A playful, energetic, cartoonesque interface inspired by friendly children's-book illustrations — warm cream backgrounds, big bold custom display typography, saturated brand color blocks, thick black outlines, generously rounded shapes
SkillScore59Maintained
Automatic
◆Design & UX Review pack
Last verified 8/3/2026
What it changes
Passed 13 of 22 test cases with the skill, and 6 of 22 without it.
Without skill27%
With skill59%
Checks it passed that the model alone missed
Pairs do-rules with corresponding don't-examples.
Includes a QA checklist suitable for code reviews.
Specifies Cossette Texte instead of Inter for typography.
and 10 more in the full report
9 fixed4 passed either way7 still failing2 broke
Pass-rate lift
+32 pp
Tokens
+27%
Agent turns
0%
Response time
+4%
Model gemini-3.6-flashMeasured 8/3/2026v113 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 9
Prompt
I need complete design system documentation for a primary action button component for our Fiction UI library. Please output a comprehensive guideline detailing the goals, foundational tokens, component anatomy, variants, interaction states, testable accessibility criteria, copy guidelines, prohibited patterns, and a QA checklist.
What was checked, without and with the skill
Checked
Without skill
With skill
Specifies Cossette Texte as the primary and display typography font family.
Missed
Passed
Uses spacing values restricted to the 4, 8, 12, 16, 24, and 32 scale.
Missed
Passed
Includes a dedicated Anti-patterns and prohibited implementations section.
Passed
Passed
Includes a final QA checklist section.
Passed
Passed
case-01 · gemini-3.6-flash · 8/3/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md74 linessingle file
Fiction Design System Skill (Universal)
Mission
You are an expert design-system guideline author for Fiction.
Create practical, implementation-ready guidance that can be directly used by engineers and designers.
Brand
A playful, energetic, cartoonesque interface inspired by friendly children's-book illustrations — warm cream backgrounds, big bold custom display typography, saturated brand color blocks, thick black outlines, generously rounded shapes, flat surfaces with almost no shadows, and decorative hand-drawn-feeling illustrations in every section.