Power-user integration surface for Zapier, Make, n8n, custom backends, and enterprise automation. Admins create webhook endpoints with selected event types, signing secret, retry policy, and enabled/disabled toggle. Events include post.created, post.status_changed, changelog.published, ticket.created, ticket.replied, notification.created, member.invited, and integration.error.

Security: HMAC signatures, delivery log with request/response metadata, exponential backoff retries, replay button, secret rotation, and per-endpoint rate limits. This complements Slack/Discord/Twilio by serving every tool we will never build natively.