Managing code reviews on a self-hosted GitLab instance can be a constant grind as the volume of merge requests starts to pile up.

We used Claude to vibe-code a custom review agent to handle this workload and the results were surprising.

• The agent consists of 40,000 lines of Python code.
• It has already reviewed 1,000 merge requests for our team.
• Building a custom tool provided the specific control we needed for our self-hosted environment.
• This approach automates the initial feedback loop and keeps the development workflow moving.

You can find the full technical write-up covering the architecture and the lessons learned here: