---
title: "Memory Operations"
sidebarTitle: "CRUD & Forgetting"
description: "Forget extracted memories exactly or by meaning"
icon: "/icons/hugeicons/database-01.svg"
---

<Info>
These operations act on extracted memories (not raw documents). Every call is scoped to one `namespace` (what v3/v4 called a container tag).

For document management (list, get, update, delete), see [Document Operations](/ingestion/document-operations).
For ingesting raw content (text, files, URLs) through the processing pipeline, see [Add Context](/ingestion/add-memories).
</Info>

## Create memories

v5 has no direct memory-create route. Ingest a document instead and Supermemory extracts the memories from it. When you already know the exact facts, send them as short statements with `dreaming: "instant"` so they are searchable right away.

<Tabs>
  <Tab title="TypeScript">
    ```typescript
    await supermemory.add("user_123", {
      content: "John prefers dark mode.\nJohn is from Seattle.",
      id: "prefs_john",
      metadata: { source: "user_preference" },
      dreaming: "instant",
    });
    ```
  </Tab>
  <Tab title="cURL">
    ```bash
    curl -X POST "https://api.supermemory.ai/ns/user_123/document" \
      -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{
        "content": "John prefers dark mode.\nJohn is from Seattle.",
        "id": "prefs_john",
        "metadata": { "source": "user_preference" },
        "dreaming": "instant"
      }'
    ```
  </Tab>
</Tabs>

Reusing the same `id` later appends to that document instead of creating a new one. See [Updating Content](/ingestion/add-memories#updating-content).

---

## Forget Memories

Soft-delete memories by ID. Forgotten memories are excluded from search results but preserved. Pass 1 to 500 IDs.

<Tabs>
  <Tab title="TypeScript">
    ```typescript
    const { count, matches, errors } = await supermemory.memories.forget("user_123", {
      ids: ["mem_abc123"],
    });
    ```
  </Tab>
  <Tab title="cURL">
    ```bash
    curl -X DELETE "https://api.supermemory.ai/ns/user_123/memories" \
      -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{ "ids": ["mem_abc123"] }'
    ```
  </Tab>
</Tabs>

### Parameters

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `namespace` | string | yes | Namespace the memories belong to (URL path) |
| `ids` | string[] | yes | Memory IDs to forget (1 to 500) |

### Response

```json
{
  "count": 1,
  "matches": [{ "id": "mem_abc123", "memory": "John prefers dark mode" }],
  "errors": []
}
```

| Field | Type | Description |
|-------|------|-------------|
| `count` | number | Number of memories forgotten; always equals `matches.length` |
| `matches` | array | The memories that were forgotten (`{ id, memory }`) |
| `errors` | array | IDs that were missing, already forgotten, or in another namespace (`{ id, error }`) |

HTTP success does not imply every requested ID changed. Check `errors`.

---

## Forget matching

Forget by meaning. Give a `query` (a prompt or topic) and the service semantically searches the namespace, decides which memories are genuinely about your target, and soft-deletes those — use this for "forget everything about X".

<Warning>
This is a bulk, destructive operation. `dryRun` is required. Call with **`dryRun: true`** first to review what would be forgotten, then apply. The match is semantic, so a too-broad query can select more than you intend. Each request selects at most 100 memories. After applying a batch, repeat the preview-and-apply workflow to find more; repeated previews alone do not paginate and may return the same matches.
</Warning>

<Tabs>
  <Tab title="TypeScript">
    ```typescript
    // 1) Preview
    const preview = await supermemory.memories.forgetMatching("user_123", {
      query: "forget everything about Project Titan",
      dryRun: true,
    });
    // preview.matches → [{ id, memory }, ...]

    // 2) Apply — pass the ids from the preview to forget exactly that set
    const result = await supermemory.memories.forget("user_123", {
      ids: preview.matches.map((m) => m.id),
    });
    // result.matches → [{ id, memory }, ...]
    ```
  </Tab>
  <Tab title="cURL">
    ```bash
    # Preview
    curl -X DELETE "https://api.supermemory.ai/ns/user_123/memories/semantic" \
      -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{
        "query": "forget everything about Project Titan",
        "dryRun": true
      }'

    # Apply — pass the ids from the preview to forget exactly that set
    curl -X DELETE "https://api.supermemory.ai/ns/user_123/memories" \
      -H "Authorization: Bearer $SUPERMEMORY_API_KEY" \
      -H "Content-Type: application/json" \
      -d '{ "ids": ["abc123", "def456", "ghi789"] }'
    ```
  </Tab>
</Tabs>

### Parameters

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `namespace` | string | yes | Namespace to scope the operation to (URL path) |
| `query` | string | yes | What to forget — a natural-language instruction ("forget everything about Project Titan") or a bare topic ("Project Titan"). 1 to 2000 characters |
| `dryRun` | boolean | yes | `true` returns what *would* be forgotten without changing anything. `false` forgets the memories selected when that request runs |

### Response

Both dry-run and applied requests return the same shape as [Forget Memories](#forget-memories):

```json
{
  "count": 3,
  "matches": [
    { "id": "mem_1", "memory": "Project Titan ships in Q3" }
  ],
  "errors": []
}
```

`errors` is always empty for semantic requests. The payload does not say which mode was sent, so keep your own record of `dryRun` next to audit logs.

<Tip>
**Exact, bound deletes.** Re-running `forgetMatching` with `dryRun: false` re-runs the semantic match, so the result can drift from the preview if the namespace changed in between. To forget *precisely* what you reviewed, take the `id`s from the `dryRun` preview and send them to `memories.forget` — the delete is then bound to exactly that set.
</Tip>

---

## Update Memory

v5 has no direct memory-update route. Update the source document instead; Supermemory reprocesses it and the memories follow.

```typescript
await supermemory.documents.update("user_123", "prefs_john", {
  content: "John prefers light mode.\nJohn is from Seattle.",
});
```

See [Update Document](/ingestion/document-operations#update-document).

---

## Next steps

- [Review Inferred Memories](/recall/memory-review) — Approve or decline low-confidence memories
- [Document Operations](/ingestion/document-operations) — Manage documents
- [Search](/recall/search) — Query your memories
- [Ingesting Content](/ingestion/add-memories) — Add new content