Conciseness

The body is short, but the 'Quick Reference' bullets nearly restate the opening sentence, the 'Explain' section ('Explain how duplicate access keys affect keyboard accessibility') is pure padding, and the harm of duplicate accesskeys is knowledge Claude already has. Mostly efficient with some unnecessary content that could be trimmed — matches anchor 3, not 4.

Actionability

Every instructional section is a one-line abstract hint: 'Check for duplicate accesskey attributes across the document' and 'Assign unique values to each accesskey attribute or remove redundant ones' give no technique — no selector, command, or tool. Matches anchor 2 (high-level hints missing the specific steps); not 3 because there is no partial or pseudocode-level concrete method anywhere in the body.

Workflow Clarity

Check → Fix → Code Review gives a rough sequence for this simple single-purpose skill, but verification is only alluded to ('note how to verify the fix with browser accessibility tooling') rather than given as an explicit checkpoint or feedback loop. Sequence present with implicit checkpoints — matches anchor 3, not 4.

Progressive Disclosure

A short, well-sectioned overview with a clearly signaled, one-level-deep pointer to the real references/rule.md (verified to exist, 49 lines, containing the code example the body lacks) plus the source rule URL. Matches the anchor-5 pattern of a concise overview with well-signaled single-level references.

Specificity

The description lists several concrete inspection actions ('Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output') plus the accesskey domain. It falls short of 5 because the actions are generic accessibility-review boilerplate rather than accesskey-specific capabilities, and the core 'what' is grammatically embedded as 'related to Ensure accesskey values are unique' instead of a clean capability statement.

Completeness

Both parts are present: an explicit 'Use when reviewing rendered HTML, interactive components, or design-system patterns...' trigger clause, and a 'what' conveyed through the inspection actions. Not a 5 because the 'what' is awkwardly stated — the capability is bolted on as 'related to Ensure accesskey values are unique' rather than leading with a clear verb-first statement of what the skill does.

Trigger Term Quality

Good keyword coverage including natural phrases a user would say: 'rendered HTML', 'interactive components', 'design-system patterns', 'accesskey', 'keyboard behavior'. Missing common synonyms such as 'keyboard shortcuts' or 'accessibility audit' that would merit a 5, but coverage exceeds the partial coverage of a 3.

Distinctiveness Conflict Risk

The accesskey phrase anchors a specific niche, but the long generic inspection checklist ('keyboard behavior, focus flow, accessible names, and screen-reader output') is boilerplate likely shared across sibling accessibility-rule skills, creating overlap risk with closely related a11y review skills. Somewhat specific, but the generic action list dilutes distinction enough to keep it below 4.