What Building a Six-Agent AI Code Reviewer Taught Me About Agentic Systems
I Built a Six-Agent GitHub Code Reviewer for Free — Then It Started Calling Its Own Tools 43 Times
I wanted a portfolio project that actually demonstrated multi-agent design — not another wrapper around a single LLM call with a nice UI on top. So I built PR Review Crew: a six-agent GitHub pull request reviewer, orchestrated with ChatDev 2.0 (OpenBMB's zero-code multi-agent platform), free and open source under MIT.
Point it at any pull request. Six agents fetch the diff, review it from three angles in parallel, synthesize the findings into one comment, and post it back to GitHub. Here's what that looks like end to end, and the four real bugs I hit trying to make it work on free-tier models — bugs that taught me more about running agentic systems in production than the parts that went smoothly.
The architecture
Six agent nodes, defined in one...
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