Some time ago my favourite Uptime Monitoring service changed its pricing structure and @SlackHQ integrations are not longer part of the free plan. Since I have been using Slack notifications almost exclusively, I had to look for an alternative...

... or build one myself

The result is the #UptimeSlackbot, based on @Firebase #CloudFunctions. All code is of course #OpenSource and available on #GitHub:
https://github.com/nico-martin/uptime-slackbot