# Design System (agent skill)

> Design System is an agent skill (a SKILL.md file) from affaan-m/ECC. Generate a design system from an existing codebase or audit one for visual consistency: extract tokens (colors, typography, spacing, shadows) into design-tokens.json… It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 274,402 GitHub stars across a repository of 10 listed skills.

Generate a design system from an existing codebase or audit one for visual consistency: extract tokens (colors, typography, spacing, shadows) into design-tokens.json and CSS custom properties with DESIGN.md rationale and an interactive HTML preview, score the UI across 10 dimensions, and flag AI-slop patterns. Use when starting a design system, auditing visual consistency before a redesign, or reviewing a PR that touches styling. Analyzes your codebase and generates a cohesive design system:

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/affaan-m/ECC |
| Skill path | skills/design-system/SKILL.md |
| Skill name | design-system |
| GitHub stars | 274,402 |
| Installs on skills.sh | 2 |
| License | MIT |
| Skills in repo | 10 |
| Plugin marketplace | ecc |
| Official | no |
| Works with | Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode |
| Category | Design & frontend |
| Last commit | Oct 2, 2026 |

## When it triggers

- Use when starting a design system, auditing visual consistency before a redesign, or reviewing a PR that touches styling.

## Add this skill

### Claude Code

```sh
/plugin marketplace add affaan-m/ECC
/plugin install ecc@ecc
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/affaan-m/ECC.git
cp -r ECC/skills/design-system .agents/skills/design-system   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/affaan-m/ECC.git
cp -r ECC/skills/design-system .cursor/skills/design-system   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

skills.sh listing: https://www.skills.sh/affaan-m/ECC/design-system

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