In simple English
Writing pull requests and checking code takes hours of careful reading. This tool connects an artificial intelligence model to your repository to read new code changes. It leaves comments on your pull requests with summaries, reviews, and suggested fixes. You can run it inside a GitHub Actions workflow or on your own computer using the command line. It is free to use under the MIT licence, though you pay for the artificial intelligence model API calls.
What it is
An open-source, AI-powered code review agent that inspects pull requests across platforms like GitHub, GitLab, and Bitbucket. It processes code diffs to generate descriptions, perform security and quality checks, and answer questions about the changes.
What it is good for
Solo builders who want automated second opinions on their code changes without paying for a commercial service. It removes the chore of writing pull request descriptions and catches obvious bugs before you merge.
- Runs locally via CLI or automatically in a CI workflow.
- Works with multiple AI providers including OpenAI, Anthropic, and local models.
- Open-source with no mandatory subscription fees or vendor lock-in.
- Requires an active API key from an artificial intelligence provider, which costs money per review.
- Setup requires configuring environment variables and webhook permissions.
- Large pull requests can consume many tokens and increase API costs quickly.
Manual code review checklists and writing pull request descriptions by hand
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source venv/bin/activate pip install "pr-agent[github]" export OPENAI_KEY=your_key_here pr-agent --pr_url https://github.com/owner/repo/pull/123 review