Glad to hear it.
There are some cases where /srv/status can say ‘ok’ when it’s not so OK. I think there’s a communiteq plugin that catches some more cases, but I couldn’t find it in 10 seconds.
I don’t see UptimeRobot in the source. And I’m pretty sure that I remember UptimeRobot hits counting at some time in the past, but I’ve been using /srv/status for a long time.