The body is lean and bullet-driven with no padding or explanation of concepts Claude already knows; every section earns its tokens, matching the lean-and-efficient anchor.

It gives concrete audit checks to verify and an executable command ("./gradlew :app:smartphone:assembleRelease") plus specific instructions like "Cite file paths and line numbers", so the guidance is concrete and copy-paste ready; it is not 2 because the details are complete.

The numbered Process (1–5) sequences the audit and the Validation section provides an explicit checkpoint with a fallback ("If artifact comparison cannot be run, state the remaining size risk"); it is not 2 because validation is explicit rather than implicit.

No bundle files exist and the body is a compact, well-organized set of clearly headed sections (When To Use, Required Context, Audit Checks, Process, Validation, Output), which per the simple-skills note earns a 3 without external references.

"Audit M3UAndroid APK/AAB size and packaging changes for dependency growth, native libraries, resources, R8/minification, generated assets, baseline profiles, and artifact comparison evidence" lists multiple specific concrete actions in third person, matching the anchor for naming several concrete actions.

It clearly states what the skill does but lacks any "Use when…" clause or equivalent explicit trigger guidance, so per the rubric completeness is capped at 2; it is not 3 because the when is absent, and not 1 because the what is strong.

It surfaces natural Android-development terms a user would actually say — "APK/AAB size", "packaging", "native libraries", "R8/minification", "baseline profiles" — giving good coverage rather than generic jargon.

The narrow M3UAndroid APK/AAB size-audit niche with distinct triggers makes it unlikely to fire for unrelated skills, matching the clear-niche anchor.