Slack

Happy Uptime's Slack integration handles three jobs:

1. Channel alerts — post incident notifications to any channel.
2. On-call paging — DM the person currently on-call (resolved live from your schedule).
3. Identity linking — map Happy Uptime users to Slack users so @mentions and avatars work.

Install the app

Add more channels

After install, Integrations → Slack → Channels lets you add additional channels without re-running OAuth. The channel picker is searchable and polls every 5 seconds — create a new channel in Slack and it appears immediately.

Channel names are stored without the leading #. The picker handles deduplication by (workspace_id, channel_id), so the same channel can't be added twice.

Link Slack identities

For @mentions and Slack avatars on member rows, link each Happy Uptime user to their Slack account.

Auto-match: Happy Uptime tries to match by email on first install. Anyone whose Happy Uptime email matches their Slack email is linked automatically.

Manual link: Settings → Slack Identity — pick from the list of workspace users.

When a Happy Uptime user is linked to Slack, they show as @username (U01ABCD) in member pickers, and incident DMs go to that user.

Paging the on-call person

Create an alert channel of type slack_app with notify_oncall: true:

yaml
alert_channels:  - id: slack-page    type: slack_app    channel: incidents    notify_oncall: true    schedule: engineering-oncall

When this channel fires, Happy Uptime:

1. Resolves the current on-call person from engineering-oncall (override > fixed shift > rotation).
2. Posts to #incidents with <@U01ABCD> mentioning the on-call person directly.
3. Sends them a DM with the same incident link.

If escalation is configured and the page isn't acked, the next layer is paged after the timeout.

Disconnect

Integrations → Slack → Disconnect revokes the OAuth grant and removes all linked channels. Identity links are preserved in case you reconnect.

Troubleshooting