ClaudSkills / Engineering / code-quality

Critical Code Reviewer

Quality score: 70/100 · Category: Engineering · Sub-category: code-quality

lang:typescriptlang:javascripttype:review

Conduct rigorous, adversarial code reviews with zero tolerance for mediocrity. Use when users ask to "critically review" my code or a PR, "critique my code", "find issues in my code", or "what's wrong with this code". Identifies security holes, lazy patterns, edge case failures, and bad practices across Python, R, JavaScript/TypeScript, SQL, and front-end code. Scrutinizes error handling, type safety, performance, accessibility, and code quality. Provides structured feedback with severity tiers (Blocking, Required, Suggestions) and specific, actionable recommendations.

What this skill does

Critical Code Reviewer is a production-ready Claude Code skill (quality score 70/100) in the code-quality sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/critical-code-reviewer/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when users ask to "critically review" my code or a PR, "critique my code", "find issues in my code", or "what's wrong with this code". Identifies security holes, lazy patterns, edge case failures, and bad practices across Python, R, JavaScript/TypeScript, SQL, and front-end code.

Who uses this skill

The Critical Code Reviewer skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/critical-code-reviewer
curl -L https://claudskills.com/skills/critical-code-reviewer/SKILL.md \
  -o ~/.claude/skills/critical-code-reviewer/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/critical-code-reviewer/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/critical-code-reviewer/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\critical-code-reviewer\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

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