I don't use this one, but a simpler one, also running on a vps. I communicate via telegram.

I say to it: check my pending tasks on Todoist and see if you can tackle on of those by yourself.

It then finds some bugs in a webapp that I took note. I tell it to go for it, but use a new branch and deploy it on a new url. So it clones the repo, fix it, commit, push, deploy, and test. It just messages me afterwards.

This is possible because it has access to my todoist and github and several other services.