Wrote a prometheus exporter for gqgmc. Specifically it works with a GQ GMC 300Plus but tried to write it so that it will support all models. You can add it in with your existing prometheus setup, get alerts and check out exciting graphs!
There's still more to do, but it works good enough for my uses so likely to stay stable unless anyone has some merge requests they'd like to offer.
It's written in Go and I've seeded the issue tracker with a number of obvious starter projects as well as longer term issues. One of which is configuration - what I asked about earlier. The information was useful btw, but for now it's not needed for me.