Conciseness

Quotes: 'Schema is the single source of truth...', 'No other dependencies. Zod is bundled...', the 5 Primitives table, and dense code blocks throughout. The body is lean and assumes Claude's competence — no React or state-management basics are explained, and every section teaches the library's own model — but the hardcoded 'model: 'claude-sonnet-4-6'' is version-sensitive information that will go stale, a minor instance of tokens that could be trimmed (anchor 4 rather than 5's 'every token earns its place').

Actionability

Quotes: 'npm install stackpack-state', the full defineStore template, 'const { update } = useStore<TodosState>('todos')', 'const result = await store.optimistic({...})'. Guidance is real, executable TypeScript (not pseudocode) covering the common cases — store definition, reads, writes, presence, gates, undo, optimistic rollback, actors — matching anchor 5's coverage; however it lands at anchor 4 ('minor gaps') because 'useStore' is used in the hooks section but is missing from the import statement at the top, so that block is not fully copy-paste ready.

Workflow Clarity

The body flows in a clear sequence — Quick Start (install/imports) → conceptual model ('Every state decision maps to one of these') → store template → hooks → undo/optimistic → actors → pitfalls — with error-recovery patterns ('if (!result.success) showToast(...)', '{ skipUndo: true }' for gate-controlling mutations) and a gotchas checklist. It sits at anchor 4 rather than 5 because there is no explicit step-by-step workflow for the skill's own declared use case (migration from useState/Redux/Zustand/Jotai/XState), which is deferred entirely to skill/refactoring.md, and no validation checkpoints — though none are strictly required since no destructive or batch operations are instructed.

Progressive Disclosure

Quotes: 'read skill/skill.md — Pattern catalog, decision trees, 10+ store patterns', 'skill/api-reference.md — Every hook, component, and type signature', 'skill/examples.md', 'skill/refactoring.md'. The body itself is a well-organized, well-signaled overview with one-level-deep references that would match anchor 5's shape, but scored against the actual bundle: none of these referenced files exist in the bundle (no skill/, references/, scripts/, or assets/ directories), so the disclosure chain is broken and the pointers are unverifiable — a real organizational gap that drops it to anchor 3 ('could be better organized; references present but...').

Specificity

Quotes: 'Agent-first React state management', 'user asks to manage state or create stores', 'user migrates from useState/Redux/Zustand/Jotai/XState'. It names the domain and several concrete actions (create stores, migrate from five named libraries), matching anchor 4's 'several specific actions; minor gaps' — it never states the library's distinctive capabilities (schema-derived stores, undo, optimistic updates), so it falls short of anchor 5's comprehensive coverage, while clearly exceeding anchor 3's '1-2 concrete actions'.

Completeness

Quotes: 'Agent-first React state management. Use when: project has stackpack-state as dependency, user asks to manage state or create stores...'. Both questions are answered explicitly: a clear 'what' (agent-first React state management) and a literal 'Use when:' clause with four concrete trigger conditions plus pointers to deeper docs — matching anchor 5 ('clearly and explicitly answers both what AND when with concrete trigger phrases'); anchor 4's weakness ('when' could be more explicit) does not apply.

Trigger Term Quality

Quotes: 'user asks to manage state or create stores', 'user mentions Together/Separate/When/Gate/Presence patterns', 'user migrates from useState/Redux/Zustand/Jotai/XState'. Coverage is comprehensive for the domain: natural generic phrases ('manage state', 'create stores'), every major competing library a user would name, the package name, and the library's own pattern names. This matches anchor 5 ('comprehensive coverage of natural terms including synonyms') rather than anchor 4, which is defined by missing natural terms.

Distinctiveness Conflict Risk

Quotes: 'project has stackpack-state as dependency', 'user mentions Together/Separate/When/Gate/Presence patterns', 'user asks to manage state or create stores'. The package- and pattern-specific triggers create a clear niche with minimal conflict risk, but the standalone trigger 'user asks to manage state or create stores' is broad enough to fire in projects using other state libraries — a minor overlap with closely related skills, matching anchor 4 rather than anchor 5's 'minimal conflict risk'.