# contractors.invitations.link

Get a portal invitation link to send a contractor yourself: an open invitation is reused, or a 7-day one is created, and nothing is emailed. The same link keeps working until it expires or is revoked.

`POST /api/v1/accounting/contractors.invitations.link`

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

MCP tool: `accounting_contractors_invitations_link`

## Fields

| Field | Type | Required | Notes |
| --- | --- | --- | --- |
| `contractorId` | string (ID) | Yes | The ID of a contractor, from contractors.list. |
| `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.invitations.link \
  -H "Authorization: Bearer $OATMILK_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "contractorId": "4d5e6f7a-8b9c-4d0e-8f1a-2b3c4d5e6f7a"
}'
```

Reference page: https://app.getoatmilk.com/docs/api/contractors.invitations.link