Looks like a good MVP/start. It wasn't immediately clear what the service does, but it was pretty close. (I'm saying this is a good thing, but could be made great.)

I may be picking nits, but I think the word "innovative" in the leading sentence could be replaced with a more descriptive adjective that better defines what the service actually monitors. "innovative monitoring service" vs "____ monitoring service". Sorry, no suggestions off the top of my head.

I think the two sentences in the "REST API" section are good, but are just begging for a graphic to illustrate it.

Anything in particular that you are looking for a review on?