Automating Code Review with a Claude Code Skill
The author built a Claude Code skill that performs a structured, multi-pass code review to catch bugs before merging pull requests. The skill checks for correctness, security, performance, maintainability, and test coverage.
Why it matters
This tool can help developers catch more bugs earlier in the development process, improving code quality and reducing technical debt.
Key Points
- 1The skill runs 5 structured review passes: correctness, security, performance, maintainability, and test coverage
- 2It provides detailed findings with severity, file/line, and concrete fix suggestions
- 3It caught real bugs like SQL injection, missing auth, performance issues, and lack of test coverage in a sample Express endpoint
Details
The author found that a single unstructured code review by Claude was not enough to catch all issues. They created a Claude Code skill called 'Deep PR Review' that performs a more comprehensive, multi-pass code review. The 5 passes check for correctness (logic errors, edge cases), security (OWASP-aligned), performance (N+1 queries, unbounded ops), maintainability (dead code, complexity), and test coverage. The skill provides detailed findings with severity, file/line, and concrete fix suggestions. It caught real bugs like SQL injection, missing auth, performance issues, and lack of test coverage in a sample Express endpoint. The skill can be installed in 30 seconds and works with any programming language.
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