# documents.comments.create

Add an auditable comment thread to an agreement template. A text selection may be anchored; mention IDs must belong to active members of this organization. Requires an idempotency key.

`POST /api/v1/accounting/documents.comments.create`

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

MCP tool: `accounting_documents_comments_create`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `documentType` | "agreement_template" | Yes |  |
| `documentId` | string (ID) | Yes | The ID of the related record. |
| `anchor` | object or null | Yes |  |
| `anchor.from` | integer | Yes | The first date to include, as YYYY-MM-DD. 0 to 1000000. |
| `anchor.to` | integer | Yes | The last date to include, as YYYY-MM-DD. 0 to 1000000. |
| `anchor.quote` | string | Yes | at most 2000 characters. |
| `anchor.before` | string |  | at most 100 characters. Default `""`. |
| `anchor.after` | string |  | at most 100 characters. Default `""`. |
| `body` | string | Yes | 1–10000 characters. |
| `mentions` | array of strings |  | at most 20 items; each 1–200 characters. |
| `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/documents.comments.create \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "documentType": "agreement_template",
  "documentId": "1a2b3c4d-5e6f-4a7b-8c9d-0e1f2a3b4c5d",
  "anchor": {
    "from": 1,
    "to": 1,
    "quote": "USD"
  },
  "body": "Synthetic example from the docs"
}'
```

Reference page: https://app.getoatmilk.com/docs/api/documents.comments.create