MCPInstall

code-review

Perform a structured code review of changes, checking for correctness, style, tests, and potential issues.

Installs
213
Last 24h
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Trending rank
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Security
Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/langchain-ai/deepagents --skill code-review
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads code-review automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Code Review Skill

Use this skill after implementing changes to validate your work before delivering.

Review Checklist

1. Correctness

  • Changes solve the original issue/task
  • No unintended side effects on existing functionality
  • Edge cases are handled
  • Error handling is appropriate (not excessive)

2. Code Quality

  • Code matches existing style and patterns
  • No unnecessary complexity or abstraction
  • Variable and function names are clear
  • No dead code, commented-out code, or TODOs left behind

3. Tests

  • New functionality has test coverage
  • Existing tests still pass
  • Tests cover both happy path and error cases
  • Tests are not brittle (don't test implementation details)

4. Safety

  • No hardcoded secrets or credentials
  • User input is validated at boundaries
  • No SQL injection, XSS, or command injection vectors
  • File operations use safe paths

Process

  1. Read each modified file end-to-end (not just the diff)
  2. Run the test suite: execute("python -m pytest -v")
  3. Run linters if available: execute("ruff check .")
  4. Run the bundled lint check: execute("python /skills/code-review/lint_check.py .")
  5. Check against each item in the review checklist
  6. If any issues found, fix them and re-review
  7. When everything passes, the review is complete

Helper Scripts

  • /skills/code-review/lint_check.py — Scans Python files for missing docstrings, long functions (>50 lines), and bare except: clauses. Run it via execute("python /skills/code-review/lint_check.py [path ...]").

FAQ

What does the code-review skill do?

Perform a structured code review of changes, checking for correctness, style, tests, and potential issues.

How do I install code-review?

Run npx skills add https://github.com/langchain-ai/deepagents --skill code-review in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/code-review/ (personal) or .claude/skills/code-review/ (project).

Which AI agents can use code-review?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is code-review safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains code-review?

It is published by langchain-ai in langchain-ai/deepagents, and it is an official skill from the maker of the technology it covers. It has 213 recorded installs.

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