Conciseness

The body is efficient and assumes Claude's competence — no basic-concept explanations — but has minor trims available: the opener "You are a code reviewer. Your job is to review code changes and provide actionable feedback" duplicates the frontmatter description, and "Use best judgement when processing input" is filler. This fits 'Efficient; minor instances of over-explanation that could be trimmed' rather than the every-token-earns-its-place anchor 5.

Actionability

The input-handling section gives copy-paste-ready commands for all four cases ("git diff --cached", "git show $ARGUMENTS", "git diff $ARGUMENTS...HEAD", "gh pr diff $ARGUMENTS"), and guidance elsewhere is concrete down to examples like "O(n²) on unbounded data, N+1 queries, blocking I/O on hot paths" — matching 'Fully executable; copy-paste ready code or commands; specific examples cover the common cases'.

Workflow Clarity

The sections are sequenced as a real workflow (determine review target → gather context → what to look for → pre-flag verification → output), with explicit validation steps and feedback loops: "Don't flag something as a bug if you're unsure - investigate first", "Verify the code is *actually* in violation", and the fallback "say 'I'm not sure about X' rather than flagging it". This matches the anchor-5 pattern of clear sequence plus explicit validation with error-recovery loops; this is a read-only review skill, so the destructive/batch cap does not apply.

Progressive Disclosure

This is a single-file, ~100-line skill with well-organized headers, no bundle files, and no content that clearly belongs in a separate reference file — the structure is easy to navigate with nothing buried. Per the rubric's simple-skill guidance, well-organized sections with no need for external references warrant a 5.

Specificity

"Reviews code changes and provides actionable feedback" names the domain with exactly two fairly generic actions, matching the anchor 'Names domain and 1-2 concrete actions, but not comprehensive'. It does not list several specific actions (e.g., 'identifies bugs, security flaws, convention violations'), so it is not a 4; and it goes beyond a bare domain mention like 'Processes PDF files', so it is not a 2.

Completeness

It explicitly answers both parts: what ("Reviews code changes and provides actionable feedback") and when ("Use when the user asks to review a PR, diff, commit, or code changes. Triggers on '/review', 'review this PR', 'review my changes', 'code review'") with concrete trigger phrases — a direct match to the anchor-5 example pattern.

Trigger Term Quality

Coverage is good and natural: "review a PR", "diff", "commit", "/review", "review this PR", "review my changes", "code review" are phrases users would actually say. A few natural terms are missing (e.g., "pull request" spelled out, "review this diff", "look over my code"), which keeps it at the 'good coverage; a few natural terms missing' anchor rather than the comprehensive anchor 5.

Distinctiveness Conflict Risk

"Reviews code changes... PR, diff, commit" carves out a clear niche with distinct triggers and minimal conflict risk against adjacent skills (e.g., commit-message generation), matching 'Clear niche with distinct triggers; minimal conflict risk'.