Conciseness

The body is prose-lean (bulleted checklists, no explanatory padding) but ~165 lines largely restate Lighthouse's own categories and well-known thresholds (LCP<2.5s, INP<200ms, CLS<0.1, WCAG 4.5:1, POUR) that Claude already knows, so not every token earns its place; this fits anchor 2 ("mostly efficient but could be tightened") better than the every-token-earns-its-place bar of 3.

Actionability

It provides a concrete output template and severity table, but the "How it works" steps are abstract ("Analyze the provided code/project", "Provide specific actionable recommendations") with no executable commands or code, and critically it never references the bundled scripts/analyze.sh; this matches anchor 2 ("some concrete guidance but incomplete; missing key details") rather than the copy-paste-ready level of 3 or the purely-descriptive level of 1.

Workflow Clarity

The four numbered "How it works" steps and audit-output template give a recognizable sequence, but there is no explicit validation/verification checkpoint and the bundled analyzer script is not wired into the flow, matching anchor 2 ("steps listed but validation gaps; checkpoints missing or implicit"); it is above 1 (steps are present) but below 3 (no explicit validate-and-retry feedback loop).

Progressive Disclosure

There are no references/ or assets/ bundle files; the four audit categories are all kept inline in one ~165-line file (content that could be split into per-category reference files), and the only References section points to sibling SKILL.md files rather than bundle materials, fitting anchor 2 ("some structure but content that should be separate is inline"); it is not the monolithic/nested-2+-levels case of 1 nor the well-signaled one-level-deep split of 3.

Specificity

Names the domain and the four audit categories ("performance, accessibility, SEO, and best practices") but uses the abstract verb "covering" rather than listing concrete actions like extract/merge/fill; anchor 2 ("Names domain and some actions, but not comprehensive") is the closest match, and it lacks the multiple specific concrete actions required for a 3.

Completeness

It explicitly states what ("Comprehensive web quality audit covering performance, accessibility, SEO, and best practices") and when (an explicit "Use when..." trigger clause), satisfying the anchor 3 requirement for both; it is above 2 because the when is explicit, not merely implied.

Trigger Term Quality

The clause "Use when asked to 'audit my site', 'review web quality', 'run lighthouse audit', 'check page quality', or 'optimize my website'" gives good coverage of natural phrases a user would actually say, matching the anchor 3 example; it is not the bare/jargon level of 1 or the partial-coverage level of 2.

Distinctiveness Conflict Risk

The Lighthouse/web-quality niche and triggers like "run lighthouse audit" are distinct and unlikely to fire for unrelated skills; although "optimize my website" is somewhat broad, the overall niche is clear enough for anchor 3 rather than the overlapping-skill level of 2.