Names the domain (Compose Multiplatform/Jetpack Compose in KMP projects) and lists several topic areas (state management, navigation, theming, performance, platform-specific UI), but these are categories rather than concrete actions. No verbs describing what the skill actually does (e.g., 'generates components', 'configures navigation graphs').

Describes the 'what' at a high level (Compose patterns for KMP projects) but completely lacks a 'Use when...' clause or any explicit trigger guidance. Per the rubric, a missing 'Use when...' clause should cap completeness at 2, and the 'what' itself is also somewhat vague (patterns rather than actions), bringing this to 1.

Includes strong natural keywords users would say: 'Compose Multiplatform', 'Jetpack Compose', 'KMP', 'state management', 'navigation', 'theming', 'performance', 'platform-specific UI'. These are terms developers naturally use when working in this domain.

The combination of 'Compose Multiplatform', 'Jetpack Compose', and 'KMP projects' creates a very clear niche. This is unlikely to conflict with other skills unless there are multiple Compose/KMP skills, as the technology stack is highly specific.

Generally efficient with good code examples, but includes some unnecessary commentary (e.g., 'Patterns for building shared UI across...' intro, 'When to Activate' section that restates obvious triggers, and inline comments like '// Stateless composable — easy to preview and test' that Claude already knows). Could be tightened but not egregiously verbose.

Provides fully executable, copy-paste-ready Kotlin code for every pattern — ViewModel state management, navigation setup, slot-based composables, performance optimizations, and theming. Includes concrete good/bad comparisons (e.g., allocation avoidance) and specific API usage.

The skill presents patterns as independent reference sections rather than multi-step workflows, which is appropriate for a patterns guide. However, there are no validation checkpoints or feedback loops — for example, no guidance on verifying recomposition behavior, testing composable previews, or validating navigation graph correctness. Since this is a patterns reference rather than a destructive workflow, this is acceptable but could benefit from testing/verification guidance.

Content is well-organized with clear section headers and references to related skills at the bottom. However, the file is quite long (~200+ lines of inline content) and could benefit from splitting detailed sections (e.g., Navigation, Performance, Theming) into separate reference files with brief summaries in the main skill. The references at the end are good but minimal.