Conciseness

The body is lean throughout: the intro conveys non-obvious responsibility boundaries ('The renderer owns markup, styles, semantics, and interaction accessibility'), and every 'Essential constraints' bullet is a library-specific gotcha (stable 'features/data/columns', losing the 'this' receiver on 'const { getValue } = row') rather than generic explanation Claude already has. No padded sections or over-explanation found, matching the 'every token earns its place' anchor.

Actionability

The 'Minimal setup' snippet is complete, copy-paste-ready TypeScript covering the common case (features registry, column helper, data, 'getRowId', iterating 'getRowModel().rows'), and it includes concrete commands such as the 'node_modules/@tanstack/table-core/dist/index.d.ts' discovery starting point and 'intent load <package>#getting-started'. Specific examples cover the common cases per the top anchor.

Workflow Clarity

The body sequences work clearly (setup example -> hard constraints -> task-keyed routing table -> API discovery path) and includes decision points like 'Optional APIs and state exist only after their feature is registered' and 'read it when the expected export or declaration path is absent'. It stops short of the top anchor's explicit validation/error-recovery checkpoints; while no destructive or batch operations require them, no feedback loop is offered for, e.g., verifying a feature is registered before its API is used.

Progressive Disclosure

The SKILL.md is a compact overview with bulk detail correctly pushed to one-level-deep, verified bundle files (references/typescript.md, references/api-not-found.md, references/rows.md all exist and are each scoped to a single task), clearly signaled via a task-to-file routing table plus targeted pointers like 'read it when the expected export or declaration path is absent'. This matches the clear-overview/well-signaled-references anchor.

Specificity

Names the domain and several specific coverage areas: 'TanStack Table v9 core architecture, stable data and columns, and inferred types' plus routing targets ('setup, missing APIs, row models, state, features, and framework-specific work'). These are concrete topics but read more as areas than fully concrete actions like 'extract text / fill forms / merge documents', and coverage has minor gaps, matching the 'several specific actions; minor gaps' anchor rather than comprehensive top-level coverage.

Completeness

The 'what' is clear ('Use TanStack Table v9 core architecture, stable data and columns, and inferred types') and the second sentence functions as explicit trigger guidance ('Route setup, missing APIs, row models, state, features, and framework-specific work'), so the 'Use when...' equivalent is present. It falls short of the top anchor because the trigger phrasing is an imperative routing list rather than explicit 'use when...' trigger phrases tied to user situations.

Trigger Term Quality

Good keyword coverage of terms a user of this library would naturally say: 'TanStack Table', 'v9', 'columns', 'data', 'row models', 'state', 'missing APIs', 'framework'. A few natural terms are missing, e.g. '@tanstack/react-table', adapter names like 'react-table', or feature words users say like 'sorting' and 'column defs', so it sits at 'good keyword coverage; a few natural terms missing' rather than comprehensive synonym/extension coverage.

Distinctiveness Conflict Risk

'TanStack Table v9' pins a clear niche with library- and version-specific triggers, minimizing conflict with unrelated skills. Minor overlap risk remains with closely related sibling skills (table-state, table-features, framework getting-started) since 'state, features, and framework-specific work' are exactly those skills' domains, matching 'mostly distinct; minor overlap risk with closely related skills'.