# contractors.files.confirm

Confirm an uploaded contractor document (fileId) once its bytes are uploaded. Its size, SHA-256 and file type are checked against what was prepared.

`POST /api/v1/accounting/contractors.files.confirm`

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

MCP tool: `accounting_contractors_files_confirm`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `fileId` | string (ID) | Yes | The ID of the related record. |
| `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. 8–150 characters. |

## Example request

```bash
curl https://app.getoatmilk.com/api/v1/accounting/contractors.files.confirm \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "fileId": "9a8b7c6d-5e4f-4a3b-8c2d-1e0f9a8b7c6d"
}'
```

Reference page: https://app.getoatmilk.com/docs/api/contractors.files.confirm