Design System
Ohh-889/skyroc
Token architecture, component specifications, and slide generation.
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…
Install Design System
$ npx skills add affaan-m/ECC --skill design-system -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install affaan-m/ECC design-system --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/design-system .claude/skills/design-system && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "design-system" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/design-system into .claude/skills/design-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-system", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/affaan-m/ECC/tree/main/skills/design-systemType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add affaan-m/ECC --skill design-system -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install affaan-m/ECC design-system --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/design-system .agents/skills/design-system && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "design-system" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/design-system into .agents/skills/design-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-system", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add affaan-m/ECC --skill design-system -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install affaan-m/ECC design-system --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/design-system .cursor/skills/design-system && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "design-system" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/design-system into .cursor/skills/design-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-system", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/affaan-m/ECC.git --path skills/design-system--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add affaan-m/ECC --skill design-system -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install affaan-m/ECC design-system --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/design-system .gemini/skills/design-system && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "design-system" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/design-system into .gemini/skills/design-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-system", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install affaan-m/ECC design-systemInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add affaan-m/ECC --skill design-system -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/design-system .github/skills/design-system && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "design-system" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/design-system into .github/skills/design-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-system", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add affaan-m/ECC --skill design-system -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install affaan-m/ECC design-system --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/affaan-m/ECC.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/design-system .opencode/skills/design-system && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "design-system" agent skill from https://github.com/affaan-m/ECC/tree/main/skills/design-system into .opencode/skills/design-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "design-system", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
design-system- GitHub stars
- 276k
- Token cost
- ~698 tokens
- SKILL.md length
- 116 words
- Files
- 1
- Skills in repo
- 683
- Repo updated
- First seen
- Licence
- MIT
At a glance
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…
- Starting a design system
- SKILL.md covers When to Use, How It Works and Examples
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Auditing visual consistency before a redesign
What it does
Design System is an agent skill 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 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.
Its SKILL.md is about 700 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering Design systems, Design tokens and HTML artifacts. The repository describes itself as: The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond. The licence is MIT.
When your agent uses it
- Starting a design system
- Auditing visual consistency before a redesign
- Reviewing a PR that touches styling
Example prompts
- “/design-system”
What it can do on your machine
Read from SKILL.md and the folder at commit 4eb71d9. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Design System loads about 698 tokens when it runs. Until then it costs about 112 tokens; SKILL.md has 116 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from affaan-m/ECC at commit 4eb71d9, republished under its MIT licence (© affaan-m). 116 words, ~698 tokens.
Download SKILL.mdSave it as
.claude/skills/design-system/SKILL.md (or your agent's skills folder).- name
- design-system
- description
- 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.
- metadata.origin
- ECC
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 statesEach 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 personalityExamples
Generate for a SaaS app:
/design-system generate --style minimal --palette earth-tonesAudit existing UI:
/design-system audit --url http://localhost:3000 --pages / /pricing /docsCheck for AI slop:
/design-system slop-check© affaan-m, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/design-system of affaan-m/ECC.
Open the folder on GitHubat commit 4eb71d9
Compare with similar skills
Design System next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Design System this skillaffaan-m/ECC | 276k | — | ~698 | Automated safety check: Pass | MIT | |
| Design SystemOhh-889/skyroc | 795 | 11 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Scalar Design Systemscalar/scalar | 16k | — | ~2.7k | Automated safety check: Pass | MIT | |
| Stitch Taste Design Systemgoogle-labs-code/stitch-skills | 8.5k | 15 repos | ~3.1k | Automated safety check: Pass | Apache-2.0 | |
| Web Designdrewnekota/cetus | 146 | — | ~2.1k | Automated safety check: Pass | MIT | |
| Replica DesignJakeschincariol/replica-skill | 1.4k | — | ~994 | Automated safety check: Pass | MIT |
Similar skills
Scalar Design System
scalar/scalar
Scalar's design system — design tokens, theming (@scalar/themes), CSS variables, and the @scalar/components library.
- Official
Stitch Taste Design System
google-labs-code/stitch-skills
Generates a DESIGN.md design-language file for Google Stitch that encodes color, typography, layout, component behavior and motion rules to avoid generic AI-looking UI.
Web Design
drewnekota/cetus
A skill your agent uses when building any web page, HTML artifact, landing page, dashboard, slide deck, report, email, or UI component the user will look at.
Replica Design
Jakeschincariol/replica-skill
Rebuilds an app's design system for a clone: colour roles, type scale, spacing, radius, shadows and every component with its states, as design tokens plus component specs, with original assets…
Tailwind V4 Shadcn
ever-works/ever-works
Production-tested setup for Tailwind CSS v4 with shadcn/ui, Vite, and React.
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Related
Categories
Questions about Design System
What does Design System do?
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 System is an agent skill from affaan-m/ECC.md rationale and an interactive HTML preview, score the UI across 10 dimensions, and flag AI-slop patterns.
When should I use Design System?
Design System fits situations like: starting a design system; auditing visual consistency before a redesign; reviewing a PR that touches styling.
How do I install Design System in Claude Code?
Run `npx skills add affaan-m/ECC --skill design-system -a claude-code`. Or copy the skill folder (skills/design-system in affaan-m/ECC) into .claude/skills/design-system in your project. Claude Code loads it when a task matches its description.
How do I install Design System in Codex?
Run `npx skills add affaan-m/ECC --skill design-system -a codex`. Or copy the skill folder (skills/design-system in affaan-m/ECC) into .agents/skills/design-system in your project. Codex loads it when a task matches its description.
Can I use Design System in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add affaan-m/ECC --skill design-system -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/design-system, .gemini/skills/design-system, .github/skills/design-system and .opencode/skills/design-system in your project.
What does Design System need to run?
SKILL.md names no scripts, command-line tools or credentials: Design System is instructions for the agent only.
Does Design System access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Design System safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Design System use?
Design System is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Design System use?
About 698 tokens (SKILL.md is roughly 2.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Design System?
Skills that share tags, products or a category with Design System: Design System (Ohh-889/skyroc, 795 stars), Scalar Design System (scalar/scalar, 16k stars), Stitch Taste Design System (google-labs-code/stitch-skills, 8.5k stars) and Web Design (drewnekota/cetus, 146 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Design System?
affaan-m (a GitHub user) maintains it in affaan-m/ECC, which has 276,111 GitHub stars. The repository holds 683 skills in this directory. The repository was last updated on October 10, 2026.
Source: affaan-m/ECC on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.