I'm not sure if this is too niche to ask here, but I'll give it a try.
I work as a frontend developer. One of my biggest frustrations are issues on the backend. Sometimes:
I tried to find a tool to help with this but I can only do it with a mix of tests and monitoring tools. And almost all are focused only in production endpoints.
So I created a little desktop app that every X minutes checks a bunch of stuff. Example:

This is checking:
posts is respondingposts/3 is respondingposts is returning an arrayposts/3 is returning an object with userId 1And in every request I also know how fast, how much and what type of data it's returning.
With the app, it takes me about 2 minutes to have the checks running.
You can also reload one check or all the checks pressing the refresh buttons.
This is the JSON configuration for my checks:

I'm using on a windows machine but it also runs on mac. I caught a bunch of issues with this little app.
Do you think it would make sense to make this public?
Thanks!