Slack Events

Receives incoming Slack events (messages, mentions, thread starts).

URL Verification: On first setup, Slack sends a url_verification challenge. The endpoint echoes back the challenge string.

Event Processing: Normal events are acknowledged immediately with {"status": "ok"} and processed in the background. This prevents Slack's 3-second retry timeout.

Retry Handling: Events with X-Slack-Retry-Num header are duplicates and return 200 without reprocessing.

Setup: Configure this URL in your Slack App under Event Subscriptions > Request URL.

See the setup guide for creating a Slack App or use the manifest for quick setup.