Conciseness

The ~43-line body is lean: every rule is 1-3 lines, filler is handled by naming deletable words ('just', 'simply', 'basically', 'in order to') rather than explaining why, and no concept Claude already knows is taught. Matches 'every token earns its place'; there is no over-explanation to trim for anchor 4.

Actionability

Instruction-only skill with concrete, executable guidance: a specific deletable-word list, a before/after error-message rewrite ('Config not found at ./app.config.ts. Create it or pass --config <path>.' beats 'Error: config missing'), and a specific AI-slop tell list. Per the rubric's code-vs-instruction note, absence of code is not penalized when guidance is this actionable.

Workflow Clarity

Simple single-purpose skill under 50 lines: the single action (apply the rules when writing or editing prose) is unambiguous, and the Output section specifies the deliverable ('show the tightened version and, on request, a one-line note per change'). No destructive or batch operations, so the validation cap does not apply.

Progressive Disclosure

Under 50 lines with no need for external bundle files, so well-organized sections alone satisfy the rubric: four clear sections (Rules, Error messages and UI copy, AI-slop tells, Output) and the one cross-skill reference (domain-modeling's CONTEXT.md) is clearly signaled.

Specificity

Enumerates six concrete prose targets ('READMEs, docs, UI copy, error messages, commit and PR text, release notes'), giving near-comprehensive coverage, but the single action verb 'apply clear-writing standards' is abstract rather than naming concrete operations like 'tighten' or 'strip filler'. Fits anchor 4 (several specifics, minor gaps) better than 3, whose actions are only 1-2; not 5 because the action list is one generic verb.

Completeness

Explicitly answers both: the 'what' ('Apply clear-writing standards to any prose the agent produces' with enumerated artifact types) and the 'when' ('Use when writing or editing documentation... Says "write the README"...') with concrete trigger phrases. Matches the anchor 5 example structure exactly; not 4 because the 'when' clause is fully explicit with quoted triggers.

Trigger Term Quality

Includes genuinely user-spoken quoted triggers ('write the README', 'improve this copy', 'draft the docs', 'word this error') plus 'writing or editing documentation'. A few natural synonyms users would say are missing ('proofread', 'polish', 'rewrite this', 'make it clearer'), so anchor 4 rather than 5, but well above anchor 3's missing-variations level.

Distinctiveness Conflict Risk

The style-and-wording niche is mostly distinct from format-manipulation skills, but the scope 'any text a human will read' is broad and creates minor overlap risk with closely related skills (commit-message generators, docs-writing, docx/pptx skills). Fits anchor 4's 'mostly distinct; minor overlap risk'; not 5 because the unbounded scope prevents a truly clear niche.