A reusable Claude skill that reviews code diffs — security, correctness, conventions, performance — and produces an actionable checklist.
Why a code review skill?
A claude code review skill matters because code review is where most teams catch bugs — but human review is inconsistent, slow, and skips the boring checks. A review skill runs every check on every diff, consistently, and produces an actionable list that a human reviewer uses as a starting point rather than a replacement.
The skill reviews a diff against your codebase’s conventions, catches common security issues, verifies logic, and flags performance problems. It does not approve merges — it makes human review faster and more thorough.
Security checks
The skill checks for the OWASP top issues relevant to the diff: SQL injection, XSS, authentication flaws, secrets in code, and insecure dependencies. Each finding includes the specific line, the risk, and the fix.
Security review is the check most often skipped by humans because it requires specialized knowledge. The skill applies that knowledge consistently to every pull request.
Correctness and logic
The skill traces logic through the diff: are edge cases handled? Are null and undefined accounted for? Does a loop terminate? Are error paths tested? It flags assumptions that could break under unexpected input.
This logic check is what makes a claude code review skill valuable beyond linting. Linters catch syntax; the skill catches reasoning errors.
Conventions and style
The skill checks the diff against your project’s conventions — naming, file structure, error handling patterns. It respects your existing style rather than imposing a generic standard, so findings are relevant rather than noisy.
Consistency across a codebase is what makes it maintainable. The skill enforces consistency without a human having to nitpick every PR.
Performance checks
The skill flags obvious performance issues: N+1 queries, unnecessary re-renders, blocking operations on the main thread, and memory leaks. Each finding explains the impact and proposes a measured fix.
Browse premium Claude Skills on the marketplace for a ready-made code review workflow.
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