Claude Platform Docs

Update a Memory

BetaManagedAgentsMemory Beta.MemoryStores.Memories.Update(parameters, cancellationToken = default)
POST/v1/memory_stores/{memory_store_id}/memories/{memory_id}

Update a Memory

Parameters
MemoryUpdateParams parameters
required string memoryStoreID⁠Path parameter

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

required string memoryID⁠Path parameter

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

BetaManagedAgentsMemoryView view⁠Query parameter

Whether a memory or memory_version in the response includes its content. Defaults to full on retrieve operations and to basic on list, create, and update operations.

With full, list operations return at most 20 items per page.

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).

string? path

The new path of the memory, which renames it. Omit it to keep the current path.

The memory keeps its id. A path starts with / and has 1 to 20 segments. A segment can't be empty and can't be . or ... A path can't contain control characters, format characters, or the line and paragraph separators U+2028 and U+2029. It must be in Unicode Normalization Form C and at most 1,024 bytes long. Paths are case-sensitive.

minLength2
maxLength1024
BetaManagedAgentsPrecondition precondition

The condition that the memory must meet for the update to apply. Omit it to update unconditionally.

If the condition fails, the request fails with HTTP status 409.

IReadOnlyList<AnthropicBeta> betas⁠Header parameter

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

MessageBatches2024_09_24("message-batches-2024-09-24")
PromptCaching2024_07_31("prompt-caching-2024-07-31")
ComputerUse2024_10_22("computer-use-2024-10-22")
ComputerUse2025_01_24("computer-use-2025-01-24")
Pdfs2024_09_25("pdfs-2024-09-25")
TokenCounting2024_11_01("token-counting-2024-11-01")
TokenEfficientTools2025_02_19("token-efficient-tools-2025-02-19")
Output128k2025_02_19("output-128k-2025-02-19")
FilesApi2025_04_14("files-api-2025-04-14")
McpClient2025_04_04("mcp-client-2025-04-04")
McpClient2025_11_20("mcp-client-2025-11-20")
DevFullThinking2025_05_14("dev-full-thinking-2025-05-14")
InterleavedThinking2025_05_14("interleaved-thinking-2025-05-14")
CodeExecution2025_05_22("code-execution-2025-05-22")
ExtendedCacheTtl2025_04_11("extended-cache-ttl-2025-04-11")
Context1m2025_08_07("context-1m-2025-08-07")
ContextManagement2025_06_27("context-management-2025-06-27")
ModelContextWindowExceeded2025_08_26("model-context-window-exceeded-2025-08-26")
Skills2025_10_02("skills-2025-10-02")
FastMode2026_02_01("fast-mode-2026-02-01")
Output300k2026_03_24("output-300k-2026-03-24")
UserProfiles2026_03_24("user-profiles-2026-03-24")
UserProfiles2026_08_18("user-profiles-2026-08-18")
UserProfiles2026_09_04("user-profiles-2026-09-04")
AdvisorTool2026_03_01("advisor-tool-2026-03-01")
ManagedAgents2026_04_01("managed-agents-2026-04-01")
CacheDiagnosis2026_04_07("cache-diagnosis-2026-04-07")
Dreaming2026_04_21("dreaming-2026-04-21")
ThinkingTokenCount2026_05_13("thinking-token-count-2026-05-13")
ServerSideFallback2026_06_01("server-side-fallback-2026-06-01")
ServerSideFallback2026_07_01("server-side-fallback-2026-07-01")
FallbackCredit2026_06_01("fallback-credit-2026-06-01")
FallbackCredit2026_07_01("fallback-credit-2026-07-01")
AgentMemory2026_07_22("agent-memory-2026-07-22")
MidConversationToolChanges2026_07_01("mid-conversation-tool-changes-2026-07-01")
Compact2026_01_12("compact-2026-01-12")
ComputerUse2025_11_24("computer-use-2025-11-24")
McpTunnels2026_06_22("mcp-tunnels-2026-06-22")
StructuredOutputs2025_11_13("structured-outputs-2025-11-13")
TaskBudgets2026_03_13("task-budgets-2026-03-13")
ThinkingDisplayUpdates2026_08_18("thinking-display-updates-2026-08-18")
CEUserManagement2026_07_13("ce-user-management-2026-07-13")
MidConversationOutputConfig2026_07_01("mid-conversation-output-config-2026-07-01")
ThinkingBindingControls2026_08_01("thinking-binding-controls-2026-08-01")
MidConversationSystemClearAt2026_08_21("mid-conversation-system-clear-at-2026-08-21")
Compact2026_09_04("compact-2026-09-04")
InlineTools2026_09_15("inline-tools-2026-09-15")
McpClient2026_09_15("mcp-client-2026-09-15")
CEPlugins2026_09_01("ce-plugins-2026-09-01")
SpendLimitReads2026_09_26("spend-limit-reads-2026-09-26")
TelemetryDestinations2026_08_11("telemetry-destinations-2026-08-11")
Webhooks2026_10_07("webhooks-2026-10-07")
MessageThreads2026_08_12("message-threads-2026-08-12")
AnalyticsUsageCost2026_08_24("analytics-usage-cost-2026-08-24")
ExperimentalClaudeTag2026_10_21("experimental-claude-tag-2026-10-21")
string workspaceID⁠Header 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 { Type = "memory"; ID; ContentSha256; /* 7 more */ }

A text document at a path inside a memory store.

content is null when the response uses view=basic. content_size_bytes and content_sha256 are always set, so you can detect changes without fetching the content. To retrieve, update, or delete a memory, pass its ID, which stays the same when its path changes.

See the memory guide to learn more about working with memories.

Update a Memory
using System;
using Anthropic.Models.Beta.MemoryStores.Memories;

MemoryUpdateParams parameters = new()
{
    MemoryStoreID = "memory_store_id",
    MemoryID = "memory_id",
};

var betaManagedAgentsMemory = await client.Beta.MemoryStores.Memories.Update(parameters);

Console.WriteLine(betaManagedAgentsMemory);
Returns Examples
Response 200
{
  "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"
}