Kinds of monitor

Website, keyword, ping, port, heartbeat, DNS, API and incoming alert monitors, and when to use each.

Last reviewed November 11, 2026

Pick the kind that matches what you want to know. A type cannot be changed after you create the monitor, so choose the one that fits.

  • Website: does the page load and answer with a good status code?
  • Keyword: is a word on the page (or, better, not on it)? Catches an error page that still says "200 OK".
  • Ping: does a server answer ping?
  • Port: does a port, such as a database or mail server, accept connections?
  • Heartbeat: your cron job or backup pings a secret address, and you are alerted when it goes quiet.
  • DNS: does a DNS record still return what you expect?
  • API: call an endpoint with your own method, headers and body, and check the answer.
  • Incoming alerts: another tool raises the alarm and we open the incident, see Incoming alerts.