Use Alert Script to generate RMM notification via REST API

i’m trying to integrate URBackup with my RMM, Pulseway.
I would like to use the rest api function of pulseway to generate a notification on RMM with alert script instead of sending an email.
In the pulseway documentation for REST API there are scripts for Ruby, Python, Node.js, Perl, PHP, C#, Java and cURL.
So, the first question is: what is the language used in urbackup alert script ?
Then: Is there a way to execute one of that Pulseway scripts ?
The last question is: how often is the alert script executed ?

Thank you all.