---
title: Memories
url: https://platform.claude.com/docs/en/api/java/beta/memory_stores/memories
---

# Memories

## Create a memory

`BetaManagedAgentsMemory beta().memoryStores().memories().create(params, requestOptions = RequestOptions.none())`

**POST** `/v1/memory_stores/{memory_store_id}/memories`

Create a memory

### Parameters

- `MemoryCreateParams params`

  - `Optional<String> memoryStoreId` (path parameter)

    The ID of the memory store to create the memory in (`memstore_...`).

  - `Optional<BetaManagedAgentsMemoryView> view` (query parameter)

    Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20.

  - `Optional<List<AnthropicBeta>> betas` (header parameter)

    This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header.

    - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")`

    - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")`

    - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")`

    - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")`

    - `PDFS_2024_09_25("pdfs-2024-09-25")`

    - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")`

    - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")`

    - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")`

    - `FILES_API_2025_04_14("files-api-2025-04-14")`

    - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")`

    - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")`

    - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")`

    - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")`

    - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")`

    - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")`

    - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")`

    - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")`

    - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")`

    - `SKILLS_2025_10_02("skills-2025-10-02")`

    - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")`

    - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")`

    - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")`

    - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")`

    - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")`

    - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")`

    - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")`

    - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")`

    - `DREAMING_2026_04_21("dreaming-2026-04-21")`

    - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")`

    - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")`

    - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")`

    - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")`

    - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")`

    - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")`

    - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")`

    - `COMPACT_2026_01_12("compact-2026-01-12")`

    - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")`

    - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")`

    - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")`

    - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")`

    - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")`

    - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")`

    - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")`

    - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")`

    - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")`

    - `COMPACT_2026_09_04("compact-2026-09-04")`

    - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")`

    - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")`

    - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")`

    - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")`

    - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")`

  - `Optional<String> workspaceId` (header parameter)

    Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

    Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

  - `Optional<String> content`

    UTF-8 text content for the new memory. Maximum 100 kB (102,400 bytes). Required; pass `""` explicitly to create an empty memory.

  - `String path`

    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

- `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 type`

  - `String id`

    Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory.

  - `String contentSha256`

    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`.

  - `long contentSizeBytes`

    Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`.

    format: int32

  - `LocalDateTime createdAt`

    When this memory was created, in RFC 3339 format.

    format: date-time

  - `String memoryStoreId`

    ID of the memory store this memory belongs to (a `memstore_...` value).

  - `String memoryVersionId`

    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=java).

  - `String path`

    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.

  - `LocalDateTime updatedAt`

    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=java).

    format: date-time

  - `Optional<String> content`

    The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes).

### Example

```java
package com.anthropic.example;

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.beta.memorystores.memories.BetaManagedAgentsMemory;
import com.anthropic.models.beta.memorystores.memories.MemoryCreateParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        AnthropicClient client = AnthropicOkHttpClient.fromEnv();

        MemoryCreateParams params = MemoryCreateParams.builder()
            .memoryStoreId("memory_store_id")
            .content("content")
            .path("xx")
            .build();
        BetaManagedAgentsMemory betaManagedAgentsMemory = client.beta().memoryStores().memories().create(params);
    }
}
```

#### 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

`MemoryListPage beta().memoryStores().memories().list(params = MemoryListParams.none(), requestOptions = RequestOptions.none())`

**GET** `/v1/memory_stores/{memory_store_id}/memories`

List memories

### Parameters

- `MemoryListParams params`

  - `Optional<String> memoryStoreId` (path parameter)

    The ID of the memory store to list memories from (`memstore_...`).

  - `Optional<Long> depth` (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

  - `Optional<Long> limit` (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

  - `Optional<String> page` (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.

  - `Optional<String> pathPrefix` (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.

  - `Optional<BetaManagedAgentsMemoryView> view` (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.

  - `Optional<List<AnthropicBeta>> betas` (header parameter)

    This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header.

    - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")`

    - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")`

    - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")`

    - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")`

    - `PDFS_2024_09_25("pdfs-2024-09-25")`

    - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")`

    - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")`

    - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")`

    - `FILES_API_2025_04_14("files-api-2025-04-14")`

    - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")`

    - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")`

    - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")`

    - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")`

    - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")`

    - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")`

    - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")`

    - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")`

    - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")`

    - `SKILLS_2025_10_02("skills-2025-10-02")`

    - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")`

    - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")`

    - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")`

    - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")`

    - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")`

    - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")`

    - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")`

    - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")`

    - `DREAMING_2026_04_21("dreaming-2026-04-21")`

    - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")`

    - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")`

    - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")`

    - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")`

    - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")`

    - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")`

    - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")`

    - `COMPACT_2026_01_12("compact-2026-01-12")`

    - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")`

    - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")`

    - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")`

    - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")`

    - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")`

    - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")`

    - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")`

    - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")`

    - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")`

    - `COMPACT_2026_09_04("compact-2026-09-04")`

    - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")`

    - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")`

    - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")`

    - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")`

    - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")`

  - `Optional<String> workspaceId` (header parameter)

    Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

    Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `class BetaManagedAgentsMemoryListItem: union`

  One item in a [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=java) 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 type`

    - `String id`

      Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory.

    - `String contentSha256`

      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`.

    - `long contentSizeBytes`

      Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`.

      format: int32

    - `LocalDateTime createdAt`

      When this memory was created, in RFC 3339 format.

      format: date-time

    - `String memoryStoreId`

      ID of the memory store this memory belongs to (a `memstore_...` value).

    - `String memoryVersionId`

      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=java).

    - `String path`

      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.

    - `LocalDateTime updatedAt`

      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=java).

      format: date-time

    - `Optional<String> content`

      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=java) 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 type`

    - `String path`

      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

```java
package com.anthropic.example;

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.beta.memorystores.memories.MemoryListPage;
import com.anthropic.models.beta.memorystores.memories.MemoryListParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        AnthropicClient client = AnthropicOkHttpClient.fromEnv();

        MemoryListPage page = client.beta().memoryStores().memories().list("memory_store_id");
    }
}
```

#### 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

`BetaManagedAgentsMemory beta().memoryStores().memories().retrieve(params, requestOptions = RequestOptions.none())`

**GET** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}`

Retrieve a memory

### Parameters

- `MemoryRetrieveParams params`

  - `String memoryStoreId` (path parameter)

    The ID of the memory store that holds the memory (`memstore_...`).

  - `Optional<String> memoryId` (path parameter)

    The ID of the memory to retrieve (`mem_...`).

  - `Optional<BetaManagedAgentsMemoryView> view` (query parameter)

    Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20.

  - `Optional<List<AnthropicBeta>> betas` (header parameter)

    This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header.

    - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")`

    - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")`

    - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")`

    - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")`

    - `PDFS_2024_09_25("pdfs-2024-09-25")`

    - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")`

    - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")`

    - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")`

    - `FILES_API_2025_04_14("files-api-2025-04-14")`

    - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")`

    - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")`

    - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")`

    - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")`

    - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")`

    - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")`

    - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")`

    - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")`

    - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")`

    - `SKILLS_2025_10_02("skills-2025-10-02")`

    - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")`

    - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")`

    - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")`

    - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")`

    - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")`

    - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")`

    - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")`

    - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")`

    - `DREAMING_2026_04_21("dreaming-2026-04-21")`

    - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")`

    - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")`

    - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")`

    - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")`

    - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")`

    - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")`

    - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")`

    - `COMPACT_2026_01_12("compact-2026-01-12")`

    - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")`

    - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")`

    - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")`

    - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")`

    - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")`

    - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")`

    - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")`

    - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")`

    - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")`

    - `COMPACT_2026_09_04("compact-2026-09-04")`

    - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")`

    - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")`

    - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")`

    - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")`

    - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")`

  - `Optional<String> workspaceId` (header parameter)

    Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

    Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `class 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 type`

  - `String id`

    Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory.

  - `String contentSha256`

    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`.

  - `long contentSizeBytes`

    Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`.

    format: int32

  - `LocalDateTime createdAt`

    When this memory was created, in RFC 3339 format.

    format: date-time

  - `String memoryStoreId`

    ID of the memory store this memory belongs to (a `memstore_...` value).

  - `String memoryVersionId`

    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=java).

  - `String path`

    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.

  - `LocalDateTime updatedAt`

    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=java).

    format: date-time

  - `Optional<String> content`

    The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes).

### Example

```java
package com.anthropic.example;

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.beta.memorystores.memories.BetaManagedAgentsMemory;
import com.anthropic.models.beta.memorystores.memories.MemoryRetrieveParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        AnthropicClient client = AnthropicOkHttpClient.fromEnv();

        MemoryRetrieveParams params = MemoryRetrieveParams.builder()
            .memoryStoreId("memory_store_id")
            .memoryId("memory_id")
            .build();
        BetaManagedAgentsMemory betaManagedAgentsMemory = client.beta().memoryStores().memories().retrieve(params);
    }
}
```

#### 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

`BetaManagedAgentsMemory beta().memoryStores().memories().update(params, requestOptions = RequestOptions.none())`

**POST** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}`

Update a memory

### Parameters

- `MemoryUpdateParams params`

  - `String memoryStoreId` (path parameter)

    The ID of the memory store that holds the memory (`memstore_...`).

  - `Optional<String> memoryId` (path parameter)

    The ID of the memory to update (`mem_...`).

  - `Optional<BetaManagedAgentsMemoryView> view` (query parameter)

    Selects which projection of a `memory` or `memory_version` the server returns. `basic` returns the object with `content` set to `null`; `full` populates `content`. When omitted, the default is endpoint-specific: retrieve operations default to `full`; list, create, and update operations default to `basic`. Listing with `view=full` caps `limit` at 20.

  - `Optional<List<AnthropicBeta>> betas` (header parameter)

    This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header.

    - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")`

    - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")`

    - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")`

    - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")`

    - `PDFS_2024_09_25("pdfs-2024-09-25")`

    - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")`

    - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")`

    - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")`

    - `FILES_API_2025_04_14("files-api-2025-04-14")`

    - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")`

    - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")`

    - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")`

    - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")`

    - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")`

    - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")`

    - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")`

    - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")`

    - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")`

    - `SKILLS_2025_10_02("skills-2025-10-02")`

    - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")`

    - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")`

    - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")`

    - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")`

    - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")`

    - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")`

    - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")`

    - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")`

    - `DREAMING_2026_04_21("dreaming-2026-04-21")`

    - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")`

    - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")`

    - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")`

    - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")`

    - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")`

    - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")`

    - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")`

    - `COMPACT_2026_01_12("compact-2026-01-12")`

    - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")`

    - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")`

    - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")`

    - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")`

    - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")`

    - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")`

    - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")`

    - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")`

    - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")`

    - `COMPACT_2026_09_04("compact-2026-09-04")`

    - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")`

    - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")`

    - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")`

    - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")`

    - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")`

  - `Optional<String> workspaceId` (header parameter)

    Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

    Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

  - `Optional<String> content`

    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).

  - `Optional<String> path`

    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

  - `Optional<BetaManagedAgentsPrecondition> precondition`

    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.

### 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 type`

  - `String id`

    Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory.

  - `String contentSha256`

    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`.

  - `long contentSizeBytes`

    Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`.

    format: int32

  - `LocalDateTime createdAt`

    When this memory was created, in RFC 3339 format.

    format: date-time

  - `String memoryStoreId`

    ID of the memory store this memory belongs to (a `memstore_...` value).

  - `String memoryVersionId`

    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=java).

  - `String path`

    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.

  - `LocalDateTime updatedAt`

    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=java).

    format: date-time

  - `Optional<String> content`

    The memory's UTF-8 text content. Populated when `view=full`; `null` when `view=basic`. Maximum 100 kB (102,400 bytes).

### Example

```java
package com.anthropic.example;

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.beta.memorystores.memories.BetaManagedAgentsMemory;
import com.anthropic.models.beta.memorystores.memories.MemoryUpdateParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        AnthropicClient client = AnthropicOkHttpClient.fromEnv();

        MemoryUpdateParams params = MemoryUpdateParams.builder()
            .memoryStoreId("memory_store_id")
            .memoryId("memory_id")
            .build();
        BetaManagedAgentsMemory betaManagedAgentsMemory = client.beta().memoryStores().memories().update(params);
    }
}
```

#### 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

`BetaManagedAgentsDeletedMemory beta().memoryStores().memories().delete(params, requestOptions = RequestOptions.none())`

**DELETE** `/v1/memory_stores/{memory_store_id}/memories/{memory_id}`

Delete a memory

### Parameters

- `MemoryDeleteParams params`

  - `String memoryStoreId` (path parameter)

    The ID of the memory store that holds the memory (`memstore_...`).

  - `Optional<String> memoryId` (path parameter)

    The ID of the memory to delete (`mem_...`).

  - `Optional<String> expectedContentSha256` (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.

  - `Optional<List<AnthropicBeta>> betas` (header parameter)

    This endpoint is in beta: requests must send `agent-memory-2026-07-22` or `managed-agents-2026-04-01` in this header.

    - `MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")`

    - `PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")`

    - `COMPUTER_USE_2024_10_22("computer-use-2024-10-22")`

    - `COMPUTER_USE_2025_01_24("computer-use-2025-01-24")`

    - `PDFS_2024_09_25("pdfs-2024-09-25")`

    - `TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")`

    - `TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")`

    - `OUTPUT_128K_2025_02_19("output-128k-2025-02-19")`

    - `FILES_API_2025_04_14("files-api-2025-04-14")`

    - `MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")`

    - `MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")`

    - `DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")`

    - `INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")`

    - `CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")`

    - `EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")`

    - `CONTEXT_1M_2025_08_07("context-1m-2025-08-07")`

    - `CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")`

    - `MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")`

    - `SKILLS_2025_10_02("skills-2025-10-02")`

    - `FAST_MODE_2026_02_01("fast-mode-2026-02-01")`

    - `OUTPUT_300K_2026_03_24("output-300k-2026-03-24")`

    - `USER_PROFILES_2026_03_24("user-profiles-2026-03-24")`

    - `USER_PROFILES_2026_08_18("user-profiles-2026-08-18")`

    - `USER_PROFILES_2026_09_04("user-profiles-2026-09-04")`

    - `ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")`

    - `MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")`

    - `CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")`

    - `DREAMING_2026_04_21("dreaming-2026-04-21")`

    - `THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")`

    - `SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")`

    - `SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")`

    - `FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")`

    - `FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")`

    - `AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")`

    - `MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")`

    - `COMPACT_2026_01_12("compact-2026-01-12")`

    - `COMPUTER_USE_2025_11_24("computer-use-2025-11-24")`

    - `MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")`

    - `STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")`

    - `TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")`

    - `THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")`

    - `CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")`

    - `MID_CONVERSATION_OUTPUT_CONFIG_2026_07_01("mid-conversation-output-config-2026-07-01")`

    - `THINKING_BINDING_CONTROLS_2026_08_01("thinking-binding-controls-2026-08-01")`

    - `MID_CONVERSATION_SYSTEM_CLEAR_AT_2026_08_21("mid-conversation-system-clear-at-2026-08-21")`

    - `COMPACT_2026_09_04("compact-2026-09-04")`

    - `INLINE_TOOLS_2026_09_15("inline-tools-2026-09-15")`

    - `MCP_CLIENT_2026_09_15("mcp-client-2026-09-15")`

    - `CE_PLUGINS_2026_09_01("ce-plugins-2026-09-01")`

    - `SPEND_LIMIT_READS_2026_09_26("spend-limit-reads-2026-09-26")`

    - `TELEMETRY_DESTINATIONS_2026_08_11("telemetry-destinations-2026-08-11")`

  - `Optional<String> workspaceId` (header parameter)

    Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

    Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `class BetaManagedAgentsDeletedMemory`

  Tombstone returned by [Delete a memory](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/delete?sdk_languages=java). 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=java) 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 type`

  - `String id`

    ID of the deleted memory (a `mem_...` value).

### Example

```java
package com.anthropic.example;

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.beta.memorystores.memories.BetaManagedAgentsDeletedMemory;
import com.anthropic.models.beta.memorystores.memories.MemoryDeleteParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        AnthropicClient client = AnthropicOkHttpClient.fromEnv();

        MemoryDeleteParams params = MemoryDeleteParams.builder()
            .memoryStoreId("memory_store_id")
            .memoryId("memory_id")
            .build();
        BetaManagedAgentsDeletedMemory betaManagedAgentsDeletedMemory = client.beta().memoryStores().memories().delete(params);
    }
}
```

#### Response (200)

```json
{
  "id": "id",
  "type": "memory_deleted"
}
```

## Domain types

### Beta Managed Agents Conflict Error

- `class BetaManagedAgentsConflictError`

  - `Type type`

  - `Optional<String> message`

### 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 type`

  - `Optional<String> contentSha256`

    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=java). 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=java) 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 type`

  - `String id`

    ID of the deleted memory (a `mem_...` value).

### Beta Managed Agents Error

- `class BetaManagedAgentsError: union`

  - `class BetaInvalidRequestError`

    - `JsonValue type = "invalid_request_error"`

    - `String message`

  - `class BetaAuthenticationError`

    - `JsonValue type = "authentication_error"`

    - `String message`

  - `class BetaBillingError`

    - `JsonValue type = "billing_error"`

    - `String message`

  - `class BetaPermissionError`

    - `JsonValue type = "permission_error"`

    - `String message`

  - `class BetaNotFoundError`

    - `JsonValue type = "not_found_error"`

    - `String message`

  - `class BetaRateLimitError`

    - `JsonValue type = "rate_limit_error"`

    - `String message`

  - `class BetaGatewayTimeoutError`

    - `JsonValue type = "timeout_error"`

    - `String message`

  - `class BetaApiError`

    - `JsonValue type = "api_error"`

    - `String message`

  - `class BetaOverloadedError`

    - `JsonValue type = "overloaded_error"`

    - `String message`

  - `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=java#safe-content-edits-optimistic-concurrency) to learn more about safe content edits with content hash preconditions.

    - `Type type`

    - `Optional<String> message`

      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 type`

    - `Optional<String> conflictingMemoryId`

      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.

    - `Optional<String> conflictingPath`

      The path that blocked the write: the requested path, or the path of a memory that is an ancestor or descendant of it.

    - `Optional<String> message`

      A human-readable explanation of the conflict. To handle the error in code, use `conflicting_path` and `conflicting_memory_id` instead.

  - `class BetaManagedAgentsConflictError`

    - `Type type`

    - `Optional<String> message`

### 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 type`

  - `String id`

    Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory.

  - `String contentSha256`

    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`.

  - `long contentSizeBytes`

    Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`.

    format: int32

  - `LocalDateTime createdAt`

    When this memory was created, in RFC 3339 format.

    format: date-time

  - `String memoryStoreId`

    ID of the memory store this memory belongs to (a `memstore_...` value).

  - `String memoryVersionId`

    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=java).

  - `String path`

    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.

  - `LocalDateTime updatedAt`

    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=java).

    format: date-time

  - `Optional<String> content`

    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

- `class BetaManagedAgentsMemoryListItem: union`

  One item in a [List memories](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/list?sdk_languages=java) 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 type`

    - `String id`

      Unique identifier for this memory (a `mem_...` value). Stable across renames; use this ID, not the path, to read, update, or delete the memory.

    - `String contentSha256`

      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`.

    - `long contentSizeBytes`

      Size of `content` in bytes (the UTF-8 plaintext length). Always populated, regardless of `view`.

      format: int32

    - `LocalDateTime createdAt`

      When this memory was created, in RFC 3339 format.

      format: date-time

    - `String memoryStoreId`

      ID of the memory store this memory belongs to (a `memstore_...` value).

    - `String memoryVersionId`

      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=java).

    - `String path`

      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.

    - `LocalDateTime updatedAt`

      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=java).

      format: date-time

    - `Optional<String> content`

      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=java) 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 type`

    - `String path`

      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 type`

  - `Optional<String> conflictingMemoryId`

    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.

  - `Optional<String> conflictingPath`

    The path that blocked the write: the requested path, or the path of a memory that is an ancestor or descendant of it.

  - `Optional<String> message`

    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=java#safe-content-edits-optimistic-concurrency) to learn more about safe content edits with content hash preconditions.

  - `Type type`

  - `Optional<String> message`

    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=java) 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 type`

  - `String path`

    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

- `enum 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("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("full")`

    Return the object with `content` populated. On list endpoints, `view=full` caps `limit` at 20.

### Beta Managed Agents Precondition

- `class BetaManagedAgentsPrecondition`

  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 type`

  - `Optional<String> contentSha256`

    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.