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Vibecheck.dev
Vibecheck.dev is a self-hosted merge gate for GitHub pull requests that quizzes developers on their code changes before allowing them to merge.
Vibecheck is a self-hosted merge gate that requires pull request authors to prove they understand their own code changes before merging. It runs as a FastAPI service alongside a Postgres database, integrating with repositories through a single GitHub Action workflow file. When a pull request opens, Vibecheck reads the diff and generates tailored questions, which the author answers in plain English one screen at a time. An AI grader powered by Anthropic Claude checks the answers against the diff and sets a commit status to block or allow the merge. It is built for engineering teams, code reviewers, and open source maintainers facing AI-generated code.
Vibecheck.dev at a glance
Key features
- Generates an exam sheet tailored to the pull request diff
- Sizes question count automatically per 15 changed lines
- Grades plain-English answers using Anthropic Claude
- Blocks merges via a vibecheck/verdict commit status check
- Rejects oversized pull requests and diffs immediately
- Allows answer retries, explanations, or question skipping
- Includes a sarcastic evaluation mode
- Operates without GitHub Apps, OAuth, or incoming webhooks
Use it for
- Filtering unreviewed, AI-generated pull requests in open source projects
- Verifying that software engineers understand the code they submit
- Preventing reviewers from wasting time on unexplainable code changes
- Blocking merges until developers pass an automated code comprehension test
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