Conciseness

The body is lean: an install command, terse bullet rules, one focused JSX example, and precise doc URLs, with no padding or explanation of concepts Claude already knows. Not a 4 because there are essentially no over-explained passages to trim, and every line earns its place.

Actionability

Provides an executable install command ('npx expo install @expo/ui'), a concrete rebuild step, exact import paths, a copy-paste-ready JSX example, and specific doc URLs to confirm APIs. Not a 4 because the examples cover the common case end-to-end and are directly runnable.

Workflow Clarity

As a simple integration skill it presents an unambiguous sequence (install -> rebuild -> wrap trees in Host -> fetch docs to confirm API), and includes an explicit checkpoint ('Confirm with the user before extending'). Not a 4 because the guidance and checkpoint are explicit rather than implicit.

Progressive Disclosure

Under 50 lines with no bundle files, organized into clear sections (Installation, Instructions) and offloading deeper detail to one-level doc URLs. Per the simple-skill exception, this earns full marks for well-organized structure without external references. Not a 4 because the structure and signaling are clean with no organization gaps.

Specificity

Names the domain ('@expo/ui/swift-ui package') and two concrete capabilities ('use SwiftUI Views and modifiers in your app'), but stops at those two without comprehensive coverage. Not a 4 because it does not list several distinct actions, and not a 2 because it does name the domain plus concrete actions rather than only generic ones.

Completeness

It clearly states what the package does ('lets you use SwiftUI Views and modifiers in your app') but provides no 'Use when...' or equivalent trigger clause, which caps completeness at 3 per the rubric. Not a 2 because the 'what' is clear rather than vague, and not a 4 because there is no explicit 'when' guidance.

Trigger Term Quality

Contains relevant terms like 'SwiftUI Views', 'modifiers', and '@expo/ui/swift-ui', with 'SwiftUI' being a phrase a user might naturally say, but it misses common variations and synonyms. Not a 2 because it is not purely generic jargon, and not a 4 because natural-language trigger coverage is thin.

Distinctiveness Conflict Risk

Targets a specific niche (embedding SwiftUI via Expo UI) with low overlap risk against other skills. Not a 5 because without explicit trigger phrasing it is slightly less self-disambiguating, and not a 3 because it is clearly more distinct than broad document/file skills.