🔗 Build Your Own GitHub CI Automation for Code Reviews using Elixir and Gemini

Here’s a quick backstory. I wanted a GitHub CI action that kicks in whenever I create/re-open a PR, scans the code changes, and checks if the new code I’ve pushed follows a set of custom rules defined in the ai-code-rules folder at the root of the repo, where each rule lives in its own .md file created by me.

If any rule is broken, the CI should automatically drop a comment on the PR with the issue, a clear explanation, suggested code fixes, test cases (if needed), and a link to the rule file that was violated.

This use case originally came up through a challenge by the team at Jump—and I liked the idea enough to build my own take on it. Here’s how you can do the same for yourself or your organisation!