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code-reviewer

Analyzes code diffs and files to identify bugs, security vulnerabilities (SQL injection, XSS, insecure deserialization), code smells, N+1 queries, naming issues, and architectural concerns, then produces a structured review report with prioritized, actionable feedback. Use when reviewing pull requests, conducting code quality audits, identifying refactoring opportunities, or checking for security issues. Invoke for PR reviews, code quality checks, refactoring suggestions, review code, code quality. Complements specialized skills (security-reviewer, test-master) by providing broad-scope review

ScannedSkillSource: GitHub

11,943 stars +108 this week Updated 19d ago License MIT Context ≈154 tokens always loaded

81popular

Why this score

Stars

22/35

Usage (forks)

9/15

Upkeep

25/25

License

15/15

Owner history

10/10

This repo hosts 10 skills, so its 11,943 stars are split between them (about 1,194 each) for scoring.

Popularity score: 81/100 from public GitHub signals only. It shows how widely used and maintained this is, not how well it works. Not included yet: the fake-star check. The security scan is shown separately and doesn't change the score. How we rank

Security

Scanned Oct 20, 2026 at commit 36f3fe8052da, with Cisco's open-source skill-scanner.

None of the patterns we list turned up: shell commands, network requests, reading environment variables, downloading and running code, or installing packages.

A scan lists patterns in the code. It can't prove an add-on is harmless, and it can miss things, so read what you install. How we scan

Alternatives

Other makers' add-ons that do the same job, next to this one.

Name	Score	Stars	Context	Updated
This onecode-reviewer Jeffallan/claude-skills · Skill	81	★ 12k	≈154 always	19d ago
code-reviewer-quality kid-sid/claude-spellbook · Subagent Both about reviewer and quality	53	★ 190	≈59 in chat	3mo ago
deep-code-reviewer travisjneuman/.claude · Subagent Both about reviewer and pr	59	★ 104	≈50 in chat	16d ago
xs-code-reviewer karaage0703/ai-assistant-workspace · Skill Both about reviewer and pr	55	★ 137	≈40 always	1mo ago
loom-code-reviewer cosmix/loom · Subagent Both about reviewer and quality	58	★ 62	≈38 in chat	16d ago
3dgs-code-reviewer jaccen/Awesome-Gaussian-Skills · Skill Both about reviewer and checking	61	★ 164	≈120 always	16d ago

Install

mkdir -p .claude/skills/code-reviewer

curl -sL https://codeload.github.com/Jeffallan/claude-skills/tar.gz/36f3fe8052da7c57083783268c6ea3265d075265 | tar -xz -C .claude/skills/code-reviewer --strip-components=3 "claude-skills-36f3fe8052da7c57083783268c6ea3265d075265/skills/code-reviewer"

To remove it later:

rm -rf .claude/skills/code-reviewer

npx skills add Jeffallan/claude-skills --skill code-reviewer

Pinned to commit 36f3fe8052da as listed by GitHub.

Context cost: ≈154 tokens loaded every session (name and description), plus ≈1.3k tokens when the skill is used.

The Claude Code command downloads this skill folder at the pinned commit into .claude/skills/. The Skills CLI (npx skills) works with many agents but can't pin a version, so it installs whatever is current.

Used for

Engineering › Code review Engineering › Testing & QA Engineering › Debugging Engineering › Refactoring Engineering › Databases Engineering › Git & GitHub Security › Security review

Facts

Repo: Jeffallan/claude-skills
Stars: 11,943
Forks: 1,333
Last push: 2026-10-16 (19d ago)
License: MIT
Owner: Jeffallan · since 2016
Language: Python
Works with: Claude Code, Skills CLI