Conciseness

The body is code-first with tight one-line rationale comments (e.g. "WhileSubscribed(5_000) keeps the upstream active for 5 seconds after the last subscriber leaves — survives configuration changes"), matching the efficient-with-minor-trimming anchor. It is not a 5 because the basic Dispatchers section ("CPU-intensive work" / "IO-bound work") restates knowledge Claude already has.

Actionability

Every section provides complete, copy-paste-ready Kotlin: coroutineScope+async parallel decomposition, stateIn/combine patterns, debounce+flatMapLatest search with catch, retryWhen exponential backoff, SharedFlow effects with Compose collection, ensureActive, try/finally cleanup, Turbine tests, and a full fake repository. This matches the anchor for fully executable examples covering the common cases.

Workflow Clarity

This is a pattern-library skill with no multi-step destructive or batch operations, so no validation cap applies. Sections sequence logically (concurrency → flows → dispatchers → cancellation → testing → anti-patterns) with a "When to Activate" entry list and an anti-patterns checklist. It is a 4 rather than 5 because there is no explicit decision guidance connecting the patterns into an overall workflow for choosing among them.

Progressive Disclosure

The single-file body is well-organized with clear section headers and a References section that clearly signals related skills (compose-multiplatform-patterns, android-clean-architecture), with no nested or buried references. It is a 4 rather than 5 because at ~280 lines with no bundle files, detail-heavy content such as the testing section could be split into a reference file, and the under-50-line single-file exception does not apply.

Specificity

The description lists five specific capability areas — "structured concurrency, Flow operators, StateFlow, error handling, and testing" — which matches the anchor for several specific items with minor gaps. It is not a 5 because the items are topic nouns rather than concrete actions and coverage omits cancellation, dispatchers, and SharedFlow.

Completeness

The description has a clear "what" ("Kotlin Coroutines and Flow patterns for Android and KMP — structured concurrency, Flow operators, StateFlow, error handling, and testing") but no "Use when..." clause or equivalent explicit trigger guidance, which caps completeness at 3 per the rubric guidelines. "for Android and KMP" only weakly implies the "when".

Trigger Term Quality

"Kotlin Coroutines", "Flow", "StateFlow", "Android", and "KMP" are exactly the natural terms a user would say when needing this skill. It falls short of a 5 because common variations like "suspend functions", "reactive streams", or "async" are missing.

Distinctiveness Conflict Risk

"Kotlin Coroutines and Flow... for Android and KMP" carves a clear technical niche with minimal conflict risk. It is a 4 rather than 5 because closely related skills exist (the body itself cross-references compose-multiplatform-patterns and android-clean-architecture), creating minor overlap risk.