Contractbook Document Webhooks
Contractbook's document life-cycle notification (webhook) mechanism. When a document is created, updated, or signed, Contractbook sends an HTTP request to a client-configured callback URL, letting integrations react to contract state changes instead of polling. Webhook payloads are unauthenticated by default; an access_token query parameter can be added to the callback URL, and recipients are advised to confirm state via an authenticated GET /documents/{id} call. Webhook subscriptions are configured in Contractbook rather than through documented CRUD endpoints in the Public API v3 OpenAPI, so this API is honestly modeled from the documented notification behavior.