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:
Building an AI code review agent for our self-hosted GitLab - Upsun Developer
I vibe-coded a GitLab code review agent last month - 40K lines of Python written by Claude - and it has reviewed 1000 merge requests.
developer.upsun.com
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