Conciseness

The body is short, sectioned, and free of padding; it fits 'efficient; minor instances of over-explanation that could be trimmed'. The opening sentence ("Skip links allow keyboard and screen reader users to bypass repetitive navigation links, saving them significant time and effort") and the "Explain" section restate the same well-known benefit Claude already knows, keeping it below 5.

Actionability

Quick Reference bullets ("Add a skip link as the first focusable element", "Link it to the main content container ID") are concrete directives, but the body contains no executable detail — the crux of the fix (how to hide the link off-screen and reveal it on :focus) lives entirely in references/rule.md. This matches 'some concrete guidance but incomplete; missing key details' rather than 4, which requires concrete code or commands in the content itself.

Workflow Clarity

The section sequence (Quick Reference → Check → Fix → Explain → Code Review) is coherent and single-purpose, and the Code Review section explicitly requires noting "how to verify the fix with browser accessibility tooling or assistive tech" — clear sequence with most checkpoints present. Not 5 because the body's verification is a mention rather than a specified step, and not 3 because verification is explicitly required and fully specified one level deep in the reference's Verification section.

Progressive Disclosure

A short overview body with well-signaled, one-level-deep references: "see `references/rule.md`" points to a real file that contains the code examples and verification detail, and rule.md itself chains no further references. This matches the anchor for a clear overview with well-signaled one-level-deep references (and the under-50-lines guideline); only the minor overstatement 'framework-specific guidance' — which rule.md doesn't actually contain — keeps it from being flawless.

Specificity

Lists several concrete inspection actions — "Check native semantics first, then inspect keyboard behavior, focus flow, accessible names, and screen-reader output" — which matches the anchor for several specific actions with minor gaps. It is not 5 because it never states the skill's primary capability (implementing/adding skip links) as a direct action, only review-side checks.

Completeness

Both parts are present: an explicit trigger ("Use when reviewing rendered HTML, interactive components, or design-system patterns related to…") and a what (the check/inspect sequence). It falls short of 5 because the 'what' describes verification methodology rather than clearly stating what the skill does (implement and verify skip links), and the awkward 'related to Implement…' phrasing blurs the capability statement.

Trigger Term Quality

Includes the natural phrase users would say ("Skip to Content" links) plus "rendered HTML", "keyboard behavior", "focus flow", "screen-reader output" — good keyword coverage. Below 5 because common synonyms like "skip navigation", "bypass blocks", or "a11y/WCAG" are absent.

Distinctiveness Conflict Risk

The skip-link niche is clear and the trigger conditions are specific enough to avoid firing for unrelated skills. Minor overlap risk remains with sibling accessibility skills that share the same "reviewing rendered HTML / interactive components / keyboard behavior / accessible names" framing.