See Updown reports in Zulip! This is great to be up to date with downtime in the services you monitor with Updown!

First, create the stream you'd like to use for updown notifications, and subscribe all interested parties to this stream. We recommend the name updown.

Go to your Updown settings page and in WEBHOOKS section, enter the following as the URL:

{{ external_api_uri_subdomain }}/v1/external/updown?api_key=abcdefgh&stream=updown

Congratulations! You're done!
Now you'll receive Updown notifications for your service in Zulip.