Conciseness

The body is dense — routing tables, terse bullets, executable code, and library-specific facts with no padding or explanations of concepts Claude already knows. It matches anchor 4 rather than 5 because the Quick Decision Tree largely duplicates the Sub-Skills table and the persistence section inlines contract-level types ("RunStatus, RunRecord, RunStore, defineRunStore, InMemoryRunStore") that could be pushed one level down.

Actionability

Guidance is concrete and mostly executable: copy-paste bash install commands, a complete executable computer-use TypeScript example with exact imports, precise API corrections with code ("useChat({ tools: clientTools(myTool.client(...)) })"), and exact sub-skill paths. It misses anchor 5 only through small gaps, e.g. the @tanstack/ai-code-mode section says just "See the ai-code-mode skill in that package" with no entry path, unlike the other two companion packages.

Workflow Clarity

Routing decisions are unambiguous via two lookup structures plus a fallback ("Debugging mistakes? → Check Common Mistakes in the relevant sub-skill"), and companion-package setup is sequenced (pnpm add → "npx @tanstack/intent@latest install" → explicit entry path). It is anchor 4 rather than 5 because setup flows lack explicit validation checkpoints (e.g., confirming the skills actually wired in after the intent install).

Progressive Disclosure

References are consistently one level deep and well signaled — a "Need to... | Read..." table of sub-skill SKILL.md paths, explicit node_modules entry points for companion packages, and four linked computer-use docs pages. It matches anchor 4 rather than 5 because no actual bundle files ship alongside this SKILL.md (the referenced sub-skill paths resolve outside it), and the ~50-line inline computer-use example plus persistence contract detail could be split one level deeper.

Specificity

The description names ten concrete capability areas ("Routes to chat-experience, tool-calling, media-generation, structured-outputs, adapter-configuration, ag-ui-protocol, middleware, locks, custom-backend-integration, and debug-logging") plus concrete API directives ("Use chat() not streamText(), openaiText() not createOpenAI()"). It matches anchor 4 — several specific items with minor gaps — rather than 5 because most 'actions' are routing targets rather than a comprehensive set of concrete operations, and clearly exceeds anchor 3 (domain plus only 1-2 actions).

Completeness

It has a clear 'what' (an entry point that routes to named sub-skills and corrects API usage) but no 'Use when...' clause or equivalent explicit trigger guidance, so 'when' is only weakly implied. Per the judging guidelines, a missing explicit trigger clause caps completeness at 3 — it is not a 2 because the 'what' is specific and multi-faceted.

Trigger Term Quality

Natural terms users would say are present — "TanStack AI", "tool calling", "computer use", "middleware", "debug logging", "persistence" — giving good keyword coverage (anchor 4). It falls short of anchor 5 because common user phrasings and synonyms like "generate images", "streaming chat UI", "pick a provider", or package file extensions are missing.

Distinctiveness Conflict Risk

"Entry point for TanStack AI skills" ties the description to a clearly named SDK with a well-defined niche, and every listed capability is prefixed by that library context, giving minimal conflict risk with unrelated skills. Overlap with its own sub-skills is the intended routing behavior, so anchor 5 (clear niche with distinct triggers) fits better than anchor 4.