Code Review Skill for Claude

Review code for bugs, security vulnerabilities, performance issues, and maintainability. Trigger with "review this code", "check this PR", "look at this diff", "is this code safe?", or when the user shares code and asks for feedback.

325 tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

134

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/w95/awesome-claude-corporate-skills --skill code-review

The instruction itself

7 sections, as written by the author

Code Review

Structured code review covering security, performance, correctness, and maintainability. Works on diffs, PRs, files, or pasted code snippets.

Review Dimensions

Security

SQL injection, XSS, CSRF
Authentication and authorization flaws
Secrets or credentials in code
Insecure deserialization
Path traversal
SSRF

Performance

N+1 queries
Unnecessary memory allocations
Algorithmic complexity (O(n²) in hot paths)
Missing database indexes
Unbounded queries or loops
Resource leaks

Correctness

Edge cases (empty input, null, overflow)
Race conditions and concurrency issues
Error handling and propagation
Off-by-one errors
Type safety

Maintainability

Naming clarity
Single responsibility
Duplication
Test coverage
Documentation for non-obvious logic

Output Format

Rate each dimension and provide specific, actionable findings with file and line references. Prioritize critical issues first. Always include positive observations alongside issues.

Other skills for the same job

different authors, same section of the catalogue

Receiving Code Review

by ZhanlinCui

×7

Use when receiving code review feedback, before implementing suggestions, especially if feedback seems unclear or technically questionable - requires technical rigor and verification, not performative agreement or blind implementation

2k tokens

Requesting Code Review

by ZhanlinCui

×6

Use when completing tasks, implementing major features, or before merging to verify work meets requirements

Execute git commit with conventional commit message analysis, intelligent staging, and message generation. Use when user asks to commit changes, create a git commit, or mentions "/commit". Supports: (1) Auto-detecting type and scope from changes, (2) Generating conventional commit messages from diff, (3) Interactive commit with optional type/scope/description overrides, (4) Intelligent file staging for logical grouping

Comprehensive GitHub code review with AI-powered swarm coordination

Behavioral guidelines to reduce common LLM coding mistakes. Use when writing, reviewing, or refactoring code to avoid overcomplication, make surgical changes, surface assumptions, and define verifiable success criteria.

Use this skill to review code. It supports both local changes (staged or working tree) and remote Pull Requests (by ID or URL). It focuses on correctness, maintainability, and adherence to project standards.

Refactor bloated AGENTS.md, CLAUDE.md, or similar agent instruction files to follow progressive disclosure principles. Splits monolithic files into organized, linked documentation.

Create high-quality git commits: review/stage intended changes, split into logical commits, and write clear commit messages (including Conventional Commits). Use when the user asks to commit, craft a commit message, stage changes, or split work into multiple commits.

2k tokens

How to use it

Copy the folder

Take w95/code-review from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.