/code-review

Reviews the current diff for correctness bugs as well as reuse, simplification, and efficiency improvements.

Reviews the current diff for correctness bugs as well as reuse, simplification, and efficiency improvements. [Skill] Effort levels: low, medium, high, xhigh, max, ultra. --fix applies findings to the working tree, --comment posts them as inline comments on a GitHub PR, 'ultra' starts a deep cloud review. From v2.1.154, /simplify handles the pure cleanup review without bug hunting. Details: code.claude.com/docs/en/code-review.

✅ WHEN TO USE IT?

Check a diff for bugs plus reuse/efficiency improvements

/code-review high

Deep cloud review for a critical diff

/code-review ultra

⛔ WHEN NOT TO?

Pure cleanup review without bug-hunting

Per the docs, since v2.1.154 /simplify handles that, cleaning up directly without hunting for correctness bugs.

Better: /simplify

Quick single pass over a GitHub PR

For a quick, read-only single pass by PR number, the lighter-weight command is meant for that.

Better: /review <PR number>

SOURCES

Claude Code Doku (offiziell) ↗ code.claude.com