What the source did
- Detects whether it was triggered by an @claude mention, an assignment or an explicit prompt.
- Reviews PR changes, answers code questions and can implement fixes.
- Shows progress as checkboxes and can return structured JSON outputs.
Summary written by Agent Cookbook. See the original for the full context.
Get their template
Made and published by anthropics. Start here; it is their original, not ours.
Repo · by anthropicsanthropics/claude-code-actionThe official GitHub Action.Open it ↗Example · by anthropicsTheir comprehensive PR review exampleOpen ↗
Their prompt
From Anthropic's example workflow Their exact wording. Source ↗
REPO: ${{ github.repository }}
PR NUMBER: ${{ github.event.pull_request.number }}
Perform a comprehensive code review with the following focus areas:
1. **Code Quality**
- Clean code principles and best practices
- Proper error handling and edge cases
- Code readability and maintainability
2. **Security**
- Check for potential security vulnerabilities
- Validate input sanitization
- Review authentication/authorization logic
3. **Performance**
- Identify potential performance bottlenecks
- Review database queries for efficiency
- Check for memory leaks or resource issues
4. **Testing**
- Verify adequate test coverage
- Review test quality and edge cases
- Check for missing test scenarios
5. **Documentation**
- Ensure code is properly documented
- Verify README updates for new features
- Check API documentation accuracy
Provide detailed feedback using inline comments for specific issues.
Use top-level comments for general observations or praise.
Approval rule
🛡
Restrict tools so it comments rather than pushes; humans merge.
Set it up
- Add the API key as a repository secret.
- Install the workflow from the repo's quick start.
- Put the prompt above in the workflow's prompt input.
- Open a test PR and check the comments.
Common failures
⚠
- Prompt injection from PR text or issues. Limit tools and don't give write tokens.
- Costs grow on busy repos; trigger on mention only.
Variations
- Trigger only when someone comments @claude.
- Return JSON outputs to drive labels.
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