--- title: Retrieve a memory version url: https://platform.claude.com/docs/en/api/cli/beta/memory_stores/memory_versions/retrieve --- # Retrieve a memory version `$ ant beta:memory-stores:memory-versions retrieve` **GET** `/v1/memory_stores/{memory_store_id}/memory_versions/{memory_version_id}` Retrieve a memory version ## Parameters - `--memory-store-id: string` (path parameter) The ID of the memory store that holds the version (`memstore_...`). - `--memory-version-id: string` (path parameter) The ID of the memory version to retrieve (`memver_...`). - `--view: optional "basic" or "full"` (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. - `--beta: optional array of AnthropicBeta` (header parameter) Optional header to specify the beta version(s) you want to use. - `--workspace-id: optional string` (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 - `beta_managed_agents_memory_version: 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=cli) 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: "created" or "modified" or "deleted"` 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` 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` 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` 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 BetaManagedAgentsSessionActor or BetaManagedAgentsAPIActor or BetaManagedAgentsUserActor or BetaManagedAgentsServiceAccountActor` 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=cli). - `beta_managed_agents_session_actor: 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=cli) for further provenance. minLength: 1 - `beta_managed_agents_api_actor: 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 - `beta_managed_agents_user_actor: 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 - `beta_managed_agents_service_account_actor: 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` The memory's path at the time of this write. `null` if and only if `redacted_at` is set. - `redacted_at: optional string` 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=cli). format: date-time - `redacted_by: optional BetaManagedAgentsSessionActor or BetaManagedAgentsAPIActor or BetaManagedAgentsUserActor or BetaManagedAgentsServiceAccountActor` Who redacted this version, or `null` if it has not been redacted. In practice always an `api_actor`, `user_actor`, or `service_account_actor` (agents do not have a redact capability). - `beta_managed_agents_session_actor: 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. - `beta_managed_agents_api_actor: object` A direct caller of the public API, identified by the API key that authenticated the request. - `beta_managed_agents_user_actor: object` A human user, for example acting through the Anthropic Console. - `beta_managed_agents_service_account_actor: object` A workload authenticated as a service account, for example via Workload Identity Federation. ## Example ```bash ant beta:memory-stores:memory-versions retrieve \ --api-key my-anthropic-api-key \ --memory-store-id memory_store_id \ --memory-version-id memory_version_id ``` ### 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" } } ```