Open-source an internal code-review agent with Codex
We had an agent at ChatPRD that reviews proposed code changes on GitHub. I wanted other teams to be able to use it, but our version assumed our codebase, our risks, and our team. I asked Codex to make it something another team could set up for themselves.
Using the terminal and GitHub CLI, it pulled out the company-specific assumptions, made the review rules configurable, and wrote a setup guide. We also included a skill that helps adapt the reviewer to a different team’s technology and priorities. Codex tested that customization against a fictional project with a different stack.
The public repo includes the reviewer and the customization instructions. That meant I could share a tool we already used with a way for people to make it useful in their own codebase.