Changelog

1. Added4 August 2026

   Developer documentation and an OpenAPI description

   These docs. Also a machine-readable OpenAPI 3.1 description of the whole API at /docs/api/openapi.json, suitable for Postman or generating a client.

2. Added22 July 2026

   Outbound webhooks

   Register an HTTPS endpoint and receive signed callbacks for document.sent, viewed, signed, completed, declined, and voided — instead of polling. Up to ten endpoints per account, on Crew and above.

3. Added22 July 2026

   Self-serve API keys

   Issue and revoke your own keys from Settings → API keys, on Crew and above. Previously keys had to be issued for you.

4. Added18 July 2026

   Creating and sending documents

   POST /documents creates a draft with its recipients, and POST /documents/{id}/send sends it for signature. Both accept an Idempotency-Key so a retried request cannot create or send twice.

5. Changed18 July 2026

   Scopes are enforced

   Every endpoint now requires a scope: documents:read, recipients:read, documents:write, or documents:send. Keys issued before this date were granted read-only access rather than being silently upgraded.

   What to do: If a key created before 18 July needs to create or send, issue a new one with the scopes you need — scopes cannot be changed after issuance.

6. Changed18 July 2026

   API access requires a paid plan

   Accounts on the free plan receive 403 api_access_required. Rate limits are set per plan.

7. Added18 July 2026

   Reading documents and recipients

   GET /documents (cursor-paginated, filterable by status), GET /documents/{id}, and GET /documents/{id}/recipients.

8. Added17 July 2026

   The API opens

   Bearer API keys in live and test modes, GET /account, per-account rate limiting, request ids on every response, and the stable error envelope.

Watching for changes? The OpenAPI description is the machine-readable version of this page — diff it between releases to see exactly what moved.