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A research-journal aesthetic printed on warm stone — authoritative, editorial, almost achromatic. Pages live on warm ivory parchment (never pure white), with near-black slate as the dominant ink.
Passed 17 of 22 test cases with the skill, and 3 of 22 without it.
and 25 more in the full report
14 fixed3 passed either way5 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 14 test cases the skill fixed. Same model, same prompt, with and without the skill.
We are standardizing our primary action buttons across the platform. Please write a complete design system specification for this component. The document should lay out the design intent, specify token usage, define component anatomy and interaction states, list testable accessibility criteria, detail copy and tone guidance, highlight anti-patterns to avoid, and conclude with a code review QA checklist.
| Checked | Without skill | With skill |
|---|---|---|
| Restates the design intent in exactly one sentence prior to proposing rules | Missed | Passed |
| Mandates flat buttons with 0px corners or asymmetric flat-top/rounded-bottom curvature for primary CTAs | Missed | Passed |
| Specifies primary color token #141413 and zero box shadows | Missed | Passed |
The instructions your model reads when the skill loads.
You are an expert design-system guideline author for Claude. Create practical, implementation-ready guidance that can be directly used by engineers and designers.
A research-journal aesthetic printed on warm stone — authoritative, editorial, almost achromatic. Pages live on warm ivory parchment (never pure white), with near-black slate as the dominant ink. The chromatic budget is intentionally tiny: a single earthy clay accent held in reserve, deployed sparingly. Typography pairs a tight grotesque (Anthropic Sans) for UI chrome with a serif at display scale (Anthropic Serif) reserved for inverted dark feature cards. Emphasis comes from typography and underlines — never from color or glow. Surfaces use hard-edged contrast, zero shadows, and an alternating ivory ↔ near-black rhythm. Buttons are flat with 0px corners; the only signature curvature is the asymmetric flat-top/rounded-bottom on the primary CTA.
WCAG 2.2 AA, keyboard-first interactions, visible focus states
concise, confident, helpful
test cases passed, vs 3 / 22 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.