Conciseness

Mostly efficient but includes unnecessary explanation and duplication: the Mindset section restates the Conventional Commits/SemVer contract ("`feat` triggers a MINOR version bump, `fix` triggers PATCH") and the Type Reference table re-lists standard spec types Claude already knows; the `feat(auth): add OAuth2 login support` example appears twice (Procedure output format and Examples), and the 72-char/imperative rules are stated in Procedure steps 4–6 and again under Rules. Not level 4: the redundancy (duplicated example, repeated rules, known-spec table) is more than minor trimming; not level 2: the bulk is genuinely useful judgment content with no padding prose.

Actionability

Fully executable guidance: a format template, copy-paste-ready example messages covering feature/fix/breaking/perf cases, concrete decision rules for ambiguities ("does the user gain new capability? If yes → `feat`"), and runnable commands (`echo "feat(auth): add OAuth2 login support" | npx commitlint`, `git log --format="%s" HEAD~5..`). Not level 4: common cases are covered with copy-paste-ready output plus a ready-to-paste agent output format.

Workflow Clarity

The Procedure is a clearly sequenced 7 steps with an explicit verification checkpoint ("run `git commit --dry-run` or your local commitlint hook"), and the 'If applied, this commit will' check is a concrete validation heuristic. Not level 5: there is no feedback loop for error recovery (what to do when validation fails) and no checklist; the validation step exists but recovery handling is implicit. Not level 3: validation is explicitly present as a numbered step, not missing.

Progressive Disclosure

Clear overview with well-signaled, one-level-deep references that exist in the bundle (references/scope-and-strategy.md, references/tooling.md); deeper material (scope vocabulary, commitlint/semantic-release setup) is appropriately split out, inline links are descriptive, and the References section annotates each file plus external spec links. Not level 4: navigation is clean, both referenced paths resolve to real files, and nothing that belongs in a reference is inlined.

Specificity

Quotes: "Analyzes diffs or change descriptions, selects the correct type/scope, writes an imperative-mood header under 72 characters, and composes optional body and footer sections including breaking-change notation" — multiple concrete, specific actions with a measurable constraint (72 chars), comprehensively covering the skill's capabilities. Not level 4: there are no minor gaps; header, body, footer, and breaking-change notation are all enumerated.

Completeness

Explicitly answers both: what ("Generates and formats git commit messages following the Conventional Commits specification") and when ("Use when the user asks for help writing commit messages... or mentions conventional commits, semantic versioning, or version bumps") with concrete trigger phrases. Not level 4: the 'when' clause is already explicit and specific, not merely present.

Trigger Term Quality

Quotes: "help writing commit messages", "formatting git commits", "commit msg for staged changes", "changelog entry", "conventional commits, semantic versioning, or version bumps" — comprehensive natural-phrase coverage including synonyms ("commit msg", "changelog entry") and spec terminology. Not level 4: no commonly used trigger phrase for this domain is missing.

Distinctiveness Conflict Risk

Clear niche (Conventional Commits message generation) with distinct triggers like "conventional commits, semantic versioning, or version bumps" that would not naturally fire for unrelated skills. Not level 4: the trigger set is tightly scoped to this skill's domain; only a hypothetical near-duplicate commit-formatting skill could overlap.