - `memory_store_id: string` ID of the memory store this version belongs to (a `memstore_...` value). - `operation: BetaManagedAgentsMemoryVersionOperation` The kind of mutation this version records: `created`, `modified`, or `deleted`. - `"created"` The memory was created. The first version in any memory's lineage. - `"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"` 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. - `content: optional string or null` 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. - `content_sha256: optional string or null` 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. - `content_size_bytes: optional number or null` 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 - `created_by: optional BetaManagedAgentsActor` 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=http). - `BetaManagedAgentsSessionActor object` 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: "session_actor"` - `session_id: string` 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=http) for further provenance. minLength: 1 - `BetaManagedAgentsAPIActor object` A direct caller of the public API, identified by the API key that authenticated the request. - `type: "api_actor"` - `api_key_id: string` ID of the API key (an `apikey_...` value). This identifies the key, not the secret. minLength: 1 - `BetaManagedAgentsUserActor object` A human user, for example acting through the Anthropic Console. - `type: "user_actor"` - `user_id: string` ID of the user (a `user_...` value). minLength: 1 - `BetaManagedAgentsServiceAccountActor object` A workload authenticated as a service account, for example via Workload Identity Federation. - `type: "service_account_actor"` - `service_account_id: string` ID of the service account (a `svac_...` value). minLength: 1 - `path: optional string or null` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `redacted_at: optional string or null` 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=http). format: date-time - `redacted_by: optional BetaManagedAgentsActor` 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 ```bash curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memory_versions/$MEMORY_VERSION_ID/redact \ -X POST \ -H 'anthropic-version: 2023-06-01' \ -H 'anthropic-beta: agent-memory-2026-07-22' \ -H "X-Api-Key: $ANTHROPIC_API_KEY" ``` ##### 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" } } ```