---
title: Delete a memory
url: https://platform.claude.com/docs/en/api/http/beta/memory_stores/memories/delete
---

# Delete a memory

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

Delete a memory

## Path parameters

- `memory_store_id: string`

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

- `memory_id: string`

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

## Query parameters

- `expected_content_sha256: optional string`

  Delete the memory only if its current `content_sha256` equals this value, given as 64 lowercase hexadecimal characters. Omit it to delete unconditionally.

  If the hashes differ, the request fails with HTTP status 409 and nothing is deleted.

## Headers

- `"anthropic-version": optional string`

  The version of the Claude API you want to use.

  Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning?sdk_languages=http).

- `"anthropic-beta": optional array of AnthropicBeta`

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

  - `string`

  - `"message-batches-2024-09-24"`

  - `"prompt-caching-2024-07-31"`

  - `"computer-use-2024-10-22"`

  - `"computer-use-2025-01-24"`

  - `"pdfs-2024-09-25"`

  - `"token-counting-2024-11-01"`

  - `"token-efficient-tools-2025-02-19"`

  - `"output-128k-2025-02-19"`

  - `"files-api-2025-04-14"`

  - `"mcp-client-2025-04-04"`

  - `"mcp-client-2025-11-20"`

  - `"dev-full-thinking-2025-05-14"`

  - `"interleaved-thinking-2025-05-14"`

  - `"code-execution-2025-05-22"`

  - `"extended-cache-ttl-2025-04-11"`

  - `"context-1m-2025-08-07"`

  - `"context-management-2025-06-27"`

  - `"model-context-window-exceeded-2025-08-26"`

  - `"skills-2025-10-02"`

  - `"fast-mode-2026-02-01"`

  - `"output-300k-2026-03-24"`

  - `"user-profiles-2026-03-24"`

  - `"user-profiles-2026-08-18"`

  - `"user-profiles-2026-09-04"`

  - `"advisor-tool-2026-03-01"`

  - `"managed-agents-2026-04-01"`

  - `"cache-diagnosis-2026-04-07"`

  - `"dreaming-2026-04-21"`

  - `"thinking-token-count-2026-05-13"`

  - `"server-side-fallback-2026-06-01"`

  - `"server-side-fallback-2026-07-01"`

  - `"fallback-credit-2026-06-01"`

  - `"fallback-credit-2026-07-01"`

  - `"agent-memory-2026-07-22"`

  - `"mid-conversation-tool-changes-2026-07-01"`

  - `"compact-2026-01-12"`

  - `"computer-use-2025-11-24"`

  - `"mcp-tunnels-2026-06-22"`

  - `"structured-outputs-2025-11-13"`

  - `"task-budgets-2026-03-13"`

  - `"thinking-display-updates-2026-08-18"`

  - `"ce-user-management-2026-07-13"`

  - `"mid-conversation-output-config-2026-07-01"`

  - `"thinking-binding-controls-2026-08-01"`

  - `"mid-conversation-system-clear-at-2026-08-21"`

  - `"compact-2026-09-04"`

  - `"inline-tools-2026-09-15"`

  - `"mcp-client-2026-09-15"`

  - `"ce-plugins-2026-09-01"`

  - `"spend-limit-reads-2026-09-26"`

  - `"telemetry-destinations-2026-08-11"`

- `"anthropic-workspace-id": optional string`

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

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

## Returns

- `BetaManagedAgentsDeletedMemory object`

  Tombstone returned by [Delete a memory](https://platform.claude.com/docs/en/api/beta/memory_stores/memories/delete?sdk_languages=http). Deleting a memory does not erase its version history: its versions remain listable via [List memory versions](https://platform.claude.com/docs/en/api/beta/memory_stores/memory_versions/list?sdk_languages=http) while they are retained (each version is kept for at least the version retention period after it was written, unless the store itself is deleted).

  - `type: "memory_deleted"`

  - `id: string`

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

## Example

```bash
curl https://api.anthropic.com/v1/memory_stores/$MEMORY_STORE_ID/memories/$MEMORY_ID \
    -X DELETE \
    -H 'anthropic-version: 2023-06-01' \
    -H 'anthropic-beta: agent-memory-2026-07-22' \
    -H "X-Api-Key: $ANTHROPIC_API_KEY"
```

### Response (200)

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