Is the Code Review and Quality skill free?

Yes. The skill itself is free from addyosmani/agent-skills. SkillProof publishes the install command and an independent test verdict at no cost.

How do I install Code Review and Quality?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Code Review and Quality with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Code Review and Quality

Reviews code across multiple quality dimensions before it merges into main.

by addyosmani · addyosmani/agent-skills

Tested · Didn't pass

Read why it failed Download source ↗

Test report

Verdict: Tested · Didn't pass
Tested: Jul 11, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · 7dfa563

⚠ The author changed this skill after we tested it. The verdict below describes the version we ran on Jul 11, 2026; it's queued for a re-test.

The card's verbatim install copies only the skill folder and silently drops the repo-root references/ directory that SKILL.md's 'See Also' points to (security-checklist.md, performance-checklist.md) — you must copy those two files in manually. In an A/B review of a deliberately buggy PR, the skill arm produced a well-structured severity-labeled review, but the no-skill baseline caught every same issue plus one extra correctness bug (undeclared router), so the skill added format discipline rather than substance. Solid reference document for review methodology; expect setup surgery and no measurable output lift for a capable agent.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 3/5
Triggers reliably 4/5
Output vs. baseline 4/10
Docs & honesty 3/5

What Code Review and Quality does

Conducts multi-axis code review. Use before merging any change. Use when reviewing code written by yourself, another agent, or a human. Use when you need to assess code quality across multiple dimensions before it enters the main branch.

How to install Code Review and Quality

git clone https://github.com/addyosmani/agent-skills
cd agent-skills
mkdir -p ~/.claude/skills
cp -r skills/code-review-and-quality ~/.claude/skills/code-review-and-quality

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Code Review and Quality

/code-review-and-quality Reviews code across multiple quality dimensions before it merges into main.

It also activates on plain-language prompts like these:

Review this pull request for code quality issues
Check my changes before I merge them to main
Assess this code across readability, tests, and design

Frequently asked questions

Is the Code Review and Quality skill free?: Yes. The skill itself is free from addyosmani/agent-skills. SkillProof publishes the install command and an independent test verdict at no cost.
Does Code Review and Quality work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 11, 2026. Verdict: Tested · Didn't pass. The card's verbatim install copies only the skill folder and silently drops the repo-root references/ directory that SKILL.md's 'See Also' points to (security-checklist.md, performance-checklist.md) — you must copy those two files in manually. In an A/B review of a deliberately buggy PR, the skill arm produced a well-structured severity-labeled review, but the no-skill baseline caught every same issue plus one extra correctness bug (undeclared router), so the skill added format discipline rather than substance. Solid reference document for review methodology; expect setup surgery and no measurable output lift for a capable agent.
How do I install Code Review and Quality?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Code Review and Quality with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.