Slack alerts

Post a message to Slack when a rule changes state.

Uptimer sends alerts through one webhook per workspace. Point it at a Slack incoming webhook and you get a message in your channel whenever a rule flips up → down (or recovers).

Set it up

1. In Slack, create an Incoming Webhook and copy its URL.
2. In Uptimer, open Workspace → Settings → Webhook URL, paste it, and save.

On the next status change, Uptimer POSTs a Slack-formatted message — green when a rule recovers, red when it goes down — with a link back to the rule’s history.

Alerts fire on state transitions, not on every check: one message when a rule goes down, one when it recovers — not one per interval.

The webhook is configured in the dashboard (not the REST API), and there is one URL per workspace. To send somewhere other than Slack, see Webhooks.