I Thought My AI Code Reviewer Was Finished. Then a Single Hallucinated Line Number Broke Everything.

GitHub “Finish-Up-A-Thon” Challenge Submission

What I Built

ReviewFlow is an automated Code Review pipeline built with LangGraph. Instead of relying on a single large prompt, it routes incoming Pull Requests to three specialized agents (Security, Logic, and Style) to perform parallel reviews. The workflow is orchestrated through GitHub Actions and posts comments via the Octokit API.

The Blind Spot: When Brilliant AI Meets Silent Failures

Getting the pipeline to trigger GitHub Actions felt like a huge win. But then, I noticed a fatal issue: the comments were disappearing.