Conciseness

Almost every section is commands plus terse, domain-specific caveats (sampled-vs-wall-clock limits, heapprofd buffer health) that Claude would not reliably know, so it is not verbose in the rubric's sense. Not 5 because some blocks could be tightened — e.g., the ~20-line inline file-size polling loop and repeated warnings about pulling stable trace files.

Actionability

Fully executable copy-paste bash for every capture path: simpleperf record/stop/pull, the bundled report scripts with arguments, Perfetto background + flush-wait + pull, gfxinfo reset/framestats, am dumpheap + shark-cli, and a complete heapprofd config. Placeholders (SERIAL, PACKAGE, ARTIFACT_DIR, SKILL_DIR) are all defined, and the '...when supported by the installed Simpleperf' hedges are explicitly justified tool-availability notes, not pseudocode.

Workflow Clarity

The 5-step Core Workflow is sequenced per tool with explicit validation checkpoints and recovery loops: preflight 'dumpsys package ... grep DEBUGGABLE|profileable', the 'Operation not permitted' → Ctrl-C fallback, 'discard that capture' rule for gfxinfo on ANR screens, wait-for-stable-size before pulling traces, and the final Report checklist with caveats and next-step guidance. Not 4: checkpoints are explicit, not implicit.

Progressive Disclosure

Scored against the actual bundle (scripts/simpleperf_hotspots.sh and scripts/heapprofd_reports.sh — both exist and are referenced with full invocation lines and expected outputs), and the cross-skill pointer to ../android-emulator-qa/SKILL.md is clearly signaled. Not 5: the SKILL.md carries ~280 lines with all per-tool interpretation detail inline; the 'Reading Simpleperf' guidance and Perfetto inspection notes are candidates for references/ files, and there is no references/ tier at all.

Specificity

Names the domain (Android performance on an adb target) and enumerates multiple concrete evidence types — 'Simpleperf CPU profiles, Perfetto or Compose traces, gfxinfo frame data, dumpsys meminfo snapshots, Java heap dumps, and native allocation traces' — matching the comprehensive-coverage anchor. It does not sit between anchors: score 4 ('minor gaps in coverage') would understate the tool-by-tool enumeration.

Completeness

Explicitly answers both: 'what' is gather and interpret Android performance evidence with a concrete tool list, and 'when' via 'Use when asked to profile an Android app flow, ... diagnose jank, ... or gather memory/leak profiling artifacts.' Matches the anchor example structure exactly; neither half is vague or implied.

Trigger Term Quality

Triggers like 'profile an Android app flow', 'find CPU-heavy functions', 'diagnose jank', 'compare before/after performance', and 'memory/leak profiling' are phrases users naturally say, but a few common variations are missing (e.g., 'app is slow/laggy', 'optimize performance', 'startup time'). Not 5 (no synonym/extension-level coverage such as '.hprof' or 'reduce battery/CPU usage'); clearly above 3 because most natural phrasings are present.

Distinctiveness Conflict Risk

A clear niche (Android device performance profiling via adb tooling) with tool-specific triggers ('Simpleperf', 'gfxinfo', 'jank', 'adb target') that no generic analysis or debugging skill would claim. Minimal overlap risk; not 4 because there is no closely related skill in this space whose triggers it shares.