Conciseness

The body contains no explanations of concepts Claude already knows — it is purely steps, two canonical code templates, a compact rules list, and a one-line validation command. The only trimmable redundancy is the repeated docs/ARCHITECTURE.md reference (intro line and step 1), which is trivial, so it fits anchor 5 (lean, every token earns its place) rather than 4.

Actionability

Two complete, executable TypeScript templates (Query and Mutation), a clear type-decision tree, and a concrete validation command ("npx tsc --noEmit") give copy-paste-ready guidance. However, the third declared type — "Pure logic (no API) -> useState + useEffect + cleanup" — has no template, a minor gap that keeps it at anchor 4 rather than 5.

Workflow Clarity

The sequence is clear (read ARCHITECTURE.md 4.4, determine type, create from template, apply rules, validate with tsc) and includes an explicit validation checkpoint. There is no error-recovery feedback loop if tsc fails, so it matches anchor 4 rather than 5; no destructive/batch cap applies since this is file creation.

Progressive Disclosure

The single file is well-sectioned with headers (Steps, Query Hook, Mutation Hook, Rules) and everything in it is needed on every invocation, while the one external reference ("docs/ARCHITECTURE.md section 4.4") is clearly signaled and one level deep. At ~82 lines with two full inline templates it sits above the under-50-line simple-skill case, so anchor 4 rather than 5.

Specificity

"creates React Query hook with caching and error handling" names the domain and a couple of actions, but caching/error handling read as attributes of the hook rather than several distinct actions, and coverage is incomplete (no mention of mutations, invalidation, or list vs. detail hooks). It matches anchor 3 rather than 4, which requires several specific actions with only minor gaps.

Completeness

Both parts are explicit: "Use when adding server state management to a module" answers when, and "creates React Query hook with caching and error handling" answers what. The 'when' is a single concrete trigger without variations or additional trigger phrases, matching anchor 4 rather than the comprehensive anchor 5.

Trigger Term Quality

Relevant keywords are present ("server state management", "React Query", "hook", "caching", "error handling", "module"), but common natural phrasings users would say are missing, such as "data fetching", "custom hook", "useQuery", or "API calls". This fits anchor 3 (some relevant keywords, missing variations) rather than 4 (good coverage with only a few missing).

Distinctiveness Conflict Risk

"React Query hook" combined with "server state management" carves a fairly distinct niche with clear triggers, but it could still overlap with a generic 'create a React hook' or 'data fetching' skill. This is anchor 4 (mostly distinct, minor overlap risk) rather than 5 (clear niche with minimal conflict).