Conciseness

The deployment and runtime-limitation content is efficient, but several sections re-teach standard web development Claude already knows: 'Headers' and 'JSON Body' examples (URL/searchParams, request.headers.get, await request.json()), a generic try/catch 'Error Handling' example, 'Use fetch instead of node-fetch', and Rules like 'Use proper HTTP status codes' and 'Use TypeScript for type safety'. This matches the level-3 anchor ('mostly efficient but includes some unnecessary explanation or could be tightened') rather than level 4, since multiple sections could be cut entirely.

Actionability

Fully executable throughout: copy-paste-ready TypeScript route handlers, exact commands ('npx expo export -p web', 'npx eas-cli@latest deploy --prod', 'eas env:create --name OPENAI_API_KEY ... --environment production'), curl test commands, and complete EAS Workflow YAML examples covering both production and PR-preview cases. This matches the level-5 'copy-paste ready... covers the common cases' anchor.

Workflow Clarity

The deployment flow is clearly sequenced — prerequisites ('npm install -g eas-cli; eas login'), local testing ('npx expo serve' + curl), export, preview/production deploy, env vars, custom domain, automation — with the local-test step acting as a pre-deploy checkpoint. It falls short of level 5 because there is no post-deploy verification step (e.g., curl the deployed URL or check deploy output), but no destructive/batch-operation cap applies.

Progressive Disclosure

Section headers give the document structure and the cross-reference to the 'eas-workflows' skill is clearly signaled, but the skill ships no bundle files at all: roughly 300 lines of API-route authoring reference (HTTP methods, request handling, CORS, database options, common patterns) are inlined in SKILL.md where they belong in a separate reference file. This matches the level-3 anchor ('content that should be separate is inline') better than level 4's 'most content is appropriately placed'.

Specificity

The description lists multiple concrete actions — 'export the web bundle, run eas deploy for production and PR preview URLs, manage environment secrets and custom domains, and work within the Cloudflare Workers runtime' plus '+api.ts handlers, HTTP methods, request handling, CORS' — with comprehensive coverage across deployment, configuration, and route authoring. It exceeds the level-4 anchor ('minor gaps in coverage') because no significant capability area is missing.

Completeness

Both questions are explicitly answered: a clear 'what' (deploy, manage secrets/domains, author API routes, Cloudflare Workers runtime) and an explicit 'Use when deploying an Expo web app or API routes, setting up EAS Hosting, or configuring hosting environments and domains' trigger clause with concrete phrases. It matches the level-5 anchor exactly; the level-4 anchor's 'when could be more explicit' does not apply.

Trigger Term Quality

Good keyword coverage with natural phrases users would say ('deploying an Expo web app or API routes', 'setting up EAS Hosting', 'configuring hosting environments and domains') plus synonyms ('Expo websites' / 'Expo web app') and the '+api.ts' file pattern. A few natural terms a user might say, such as 'backend' or 'serverless/edge functions', are absent, keeping it just below the comprehensive level-5 anchor.

Distinctiveness Conflict Risk

A clear niche (EAS Hosting / Expo web deployment and API routes) with an explicit disambiguation boundary — 'Not for native builds or store releases - use the eas-app-stores skill for those' — minimizing conflict with related Expo skills. This fits the level-5 'clear niche with distinct triggers' anchor.