[Uptime Monitor] Uptime Monitor's user agent

Hello WPMU Dev team,

We've been using Uptime Robot for a long time (free version) and wanted to try Uptime Monitor to see what kind of features and integrations it has to offer.

We believe that our server is blocking the feature from our robots.txt file or the WordPress' setting "Discourage search engines".

What would be the user agent being used when checking a server availability through Uptime Monitor?

Also, is there a page that explains what the feature can do? (does it check the SSL? does it check subsites individually? etc)