Conciseness

The body is code-first and mostly efficient, but there is avoidable duplication and padding: the 'When to Use What' table repeats the 'Quick Reference' table, the 'Common Patterns Cheat Sheet' re-shows match/fold patterns already demonstrated, and filler like "No jargon, just code that works" and "Maybe It's There, Maybe Not" adds tokens without information. It is not a 2 because the bulk is genuinely useful, non-redundant code with brief explanations.

Actionability

Mostly executable, concrete TypeScript throughout — hooks, validation, RemoteData, and React 19 patterns are real code rather than pseudocode, matching anchor 4. It falls short of 5 because several snippets are not copy-paste ready: `useState`/`useMemo`/`useEffect` imports are missing in the form, theme, and RemoteData examples, and helpers like `submitToServer`, `fetchUser`, `Spinner`, and `UserCard` are undefined.

Workflow Clarity

As a pattern catalog rather than a sequential workflow, it is well sequenced: 'When to Use This Skill' up front, a Quick Reference table, numbered topic sections, and decision tables for choosing a type. No destructive or batch operations exist, so no validation cap applies; it misses 5 only because there is no explicit guidance for composing the patterns into an end-to-end flow.

Progressive Disclosure

Sections are clearly headed and navigable, but the entire ~800-line catalog is inlined in SKILL.md with no references/ files at all — no bundle files exist. Content like the React 19 patterns, dependency injection, and cheat-sheet sections clearly belongs in separate reference files, matching anchor 3 ('content that should be separate is inline'). Not 2, since structure and headers are present and content is not a monolithic wall of text.

Specificity

The description names the domain (fp-ts with React) and lists several concrete capability areas — "hooks, state, forms, data fetching" — matching the 'several specific actions; minor gaps in coverage' anchor. It falls short of 5 because those are topic areas rather than fully concrete actions and coverage is incomplete (no mention of error accumulation, RemoteData, or testing patterns).

Completeness

Both parts are present and explicit: the 'what' ("Practical patterns for using fp-ts with React - hooks, state, forms, data fetching") and the 'when' ("Use when building React apps with functional programming patterns"), matching anchor 4. Not 5 because the 'when' clause could name more concrete trigger phrases (e.g. 'when the user mentions fp-ts, Either, or TaskEither').

Trigger Term Quality

Good natural keyword coverage: "fp-ts", "React", "hooks", "state", "forms", "data fetching", "functional programming patterns", plus version triggers "React 18/19, Next.js 14/15". Not 5 because common synonyms a user might say are missing — e.g. "TypeScript", "Either/Option/TaskEither", "monads".

Distinctiveness Conflict Risk

"fp-ts with React" is a clear, narrow niche with distinct triggers; only the version note ("Works with React 18/19, Next.js 14/15") could marginally overlap with generic React skills, which is minimal conflict risk. The voice is third person throughout, so no penalty applies.