The body is lean (~15 lines) with no padding and no explanation of concepts Claude already knows; every section and line earns its place.

For an instruction-only process skill the guidance is concrete and specific, naming the surfaces to target ("CLI binary, API, UI") and the evidence to capture ("outputs, exit codes, logs, or screenshots"); absence of code is not penalized per the code_vs_instruction scoring note.

A clear, well-sequenced 4-step workflow; this is not a destructive or batch operation so the validation-cap does not apply, and step 4's "Report evidence and remaining uncertainty" serves as the closing checkpoint.

Under 50 lines, single-purpose, with no need for external references; the well-organized sections (When to use, Non-goals, Workflow) satisfy the simple-skills allowance for a score of 3.

Names concrete domains ("real app/API/CLI") and actions ("Exercise", "collect observable evidence"), but does not list multiple specific concrete actions comparable to the score-3 anchor; the second clause is a constraint rather than an action.

The "what" is explicit ("Exercise the real app/API/CLI and collect observable evidence"), but there is no "Use when..." clause or equivalent explicit trigger, so completeness is capped at 2 per the judging guidelines.

Includes relevant terms like "end-to-end verification" and "app/API/CLI", but misses common natural variations a user would say (e.g. "check it works", "make sure it runs", "does it actually work").

The framing carves a clear niche (real-surface end-to-end verification explicitly distinguished from unit tests via "tests alone do not count"), making it unlikely to trigger for the wrong skill.