Conciseness

'How It Works' and 'Usage' repeat the same five steps nearly verbatim (load guidelines, optionally fetch upstream, read files, apply rules, output findings), and the pinned-is-default point is stated three times across sections. This is more than 'minor instances of over-explanation' (the 4 anchor), but the body is not padded with concepts Claude already knows either, placing it at the 'could be tightened' 3 anchor.

Actionability

Concrete guidance throughout: the exact reference file to load (references/guidelines.md), the exact upstream URL, a defined output format ('terse file:line format'), and a fallback when no files are given. Not 5 because 'Check against all rules in the guidelines' delegates without a concrete example finding, leaving a minor gap.

Workflow Clarity

A clear numbered sequence with an explicit fallback checkpoint ('If no files specified, ask the user'), and this read-only review task is not destructive/batch, so no validation cap applies. Not 5 because there is no error-recovery guidance (e.g., what to do if the optional upstream fetch fails or the diff diverges), which the top anchor expects.

Progressive Disclosure

A short, well-sectioned overview body with a clearly signaled, one-level-deep link to a real, substantive bundle file (references/guidelines.md, 14KB of rules). Content is appropriately split: the overview stays lean while all rule detail lives in the reference, exactly matching the top anchor; nothing is buried or nested further.

Specificity

The what-clause 'Review docs/prose for Writing Guidelines compliance' names the domain plus a single review action, but does not enumerate the concrete capability areas (voice, tone, formatting, structure) in the description itself. It sits squarely on the 'names domain and 1-2 concrete actions, but not comprehensive' anchor, not the level above, which requires several specific listed actions.

Completeness

Explicitly answers what ('Review docs/prose for Writing Guidelines compliance') and when ('Use when asked to...') with concrete trigger phrases, mirroring the top anchor's what+when structure. It is not the level below because the 'when' is explicit and specific rather than merely present.

Trigger Term Quality

Five natural quoted phrases users would plausibly say ('review my docs', 'check writing style', 'audit prose', 'review docs voice and tone', 'check this page against the writing handbook'), covering synonyms and phrasing variants, matching the comprehensive-coverage anchor. File extensions are not applicable to this docs-review domain, so their absence does not lower the score.

Distinctiveness Conflict Risk

The writing-guidelines/docs-prose niche is clear and mostly distinct, but 'review my docs' has minor overlap risk with general code-review or docs-authoring skills. It is not 5 because that trigger could plausibly route to a different skill; not 3 because the overall framing is specific to prose/style compliance.