Conciseness

The body teaches nothing Claude already knows (no 'what is Storybook' padding) and every paragraph carries operational rules, but the exact prerelease version patterns ("11.0.0-alpha.x", "0.0.0-pr-*") are trimmable version-specific detail that will age. Fits anchor 4 (efficient with minor instances that could be trimmed); not 5 for those instances, not 3 because there is no genuine over-explanation.

Actionability

Concrete executable anchors are present: "npx storybook skills ui-workflow", probing "http://localhost:6006", "npm run storybook", and the /storybook-init and /storybook-upgrade invocations. Not 5 because the actual story-writing workflow is delegated entirely to the command output with no fallback if that command fails or is unavailable; not 3 because everything written is concrete and executable.

Workflow Clarity

Prerequisites are explicit numbered gates (install, version 11.0+) and the dev-server section has checkpoints ("probe the URL", "Reuse a dev server", "Wait until the URL responds"). Not 5 because there is no in-body checkpoint that story tests pass before publishing the review (validation is implicit in the external workflow); not 3 because sequencing and gates are clearly present.

Progressive Disclosure

The body is ~25 lines with no bundle files (references/, scripts/, assets/ are absent), organized into prerequisites, the workflow-fetch command, and dev-server guidance, with detail fetched on demand via "npx storybook skills ui-workflow". This meets the rubric's simple-skill exception: under 50 lines, no external references needed, well-organized sections.

Specificity

Quotes: "look up the components to reuse, write and update stories, run story tests, and publish a review of the result" plus "shows existing components or stories in a review" — multiple concrete actions covering the full workflow (lookup, authoring, testing, review, display). Matches the anchor 5 example's breadth; not 4 because coverage is comprehensive rather than 'several actions with minor gaps'.

Completeness

Both elements are explicit: a concrete 'what' and "Use when the project's agent instructions (such as AGENTS.md) or the user ask for it". Not 5 because the 'when' is request-based rather than concrete task trigger phrases (e.g. 'when creating or modifying components or stories'); not 3 because both what and when are explicitly stated.

Trigger Term Quality

Natural user phrasing is present ("UI changes", "write and update stories", "story tests", "components", "review"), but there are no synonyms or file-extension forms (e.g. ".stories.js", "CSF", "component library"). Fits anchor 4 (good coverage, a few natural terms missing); not 5 because synonyms and extensions are absent.

Distinctiveness Conflict Risk

Deeply domain-specific phrasing ("Storybook's workflow", "stories", "story tests") gives it a clear niche with distinct triggers and minimal conflict risk with other skills. Not 4 because no plausible overlap with closely related skills exists — the Storybook terms are unambiguous.