Webhooks

Webhooks send signed HTTPS notifications when supported data changes in célula.in. Use them to keep an integration synchronized without repeatedly polling the API.

Delivery is retry-capable but best-effort. Verify every signature, accept events durably and idempotently, and continue reconciling through the API so a missed notification does not become a missed update.

Webhook guides

• Overview: understand the protocol, delivery model, event catalog, and retention window.
• Getting started: create and verify your first endpoint.
• Verify signatures: authenticate the exact raw request body and safely accept events.
• Event types and envelope: implement forward-compatible event handling.
• Payload reference: inspect the resource snapshots included with each event.
• Manage endpoints: update subscriptions, pause delivery, change URLs, and rotate secrets.
• Deliveries and retries: inspect attempts and manually redeliver eligible events.