need a script for heartbeat

Hello Guys
I am needing a script or setup heartbeat for uptimebot they said to create a cron job: https://uptimerobot.com/help/heartbeat-monitoring/ I am not so sure how to do this in mikrotik.

Using Fetch command in a schedule should do the trick.

https://wiki.mikrotik.com/wiki/Manual:System/Scheduler
https://wiki.mikrotik.com/wiki/Manual:Tools/Fetch

Code should be as simple as:

/tool Fetch url="provided.unique.url" mode=http