Webhooks

Idempotency

Handle duplicate deliveries safely.

Event id

The data.id (or aegix-event-id header) identifies one logical event. Store processed event ids and ignore duplicates — AEGIX retries deliveries, so the same event id may arrive more than once.

Guidance

Persist processed event ids and skip known ones.
Make handlers idempotent regardless of event id.
Never log the full signature or your secret.