Slack Events API
Your Slack app missed an event. Nobody opened a ticket.
Slack events power support bots, sales workflows, and internal automations. Relin verifies Slack signatures, records URL verification and app lifecycle events, and gives you replay when your handler is down.
What Relin catches
URL verification that fails in production
Slack sends a challenge before enabling events. Relin answers it automatically and keeps the setup event in history.
Handler outage during workspace activity
Your app returns a 502 on an important message event. Relin stores the payload and lets you replay after the handler is fixed.
Signing secret drift
Requests arrive but fail Slack signature verification. Relin shows the failed signature status instead of letting the problem hide in app logs.
Slack-aware setup
Create a Slack source, paste the Relin URL into Event Subscriptions, and copy the Slack signing secret into Relin.
Event history
Inspect app lifecycle events, mentions, channel messages, and rate-limit events without digging through worker logs.
Replay after fixes
After an endpoint outage or deploy bug, replay failed Slack deliveries from Relin instead of asking users to reproduce the action.
Keep Slack automations from disappearing into logs.
Set up the Slack source, send a test event, and watch delivery from Relin.