Overview

Outline:

• Why webhooks (push vs. poll for transaction state).

• How to register a URL in the Agent Console.

• Delivery semantics: at-least-once, ordered per-resource, retried with exponential backoff.

• Required HTTP response (2xx within 5 seconds).

• Best practices: respond fast, queue work, dedupe by event_id.

See Signature Verification for security and Events for the catalog.