--- title: Memories url: https://platform.claude.com/docs/en/api/python/beta/memory_stores/memories --- # Memories ## Create a memory `beta.memory_stores.memories.create(memory_store_id, **kwargs) -> BetaManagedAgentsMemory` **POST** `/v1/memory_stores/{memory_store_id}/memories` Create a memory ### Parameters - `memory_store_id: str` (path parameter) The ID of the memory store to create the memory in (`memstore_...`). - `content: Optional[str]` UTF-8 text content for the new memory. Maximum 100 kB (102,400 bytes). Required; pass `""` explicitly to create an empty memory. - `path: str` 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 - `view: Optional[BetaManagedAgentsMemoryView]` (query parameter) Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20. - `"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. - `betas: Optional[List[AnthropicBetaParam]]` (header parameter) Optional header to specify the beta version(s) you want to use. - `str` - `"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"` - `workspace_id: Optional[str]` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `class BetaManagedAgentsMemory` 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: Literal["memory"]` - `id: str` 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: str` 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: int` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: datetime` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: str` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: str` 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=python). - `path: str` 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: datetime` 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=python). format: date-time - `content: Optional[str]` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). ### Example ```python import os from anthropic import Anthropic client = Anthropic( api_key=os.environ.get( "ANTHROPIC_API_KEY" ), # This is the default and can be omitted ) beta_managed_agents_memory = client.beta.memory_stores.memories.create( memory_store_id="memory_store_id", content="content", path="xx", ) print(beta_managed_agents_memory.id) ``` #### 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 `beta.memory_stores.memories.list(memory_store_id, **kwargs) -> SyncPageCursor[BetaManagedAgentsMemoryListItem]` **GET** `/v1/memory_stores/{memory_store_id}/memories` List memories ### Parameters - `memory_store_id: str` (path parameter) The ID of the memory store to list memories from (`memstore_...`). - `depth: Optional[int]` (query parameter) `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[int]` (query parameter) 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[str]` (query parameter) 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[str]` (query parameter) 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]` (query parameter) 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. - `betas: Optional[List[AnthropicBetaParam]]` (header parameter) Optional header to specify the beta version(s) you want to use. - `str` - `"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"` - `workspace_id: Optional[str]` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `type BetaManagedAgentsMemoryListItem = ...` One item in a [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=python) response: either a `memory` object or, when `depth` is set, a `memory_prefix` rollup marker. - `class BetaManagedAgentsMemory` 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: Literal["memory"]` - `id: str` 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: str` 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: int` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: datetime` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: str` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: str` 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=python). - `path: str` 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: datetime` 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=python). format: date-time - `content: Optional[str]` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). - `class BetaManagedAgentsMemoryPrefix` A rolled-up directory marker returned by [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=python) 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: Literal["memory_prefix"]` - `path: str` 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. ### Example ```python import os from anthropic import Anthropic client = Anthropic( api_key=os.environ.get( "ANTHROPIC_API_KEY" ), # This is the default and can be omitted ) page = client.beta.memory_stores.memories.list( memory_store_id="memory_store_id", ) page = page.data[0] print(page) ``` #### 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 `beta.memory_stores.memories.retrieve(memory_id, **kwargs) -> BetaManagedAgentsMemory` **GET** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}` Retrieve a memory ### Parameters - `memory_store_id: str` (path parameter) The ID of the memory store that holds the memory (`memstore_...`). - `memory_id: str` (path parameter) The ID of the memory to retrieve (`mem_...`). - `view: Optional[BetaManagedAgentsMemoryView]` (query parameter) Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20. - `"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. - `betas: Optional[List[AnthropicBetaParam]]` (header parameter) Optional header to specify the beta version(s) you want to use. - `str` - `"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"` - `workspace_id: Optional[str]` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `class BetaManagedAgentsMemory` 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: Literal["memory"]` - `id: str` 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: str` 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: int` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: datetime` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: str` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: str` 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=python). - `path: str` 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: datetime` 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=python). format: date-time - `content: Optional[str]` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). ### Example ```python import os from anthropic import Anthropic client = Anthropic( api_key=os.environ.get( "ANTHROPIC_API_KEY" ), # This is the default and can be omitted ) beta_managed_agents_memory = client.beta.memory_stores.memories.retrieve( memory_id="memory_id", memory_store_id="memory_store_id", ) print(beta_managed_agents_memory.id) ``` #### 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 `beta.memory_stores.memories.update(memory_id, **kwargs) -> BetaManagedAgentsMemory` **POST** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}` Update a memory ### Parameters - `memory_store_id: str` (path parameter) The ID of the memory store that holds the memory (`memstore_...`). - `memory_id: str` (path parameter) The ID of the memory to update (`mem_...`). - `view: Optional[BetaManagedAgentsMemoryView]` (query parameter) Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20. - `"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. - `content: Optional[str]` 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[str]` 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[BetaManagedAgentsPreconditionParam]` 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: Literal["content_sha256"]` - `content_sha256: Optional[str]` 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. - `betas: Optional[List[AnthropicBetaParam]]` (header parameter) Optional header to specify the beta version(s) you want to use. - `str` - `"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"` - `workspace_id: Optional[str]` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `class BetaManagedAgentsMemory` 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: Literal["memory"]` - `id: str` 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: str` 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: int` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: datetime` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: str` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: str` 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=python). - `path: str` 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: datetime` 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=python). format: date-time - `content: Optional[str]` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). ### Example ```python import os from anthropic import Anthropic client = Anthropic( api_key=os.environ.get( "ANTHROPIC_API_KEY" ), # This is the default and can be omitted ) beta_managed_agents_memory = client.beta.memory_stores.memories.update( memory_id="memory_id", memory_store_id="memory_store_id", ) print(beta_managed_agents_memory.id) ``` #### 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 `beta.memory_stores.memories.delete(memory_id, **kwargs) -> BetaManagedAgentsDeletedMemory` **DELETE** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}` Delete a memory ### Parameters - `memory_store_id: str` (path parameter) The ID of the memory store that holds the memory (`memstore_...`). - `memory_id: str` (path parameter) The ID of the memory to delete (`mem_...`). - `expected_content_sha256: Optional[str]` (query parameter) 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. - `betas: Optional[List[AnthropicBetaParam]]` (header parameter) Optional header to specify the beta version(s) you want to use. - `str` - `"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"` - `workspace_id: Optional[str]` (header parameter) Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`). Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace. ### Returns - `class BetaManagedAgentsDeletedMemory` Tombstone returned by [Delete a memory](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/delete?sdk_languages=python). 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=python) 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: Literal["memory_deleted"]` - `id: str` ID of the deleted memory (a `mem_...` value). ### Example ```python import os from anthropic import Anthropic client = Anthropic( api_key=os.environ.get( "ANTHROPIC_API_KEY" ), # This is the default and can be omitted ) beta_managed_agents_deleted_memory = client.beta.memory_stores.memories.delete( memory_id="memory_id", memory_store_id="memory_store_id", ) print(beta_managed_agents_deleted_memory.id) ``` #### Response (200) ```json { "id": "id", "type": "memory_deleted" } ``` ## Domain types ### Beta Managed Agents Conflict Error - `class BetaManagedAgentsConflictError` - `type: Literal["conflict_error"]` - `message: Optional[str]` ### Beta Managed Agents Content Sha256 Precondition - `class BetaManagedAgentsContentSha256Precondition` Optimistic-concurrency precondition: the update applies only if the memory's stored `content_sha256` equals the supplied value. On mismatch, the request returns `memory_precondition_failed_error` (HTTP 409); re-read the memory and retry against the fresh state. If the precondition fails but the stored state already exactly matches the requested `content` and `path`, the server returns 200 instead of 409. - `type: Literal["content_sha256"]` - `content_sha256: Optional[str]` 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. ### Beta Managed Agents Deleted Memory - `class BetaManagedAgentsDeletedMemory` Tombstone returned by [Delete a memory](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/delete?sdk_languages=python). 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=python) 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: Literal["memory_deleted"]` - `id: str` ID of the deleted memory (a `mem_...` value). ### Beta Managed Agents Error - `type BetaManagedAgentsError = ...` - `class BetaInvalidRequestError` - `type: Literal["invalid_request_error"]` default: invalid_request_error - `message: str` default: Invalid request - `class BetaAuthenticationError` - `type: Literal["authentication_error"]` default: authentication_error - `message: str` default: Authentication error - `class BetaBillingError` - `type: Literal["billing_error"]` default: billing_error - `message: str` default: Billing error - `class BetaPermissionError` - `type: Literal["permission_error"]` default: permission_error - `message: str` default: Permission denied - `class BetaNotFoundError` - `type: Literal["not_found_error"]` default: not_found_error - `message: str` default: Not found - `class BetaRateLimitError` - `type: Literal["rate_limit_error"]` default: rate_limit_error - `message: str` default: Rate limited - `class BetaGatewayTimeoutError` - `type: Literal["timeout_error"]` default: timeout_error - `message: str` default: Request timeout - `class BetaAPIError` - `type: Literal["api_error"]` default: api_error - `message: str` default: Internal server error - `class BetaOverloadedError` - `type: Literal["overloaded_error"]` default: overloaded_error - `message: str` default: Overloaded - `class BetaManagedAgentsMemoryPreconditionFailedError` The error returned with HTTP status 409 when a request's precondition doesn't hold for the memory's current state, such as `precondition` on an update or `expected_content_sha256` on a delete. The error doesn't include the memory's current state. Retrieve the memory to see its current content and `content_sha256` before you retry. See the [memory guide](https://platform.claude.com/docs/en/managed-agents/memory?sdk_languages=python#safe-content-edits-optimistic-concurrency) to learn more about safe content edits with content hash preconditions. - `type: Literal["memory_precondition_failed_error"]` - `message: Optional[str]` A human-readable explanation of why the precondition failed. - `class BetaManagedAgentsMemoryPathConflictError` The error returned with HTTP status 409 when a create or rename targets a path that another memory uses, or a path that overlaps another memory's path. Two paths overlap when one is an ancestor of the other, such as `/notes` and `/notes/todo.md`. To free the path, rename or delete the memory that `conflicting_memory_id` references, then retry. To change that memory instead of creating a new one, update it. - `type: Literal["memory_path_conflict_error"]` - `conflicting_memory_id: Optional[str]` The ID of the memory that blocked the write (`mem_...`), or an empty string if that memory can't be identified. Retry the request when it is empty. - `conflicting_path: Optional[str]` The path that blocked the write: the requested path, or the path of a memory that is an ancestor or descendant of it. - `message: Optional[str]` A human-readable explanation of the conflict. To handle the error in code, use `conflicting_path` and `conflicting_memory_id` instead. - `class BetaManagedAgentsConflictError` - `type: Literal["conflict_error"]` - `message: Optional[str]` ### Beta Managed Agents Memory - `class BetaManagedAgentsMemory` 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: Literal["memory"]` - `id: str` 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: str` 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: int` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: datetime` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: str` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: str` 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=python). - `path: str` 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: datetime` 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=python). format: date-time - `content: Optional[str]` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). ### Beta Managed Agents Memory List Item - `type BetaManagedAgentsMemoryListItem = ...` One item in a [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=python) response: either a `memory` object or, when `depth` is set, a `memory_prefix` rollup marker. - `class BetaManagedAgentsMemory` 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: Literal["memory"]` - `id: str` 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: str` 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: int` Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`. format: int32 - `created_at: datetime` When this memory was created, in RFC 3339 format. format: date-time - `memory_store_id: str` ID of the memory store this memory belongs to (a `memstore_...` value). - `memory_version_id: str` 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=python). - `path: str` 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: datetime` 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=python). format: date-time - `content: Optional[str]` The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes). - `class BetaManagedAgentsMemoryPrefix` A rolled-up directory marker returned by [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=python) 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: Literal["memory_prefix"]` - `path: str` 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. ### Beta Managed Agents Memory Path Conflict Error - `class BetaManagedAgentsMemoryPathConflictError` The error returned with HTTP status 409 when a create or rename targets a path that another memory uses, or a path that overlaps another memory's path. Two paths overlap when one is an ancestor of the other, such as `/notes` and `/notes/todo.md`. To free the path, rename or delete the memory that `conflicting_memory_id` references, then retry. To change that memory instead of creating a new one, update it. - `type: Literal["memory_path_conflict_error"]` - `conflicting_memory_id: Optional[str]` The ID of the memory that blocked the write (`mem_...`), or an empty string if that memory can't be identified. Retry the request when it is empty. - `conflicting_path: Optional[str]` The path that blocked the write: the requested path, or the path of a memory that is an ancestor or descendant of it. - `message: Optional[str]` A human-readable explanation of the conflict. To handle the error in code, use `conflicting_path` and `conflicting_memory_id` instead. ### Beta Managed Agents Memory Precondition Failed Error - `class BetaManagedAgentsMemoryPreconditionFailedError` The error returned with HTTP status 409 when a request's precondition doesn't hold for the memory's current state, such as `precondition` on an update or `expected_content_sha256` on a delete. The error doesn't include the memory's current state. Retrieve the memory to see its current content and `content_sha256` before you retry. See the [memory guide](https://platform.claude.com/docs/en/managed-agents/memory?sdk_languages=python#safe-content-edits-optimistic-concurrency) to learn more about safe content edits with content hash preconditions. - `type: Literal["memory_precondition_failed_error"]` - `message: Optional[str]` A human-readable explanation of why the precondition failed. ### Beta Managed Agents Memory Prefix - `class BetaManagedAgentsMemoryPrefix` A rolled-up directory marker returned by [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=python) 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: Literal["memory_prefix"]` - `path: str` 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. ### Beta Managed Agents Memory View - `type BetaManagedAgentsMemoryView = Literal["basic", "full"]` 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. ### Beta Managed Agents Precondition - `class BetaManagedAgentsPreconditionParam` Optional condition that must hold for an update to apply. When omitted, the update is unconditional. Asserts the current state of the memory being updated. When an update changes `path`, the precondition still refers to the memory's current content, not the destination path. Currently the only supported variant is `content_sha256`. - `type: Literal["content_sha256"]` - `content_sha256: Optional[str]` 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.