# cards.claim

Update the caller's card claims atomically: identifierIds claims unassigned cards, releaseIdentifierIds releases only cards the caller personally claimed, seenIdentifierIds records what they reviewed, and idempotencyKey prevents duplicate saves. Other people's cards and finance-managed assignments cannot be changed; administrators reassign those in Cards.

`POST /api/v1/accounting/cards.claim`

Permissions: `accounting:read`, `accounting:write` · Roles: admin, finance, contributor · Idempotency key required

MCP tool: `accounting_cards_claim`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `identifierIds` | array of strings (ID) | Yes | A list of record IDs. at most 10 items. |
| `releaseIdentifierIds` | array of strings (ID) |  | A list of record IDs. at most 10 items. Default `[]`. |
| `seenIdentifierIds` | array of strings (ID) |  | A list of record IDs. at most 200 items. Default `[]`. |
| `idempotencyKey` | string | Yes | Any unique text you generate once per intended change, so a retried request only happens once. Send it as the Idempotency-Key header instead if you prefer; if you send both they must match. 8–200 characters. |

## Example request

```bash
curl https://app.getoatmilk.com/api/v1/accounting/cards.claim \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "identifierIds": [
    "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a"
  ]
}'
```

Reference page: https://app.getoatmilk.com/docs/api/cards.claim