Conciseness

The ~30-line body is lean and assumes Claude's competence: it never explains what an emulator or the CLI is, and every sentence either gives a command or a policy ("Do not probe first with --help...", "Treat installation and upgrades as user-owned setup steps"). This matches the 'every token earns its place' anchor; there is no padding to trim for level 4.

Actionability

Concrete, executable commands are given for every entry point — `npm install -g agent-device@latest`, `agent-device open <app-or-package-id> --platform android --foreground`, and five `agent-device help <topic>` commands. However, no example of an actual follow-up interaction command (tap/type/scroll after opening) is shown — that detail is delegated to the tool's "initial interactive snapshot and corrective error hints" — which is a minor gap fitting the 'mostly executable, concrete commands with minor gaps' anchor rather than the fully-covered level 5.

Workflow Clarity

For a simple, single-purpose skill the flow is unambiguous and correctly ordered: require user-owned install → open with explicit platform flag → follow the interactive snapshot and corrective hints → on unavailability, stop and ask the user → consult version-matched help only for specialized tasks. There is an explicit error-recovery path ("If the shell reports that agent-device is unavailable, stop and ask the user") and a corrective feedback loop via the snapshot hints, so it exceeds the level-4 anchor with its minor validation gaps.

Progressive Disclosure

No bundle files exist (references/, scripts/, assets/ are absent) and the body is under 50 lines, so per the rubric's simple-skill guideline well-organized short content can score 5. The only deferred content is one level deep and clearly signaled with a condition — "Only when the task is specialized or a command shape is unclear, read the relevant version-matched help topic" — with each topic annotated (e.g., "engineering validation and build freshness").

Specificity

The description enumerates multiple concrete actions — "launch an app, inspect its live UI, tap, type, scroll, validate a code change, collect failure evidence, or reproduce a workflow" — giving comprehensive coverage of the app-driving domain. It matches the anchor for multiple specific concrete actions with comprehensive coverage, not the level-4 anchor that requires minor gaps in coverage.

Completeness

Both parts are explicit: the 'what' is "Verify and debug native, React Native, Expo, or Flutter apps on an Android Emulator with agent-device" and the 'when' is an explicit "Use when an agent needs to..." clause with concrete trigger phrases. This clearly matches the level-5 anchor answering both what and when with concrete triggers, and exceeds level 4 where the 'when' is only generally stated.

Trigger Term Quality

Good natural keyword coverage: "launch an app", "tap, type, scroll", "validate a code change", "Android Emulator", "React Native", "Expo", "Flutter", "reproduce a workflow" are phrases users would naturally say. A few common variants are missing (e.g., "test my app", "run the app", "AVD", ".apk"), so it fits the 'good coverage with a few natural terms missing' anchor rather than the comprehensive synonym/extension coverage of level 5.

Distinctiveness Conflict Risk

It occupies a clear niche — device driving on an Android virtual device via the specific `agent-device` tool, explicitly scoping platform ("Android Emulator", "--platform android" implied domain) and frameworks (native, React Native, Expo, Flutter). Triggers are distinct and unlikely to fire for unrelated skills, matching the minimal-conflict anchor; it is clearly more distinct than the level-4 'minor overlap with closely related skills' example.