Code Review
Review code with focus on behavior, architecture, and test quality — not style.
Review checklist
- Behavior — Does the code do what it claims?
- Tests — Do tests verify behavior, not implementation?
- Seams — Are tests at the right boundaries?
- Architecture — Does the change fit the existing design?
- Edge cases — Are error paths and edge cases handled?
- Security — Any injection, auth, or data exposure risks?
Rules
- Review behavior first, style second.
- Ask "what could break?" not "what looks wrong?"
- Check that tests survive refactors.
- Flag implementation-coupled tests.
Credit
This skill is based on the work of Matt Pocock (@mattpocock). Original source: mattpocock/skills. Licensed under MIT.
How to use?
1. Download
Go to the AGENT KD SKILL gallery and find this skill card. Click Download to save the SKILL.md file to your computer.
2. Install
Copy the downloaded SKILL.md into your agent's skills directory:
| Agent | Path |
|---|---|
| opencode | ~/.config/opencode/skills//SKILL.md |
| Claude Code | ~/.claude/skills//SKILL.md |
| Codex CLI | ~/.codex/skills//SKILL.md |
| Cursor | ~/.cursor/skills//SKILL.md |
| Gemini CLI | ~/.gemini/skills//SKILL.md |
Example for opencode:
ash mkdir -p ~/.config/opencode/skills/<skill-name> cp SKILL.md ~/.config/opencode/skills/<skill-name>/SKILL.md
3. Use
Restart your agent session. The skill will auto-load based on its description. You can also invoke it explicitly by typing @ in your agent.
4. Verify
Ask your agent something related to the skill's purpose. If it responds using the skill's instructions, you're all set.