I've been using a tool called Fabrk AI to build agents that have tools that integrate with any service that has Oauth. I've hooked it up to github, slack and gmail for now.

I write issues in a repo and the agent pulls it down, creates a branch and writes the code. Works pretty well. Even integrates with e2b.dev and can run code.

This is the template I started with: https://www.fabrk.ai/agent/github-demo