How do I install the Design System skill?

Run npx skillmds@latest add jantoniofc/design-system in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Design System safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Design System?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Design System free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under MIT.

Who published Design System?

JantonioFC (@jantoniofc) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Design System by jantoniofc — Agent Skill

Name: Design System
Rating: 4.2 (5 reviews)
Author: JantonioFC

Design System

- Starting a new project that needs a design system - Auditing an existing codebase for visual consistency - Before a redesign — understand what you have - When the UI looks "off" but you can't pinpoint why - Reviewing PRs that touch styling

JantonioFC Updated Sep 8, 2026 6 repo stars

File contents

Design System — Generate & Audit Visual Systems

When to Use

Starting a new project that needs a design system
Auditing an existing codebase for visual consistency
Before a redesign — understand what you have
When the UI looks "off" but you can't pinpoint why
Reviewing PRs that touch styling

How It Works

Mode 1: Generate Design System

Analyzes your codebase and generates a cohesive design system:

1. Scan CSS/Tailwind/styled-components for existing patterns
2. Extract: colors, typography, spacing, border-radius, shadows, breakpoints
3. Research 3 competitor sites for inspiration (via browser MCP)
4. Propose a design token set (JSON + CSS custom properties)
5. Generate DESIGN.md with rationale for each decision
6. Create an interactive HTML preview page (self-contained, no deps)

Output: DESIGN.md + design-tokens.json + design-preview.html

Mode 2: Visual Audit

Scores your UI across 10 dimensions (0-10 each):

1. Color consistency — are you using your palette or random hex values?
2. Typography hierarchy — clear h1 > h2 > h3 > body > caption?
3. Spacing rhythm — consistent scale (4px/8px/16px) or arbitrary?
4. Component consistency — do similar elements look similar?
5. Responsive behavior — fluid or broken at breakpoints?
6. Dark mode — complete or half-done?
7. Animation — purposeful or gratuitous?
8. Accessibility — contrast ratios, focus states, touch targets
9. Information density — cluttered or clean?
10. Polish — hover states, transitions, loading states, empty states

Each dimension gets a score, specific examples, and a fix with exact file:line.

Mode 3: AI Slop Detection

Identifies generic AI-generated design patterns:

- Gratuitous gradients on everything
- Purple-to-blue defaults
- "Glass morphism" cards with no purpose
- Rounded corners on things that shouldn't be rounded
- Excessive animations on scroll
- Generic hero with centered text over stock gradient
- Sans-serif font stack with no personality

Examples

Generate for a SaaS app:

/design-system generate --style minimal --palette earth-tones

Audit existing UI:

/design-system audit --url http://localhost:3000 --pages / /pricing /docs

Check for AI slop:

/design-system slop-check

---name: design-systemdescription: - Starting a new project that needs a design system - Auditing an existing codebase for visual consistency - Before a redesign — understand what you have - When the UI looks "off" but you can't pinpoint why - Reviewing PRs that touch stylinglicense: MIT---# Design System — Generate & Audit Visual Systems## When to Use- Starting a new project that needs a design system- Auditing an existing codebase for visual consistency- Before a redesign — understand what you have- When the UI looks "off" but you can't pinpoint why- Reviewing PRs that touch styling## How It Works### Mode 1: Generate Design SystemAnalyzes your codebase and generates a cohesive design system:```1. Scan CSS/Tailwind/styled-components for existing patterns2. Extract: colors, typography, spacing, border-radius, shadows, breakpoints3. Research 3 competitor sites for inspiration (via browser MCP)4. Propose a design token set (JSON + CSS custom properties)5. Generate DESIGN.md with rationale for each decision6. Create an interactive HTML preview page (self-contained, no deps)```Output: `DESIGN.md` + `design-tokens.json` + `design-preview.html`### Mode 2: Visual AuditScores your UI across 10 dimensions (0-10 each):```1. Color consistency — are you using your palette or random hex values?2. Typography hierarchy — clear h1 > h2 > h3 > body > caption?3. Spacing rhythm — consistent scale (4px/8px/16px) or arbitrary?4. Component consistency — do similar elements look similar?5. Responsive behavior — fluid or broken at breakpoints?6. Dark mode — complete or half-done?7. Animation — purposeful or gratuitous?8. Accessibility — contrast ratios, focus states, touch targets9. Information density — cluttered or clean?10. Polish — hover states, transitions, loading states, empty states```Each dimension gets a score, specific examples, and a fix with exact file:line.### Mode 3: AI Slop DetectionIdentifies generic AI-generated design patterns:```- Gratuitous gradients on everything- Purple-to-blue defaults- "Glass morphism" cards with no purpose- Rounded corners on things that shouldn't be rounded- Excessive animations on scroll- Generic hero with centered text over stock gradient- Sans-serif font stack with no personality```## Examples**Generate for a SaaS app:**```/design-system generate --style minimal --palette earth-tones```**Audit existing UI:**```/design-system audit --url http://localhost:3000 --pages / /pricing /docs```**Check for AI slop:**```/design-system slop-check```

Frequently asked questions