Conciseness

The body avoids explaining concepts Claude already knows and is mostly pointers, but the same routing information is restated four times (Quick Reference table, dot graph, numbered decision tree, Example Invocations), and the dot graph exactly duplicates the numbered list. Mostly efficient, but noticeably could be tightened.

Actionability

Routing guidance is concrete and executable — exact file pointers per situation ("Read: `skills/transferable-ref.md`"), a concrete agent command ("`/axiom:audit swift-simplify`"), and 12 worked user-to-reference examples. Minor gaps: the agent fallback path ('search Axiom's skills for `skills/<agent>.md`') is a search instruction rather than an exact path.

Workflow Clarity

This is a single-purpose router skill and the single action — route to the correct reference file — is unambiguous, supported by three lookup mechanisms (table, decision tree, examples) plus explicit conflict-resolution rules for edge cases. The simple-skill exception applies; no destructive or batch operations require validation checkpoints.

Progressive Disclosure

References are clearly signaled and one level deep by design, but none of the six referenced files (`skills/swift-modern.md`, `skills/ownership-conventions.md`, `skills/transferable-ref.md`, `skills/deep-link-debugging.md`, `skills/tvos.md`, `skills/swift-simplifier.md`) exist in the bundle — no references/, scripts/, or assets/ directories are present. Navigation fails at the first hop as bundled, matching anchor 2 rather than 3 (the problem is existence, not signaling).

Specificity

The description names the domain ("Swift or its toolchain") and lists concrete topic areas ("modern idioms, noncopyable types, drag and drop, debug deep links, tvOS targets"), but contains no action verbs describing what the skill actually does, so coverage of capabilities is incomplete rather than comprehensive.

Completeness

The 'when' is explicit and well-bounded ("Use when the question is about Swift or its toolchain rather than a framework"), but the 'what' is only weakly implied by the trailing topic list — no action statement tells what the skill does. This sits above anchor 2 (the topic list does convey scope) but below anchor 4 (no clear 'what').

Trigger Term Quality

Natural user-facing terms like "Swift", "toolchain", "noncopyable types", "drag and drop", "debug deep links", and "tvOS" give good keyword coverage, though common synonyms users would say (e.g., "ownership", "borrowing", "Transferable") are absent.

Distinctiveness Conflict Risk

The explicit boundary "rather than a framework" cleanly separates this from framework/SwiftUI skills, and the niche triggers are distinct. Minor overlap risk remains for drag-and-drop and deep-links topics that users might route to a swiftui or integration skill.