Code Reviewer

A systematic PR reviewer that walks through git diffs and checks your code against seven categories: correctness, security, performance, quality, testing, documentation, and maintainability. It outputs structured feedback with severity levels from critical to low, flagging things like hardcoded secrets, N+1 queries, and missing edge case tests. The checklist approach is thorough but mechanical. It shines when you want consistent review standards across a team, though it won't replace human judgment on architecture decisions or business logic. Includes language-specific guidelines for TypeScript, React, Python, and Go. Best for teams that want to catch common issues before human reviewers spend their time on higher-level concerns.

skills.sh installs: 665
GitHub stars: 66
last updated: Jul 14, 2026

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Install

$ npx -y skills add charon-fan/agent-playbook --skill code-reviewer --agent claude-code

Installs into .claude/skills of the current project.

Files

Code Reviewer

A comprehensive code review skill that analyzes pull requests and code changes for quality, security, maintainability, and best practices.

When This Skill Activates

This skill activates when you:

Ask for a code review
Request a PR review
Mention reviewing changes
Say "review this" or "check this code"

Review Process

Phase 1: Context Gathering

Get changed files

git diff main...HEAD --name-only
git log main...HEAD --oneline

Get the diff
```
git diff main...HEAD
```
Understand project context
- Read relevant documentation
- Check existing patterns in similar files
- Identify project-specific conventions