The body is lean and assumes Claude's competence — no preamble explaining what TypeScript or comments are, and every section delivers rules plus brief rationale rather than padding.

Concrete, copy-ready guidance throughout: a do/don't acronym table, bad/good comment code blocks, and exact file paths ('packages/shared/src/types.ts') for placing new types.

The no-`any` section gives a clear numbered process (find existing type → define in the right location → use everywhere) and the comment section closes with a 'smell test' checklist; no destructive/batch operation requires a validation loop here.

A single self-contained SKILL.md with well-organized ## sections and no bundle files; references are not needed, so clear organization alone satisfies the anchor.

Lists multiple concrete rules — 'the no-`any` rule and where to put new types, the uppercase-acronym style guide, and the rules for code comments' — matching the anchor for several specific concrete actions.

Explicitly answers both what (the named rules) and when ('Use when writing or reviewing TypeScript in this repo'), satisfying the anchor for clearly answering both.

'Use when writing or reviewing TypeScript in this repo' uses natural phrasing a user would say, supplemented by terms like 'style guide' and 'code comments'; good coverage of common variations.

Scoped to TypeScript standards in this repo with distinct triggers, making it unlikely to fire for unrelated skills.