The body is lean and well-organized with no padding of concepts Claude already knows; the "Understanding Package Contents" list is concise operational reference that earns its place. It is above the 2-anchor because nothing needs tightening.

It gives a fully executable, copy-paste-ready command ("bash scripts/list-package-files.sh") referencing a real bundle script, matching the 3-anchor for executable guidance.

For this simple single-action skill the instruction is unambiguous, and the script's described sequence (build, pack, list, clean up) is clearly stated; the listing output itself serves as the verification checkpoint.

A short, single-purpose skill with well-organized sections and a one-level reference to the existing scripts/list-package-files.sh, matching the simple-skills allowance for a 3 with just well-organized sections.

It names one concrete action ("List the contents of an npm package tarball before publishing") but, unlike the 3-anchor, does not list multiple distinct concrete actions. It is specific rather than vague, so it is above 1.

It explicitly answers both what ("List the contents of an npm package tarball before publishing") and when ("Use when the user wants to see what files are included in an npm bundle, verify package contents, or debug npm publish issues"), matching the 3-anchor with an explicit 'Use when' clause.

It covers natural terms users would say — "npm package tarball," "npm bundle," "package contents," and "npm publish issues" — matching the 3-anchor's good coverage of natural variations.

It occupies a clear niche (inspecting an npm tarball before publish) with distinct, domain-specific triggers unlikely to fire for unrelated skills.