# Code Review (agent skill)

> Code Review is an agent skill (a SKILL.md file) from mattpocock/skills. Review the changes since a fixed point (commit, branch, tag, or merge-base) along two axes: Standards (does the code follow this repo's documented coding standards?) and Spec (does… It works with Claude Code and Codex and has 278,361 GitHub stars across a repository of 15 listed skills.

Review the changes since a fixed point (commit, branch, tag, or merge-base) along two axes: Standards (does the code follow this repo's documented coding standards?) and Spec (does the code match what the originating issue/spec asked for?). Runs both reviews in parallel sub-agents and reports them side by side. Use when the user wants to review a branch, a PR, work-in-progress changes, or asks to "review since X". Two-axis review of the diff between HEAD and a fixed point the user supplies:

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/mattpocock/skills |
| Skill path | skills/engineering/code-review/SKILL.md |
| Skill name | code-review |
| GitHub stars | 278,361 |
| Installs on skills.sh | 678,357 |
| License | MIT |
| Skills in repo | 15 |
| Plugin marketplace | mattpocock |
| Official | no |
| Works with | Claude Code, Codex |
| Category | Coding |
| Last commit | Oct 6, 2026 |

## When it triggers

- Use when the user wants to review a branch, a PR, work-in-progress changes, or asks to "review since X".
- "review since X"

## Add this skill

### Claude Code

```sh
/plugin marketplace add mattpocock/skills
/plugin install mattpocock-skills@mattpocock
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/mattpocock/skills.git
cp -r skills/skills/engineering/code-review .agents/skills/code-review   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/mattpocock/skills.git
cp -r skills/skills/engineering/code-review .cursor/skills/code-review   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

skills.sh listing: https://www.skills.sh/mattpocock/skills/code-review

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Canonical page: https://appsgit.com/skills/mattpocock-code-review
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