[hspak]

What part of borgmon is considered user-facing? The client library? The /metrics endpoint?

I'm trying to think in terms of Prometheus and how it could be (is?) over-engineered.

I have never seen/used borgmon, sorry for the ignorance.

[ebikelaw]

It guess it depends on your point of view. I think of the rules language as being the "user-facing" part.