This is a systematic code review tool that walks through your codebase looking at six areas: architecture, code quality, security, performance, testing, and maintainability. It uses the Explore agent to map out your code, then digs into specific files to find issues like complexity hotspots, security vulnerabilities, and technical debt. You get a prioritized report with file and line references, severity ratings, and time estimates for fixes. The thoroughness is adjustable from a quick 15 minute scan to a deep multi-hour audit. Honestly most useful when you inherit a codebase or need ammunition for refactoring discussions, since it systematically documents what everyone already suspects is wrong.
npx skills add https://github.com/mhattingpete/claude-skills-marketplace --skill code-auditor