Oh, it was an error on my side, the link actually works.

If you are happy to share the code - I think quite some people would be happy. The openness doesn't guarantee, but usually leads to better security, performance, etc.

It is very nice of you to provide such a service (and for free, as I see), but your docs says we, users, better not update stuff faster than once per second and that's quite a big limitation for some big companies with lots of processes to track (which probably can't be grouped together into a single batch update as your docs suggest to do).

Yes, definitely. The service could easily be scaled and rate limits can be increased if users are willing to pay for. Self-hosting is a good alternative, as you already suggested.

I'll work on cleaning up the code, adding some dev documentation and releasing it on GitHub when I find some time. Perhaps this weekend already!