Conciseness

The body is a lean checklist — no concept explanations (no 'what is CVA', no library tutorials), no padded sections, no repeated context. Every line is an instruction, matching anchor 5 ('every token earns its place'). Not 4 because there are no trimmable over-explanations anywhere.

Actionability

Concrete paths ("packages/components/src/<component-name>/"), an exact file-structure tree, and exact commands ("npm run lint", "npm run typecheck") with minor gaps — "Run tests to ensure they pass" lacks the actual command and no starter code template is provided. Matches anchor 4; not 5 because guidance is not fully copy-paste ready throughout.

Workflow Clarity

Steps 1–10 are clearly sequenced and end in an explicit Verify step with two concrete commands plus Storybook and test checks — anchor 4. Not 5 because there is no error-recovery feedback loop (e.g. 'if lint fails, fix and re-run'); this is a generative, non-destructive task so the validation cap does not apply.

Progressive Disclosure

A self-contained SKILL.md with no bundle files (references/, scripts/, assets/ are absent) and well-organized sections; its example pointers ("badge/", "button/", "combobox/") reference real repo paths one level deep, clearly signaled. Anchor 4 rather than 5 because the body (~82 lines) exceeds the under-50-line allowance and the Examples section could point to a concrete reference component template in a bundle file.

Specificity

Lists concrete deliverables ("component, styles, tests, stories, and documentation") but the action itself is a single one — "Create a new Spark UI component" — so it matches anchor 4 (several specifics, minor gaps) rather than anchor 5's multiple distinct actions. It is well above anchor 3 since the artifact coverage is comprehensive.

Completeness

Explicitly answers both what ("Create a new Spark UI component with complete file structure including component, styles, tests, stories, and documentation") and when ("Use when the user wants to create a new component or add a component to the design system") with concrete trigger phrases — a direct match for the anchor-5 example pattern. Not 4 because the 'when' clause is fully explicit, not just present.

Trigger Term Quality

Natural phrases present: "create a new component", "add a component to the design system" — these are phrases users would actually say. A few natural variations (e.g. "new UI component", "implementing from a design") that appear in the body are missing from the description, matching anchor 4 rather than 5.

Distinctiveness Conflict Risk

"Spark UI" and "design system" ground it in a clear niche, but the trigger phrase "create a new component" is generic enough to fire for component requests in non-Spark projects — minor overlap risk with closely related skills, matching anchor 4. Not 5 because the unqualified 'new component' trigger is not niche-distinct.