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Ui Ux Suite

Design audit for Claude Code. Scores UI/UX across 12 dimensions grounded in 24 named UX laws with primary-source citations. WCAG + APCA + OKLCH. Zero dependencies.

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Reviews

Documentation

Your project's design quality — measured, not guessed.

Install · What it scores · Commands · Demo videos

The 30-second pitch

Design reviews are vibes. This turns them into data.

ui-ux-suite scans your CSS, JSX, and Tailwind config and scores 12 design dimensions — color system, typography, layout, components, accessibility, hierarchy, interactions, responsiveness, and more. Every finding cites an authority (WCAG, APCA, Hick's Law, Miller's Law, Fitts's Law). Every fix comes with code.

npx ui-ux-suite

No dependencies. No config. No API keys. 100% local.

Why developers love it

ESLint for design. One command produces a quantified 1–10 score per dimension and a weighted overall grade you can track over time.
Cites real UX laws, not opinions. WCAG 2.2, APCA contrast, OKLCH color science, deltaE near-duplicate detection — not "this feels off."
Runs anywhere. Works with React, Vue, Svelte, Angular, vanilla. Detects Tailwind, shadcn, Radix, Framer Motion automatically.
Talks to your AI editor. Ships as an MCP server. Just ask "audit my design" in Claude / Cursor / Copilot.
Gives you the code. /uiux-fix generates the before/after patch for the top finding. uiux_generate_palette does an OKLCH-based recolor of your tokens.
Zero dependencies. The project is vanilla JS, by design. Ships under 200KB.

Install

From your AI editor (MCP)

# Claude Code
claude mcp add ui-ux-suite npx ui-ux-suite --mcp

# Codex CLI
codex mcp add ui-ux-suite -- npx -y ui-ux-suite --mcp

Cursor - ~/.cursor/mcp.json:

{ "mcpServers": { "ui-ux-suite": { "command": "npx", "args": ["ui-ux-suite", "--mcp"] } } }

VS Code + Copilot - .vscode/mcp.json:

{ "servers": { "ui-ux-suite": { "command": "npx", "args": ["-y", "ui-ux-suite", "--mcp"] } } }

Windsurf - ~/.codeium/windsurf/mcp_config.json:

{ "mcpServers": { "ui-ux-suite": { "command": "npx", "args": ["ui-ux-suite", "--mcp"] } } }

Gemini CLI - ~/.gemini/mcp_config.json:

{ "mcpServers": { "ui-ux-suite": { "command": "npx", "args": ["ui-ux-suite", "--mcp"] } } }

Continue.dev - .continue/mcpServers/ui-ux-suite.yaml:

mcpServers:
  ui-ux-suite: { command: npx, args: [ui-ux-suite, --mcp], type: stdio }

Then ask your AI: "Audit this project's design."

Claude Code plugin marketplace (recommended)

# In Claude Code
/plugin marketplace add Aboudjem/10x
/plugin install ui-ux-suite@10x

# Or from the terminal
claude plugin install ui-ux-suite@10x

Installs from the 10x marketplace. Adds 19 slash commands (5 top-level /ui-ux-suite:* + 14 specialist skills), 12 specialist agents, 19 knowledge docs, and the MCP server in one command.

Claude Code plugin (direct)

# In Claude Code
/plugin marketplace add Aboudjem/ui-ux-suite
/plugin install ui-ux-suite@ui-ux-suite

# Or from the terminal
claude plugin install ui-ux-suite@ui-ux-suite

This repo ships its own .claude-plugin/marketplace.json, so it registers as a single-plugin marketplace. Installs directly without the 10x indirection.

As a dev dependency

npm install -D ui-ux-suite

Add to package.json:

{ "scripts": { "design-audit": "ui-ux-suite" } }

Requires Node 18+.

What it scores

12 weighted dimensions. Accessibility gets the highest weight because it affects the most users.

Dimension	Weight	Checks
Accessibility	12%	Focus, skip links, alt text, reduced motion, ARIA
Color System	10%	WCAG + APCA contrast, duplicates, semantic roles, dark mode
Typography	10%	Scale consistency, font count, body size, line height
Layout & Spacing	10%	Grid, breakpoints, container widths
Component Quality	10%	States: hover, focus, disabled, loading, error
Visual Hierarchy	10%	Type scale, information priority, scannability
Interaction	8%	Animation timing, easing, feedback
Responsiveness	8%	Breakpoints, container queries
Visual Polish	7%	Shadow quality, gradient animation, radius tokens
Performance UX	5%	Loading states, perceived speed
Info Architecture	5%	Command palette, validation, navigation
Platform Fit	5%	Dark mode, component lib, a11y primitives

Findings are concrete, not vague:

"Button text contrast is 2.8:1, needs 4.5:1 for WCAG AA. Change #94a3b8 to #64748b on your white background."

Grounded in 24 UX laws

Every finding cites the law it violates. Reports end with a Laws of UX coverage table counting violations per law.

Examples: Hick's Law (choice cost), Fitts's Law (target size), Miller's Law (7±2), Jakob's Law (conventions), Doherty Threshold (400ms), Peak-End Rule, Gestalt (Proximity, Similarity, Common Region, Prägnanz, Uniform Connectedness), Aesthetic-Usability Effect, Choice Overload, Cognitive Load, Tesler's Law, Postel's Law, Occam's Razor, Pareto, Parkinson, Serial Position, Von Restorff, Zeigarnik, Goal-Gradient.

Full 24-law coverage table

Law	Definition	Cited by	Dimensions
Hick's Law	Decision time grows logarithmically with choices.	psychology, ux-flow, design	flows, hierarchy
Fitts's Law	Time to target depends on distance and size.	interaction, a11y, design	a11y, interaction
Miller's Law	Working memory holds 7 ± 2 items.	psychology, ux-flow, design	flows, hierarchy, typography
Jakob's Law	Users expect your site to work like others.	ux-flow, a11y, design	flows, platform, responsive
Doherty Threshold	Productivity surges below 400ms response.	interaction, design	interaction, performance
Peak-End Rule	Experience judged by peak + end moments.	psychology, interaction, ux-flow, design	interaction, performance, polish
Goal-Gradient Effect	Motivation rises near the finish line.	psychology, interaction, design	interaction
Aesthetic-Usability Effect	Pretty feels more usable.	psychology, design	color, polish, typography
Serial Position Effect	First and last items remembered best.	psychology, ux-flow, design	flows, hierarchy
Von Restorff Effect	Standouts get remembered.	psychology, design	hierarchy, color
Zeigarnik Effect	Incomplete tasks hold memory.	psychology, interaction, design	interaction, flows
Pareto Principle	80% of outcomes from 20% of causes.	ux-flow, design	flows
Parkinson's Law	Work expands to fill the time given.	ux-flow, design	flows
Postel's Law	Conservative output, liberal input.	a11y, design	a11y, components
Tesler's Law	Complexity is conserved, not removed.	ux-flow, design	components, flows
Occam's Razor	Prefer the simpler solution.	ux-flow, design	flows, platform
Law of Proximity	Close elements feel grouped.	layout, design	layout
Law of Common Region	Shared region implies grouping.	layout, design	layout
Law of Prägnanz	Eye prefers simplicity.	layout, design	layout, typography
Law of Similarity	Similar looks mean related.	layout, design	layout, color
Law of Uniform Connectedness	Visual connection implies group.	layout, design	layout
Chunking	Group items to expand recall.	psychology, ux-flow, design	flows, typography
Choice Overload	Too many options paralyzes.	psychology, ux-flow, design	flows
Cognitive Load	Working memory is a finite budget.	psychology, design	flows, hierarchy

Sources in References at the end.

Works with any stack

React

Next.js

Vue

Svelte

Angular

Vanilla

Styling: Tailwind · CSS Modules · SCSS · styled-components · Emotion · vanilla-extract · plain CSS. Libraries: shadcn/ui · MUI · Chakra · Radix · Mantine · Headless UI · Ark UI.

Auto-detects your framework. No config.

Commands

ui-ux-suite              Audit current directory
ui-ux-suite <path>       Audit a specific project
ui-ux-suite --json       JSON output for scripts
ui-ux-suite --mcp        Start as MCP server

One-command audit via slash command (v0.3, recommended):

/ui-ux-suite:audit                 Full 12-dimension audit, one report
/ui-ux-suite:colors                Color-only audit
/ui-ux-suite:a11y [--deep]         Accessibility-only audit (Playwright + axe-core in deep mode)
/ui-ux-suite:typography            Typography and hierarchy audit
/ui-ux-suite:components            Component-quality audit

These dispatch to the single uiux_audit_run MCP tool, which chains scan -> extract -> score -> report in one call. No manual tool chaining.

14 detailed slash commands (Claude Code plugin)

Command	What it does
`/design-audit`	Full 12-dimension audit with score card
`/color-audit`	Color system deep dive
`/type-audit`	Typography analysis
`/layout-audit`	Spacing and grid check
`/a11y-audit`	Accessibility review
`/component-audit`	State coverage check
`/flow-audit`	Navigation and IA review
`/design-score`	Quick overall score
`/design-tokens`	Generate token set from brand color
`/theme-builder`	Theme from brand color
`/style-direction`	Style recommendation
`/refactor-plan`	Prioritized action plan
`/design-compare`	Before/after comparison
`/design-checklist`	Pre-launch checklist

15 MCP tools

Tool	What it does
`uiux_audit_run`	One-call full audit. v0.3. Scan + extract + score all 12 dimensions + format report. Supports `depth: "quick"\|"deep"` and `dimensions` scoping.
`uiux_scan_project`	Detect framework, styling (Tailwind v3 vs v4), component lib, animation lib, icon lib, theme system. Returns structured diagnostics, no silent nulls.
`uiux_extract_colors`	Pull all colors from CSS, Tailwind, tokens
`uiux_extract_typography`	Extract fonts, sizes, weights, line heights
`uiux_extract_spacing`	Extract padding, margin, gap values
`uiux_check_contrast`	WCAG 2.1 + APCA contrast
`uiux_score_dimension`	Score any of 12 dimensions (v0.3: was 4)
`uiux_score_overall`	Weighted overall score
`uiux_generate_palette`	Generate palette from brand color
`uiux_generate_type_scale`	Generate type scale
`uiux_generate_spacing_scale`	Generate spacing scale
`uiux_generate_tokens`	Generate complete token set
`uiux_knowledge_query`	Query 19 knowledge documents
`uiux_laws_query`	Query 24 Laws of UX
`uiux_audit_log`	Append finding to audit log
`uiux_audit_report`	Generate formatted audit report

Deep mode (optional Playwright + axe-core)

Quick mode is static analysis only (zero dependencies). For live accessibility and touch-target scanning, install the optional peer dependencies:

npm i -D playwright-core @axe-core/playwright
npx playwright install chromium

Then:

/ui-ux-suite:a11y --deep

Deep mode injects axe-core into the running app at baseUrl, measures live contrast on rendered elements, flags touch targets smaller than 44x44px, and screenshots routes. Runs only when you ask for it — the default install stays zero-dep.

How it works

graph LR
    A["Your Project<br/><sub>CSS, JSX, Tailwind</sub>"] --> B["Extractors"]
    B --> C["Engines<br/><sub>Color · Type · Spacing · OKLCH</sub>"]
    C --> D["Scoring<br/><sub>12 weighted dimensions</sub>"]
    D --> E["Report<br/><sub>Score + fixes + citations</sub>"]

    style A fill:#f8fafc,stroke:#0ea5e9,color:#0c4a6e
    style B fill:#f0f9ff,stroke:#0ea5e9,color:#0c4a6e
    style C fill:#e0f2fe,stroke:#0ea5e9,color:#0c4a6e
    style D fill:#bae6fd,stroke:#0ea5e9,color:#0c4a6e
    style E fill:#0ea5e9,stroke:#0284c7,color:#ffffff

Architecture

lib/
  mcp-server.js       MCP JSON-RPC server (15 tools)
  runner.js           Full 12-dimension audit orchestrator
  browser.js          Optional Playwright + axe-core deep mode
  color-engine.js     WCAG, APCA, deltaE, palette
  type-engine.js      Scale math, readability
  spacing-engine.js   Grid detection, consistency
  oklch-parser.js     OKLCH color space
  theme-parser.js     Tailwind v4 @theme / @theme inline parser
  tailwind-parser.js  Class extraction + breakpoint bucketing
  extractors.js       CSS, Tailwind, SCSS, stack detection
  scoring.js          12 weighted dimension scorers
  schema.js           Data structures
  knowledge.js        Built-in knowledge base

commands/    5 top-level slash commands (/ui-ux-suite:audit, ...)
knowledge/   19 markdown docs (3,081 lines)
agents/      12 specialist agents
skills/      14 specialist slash commands
templates/   5 report templates

Knowledge base (19 docs, 3,081 lines)

Document	Lines	Covers
accessibility-guide.md	213	WCAG, ARIA, focus management
color-theory.md	142	Harmony, semantics, dark mode
typography-theory.md	131	Scale ratios, 2026 font picks
component-patterns.md	139	State checklist, button hierarchy
ux-flows.md	155	Navigation, onboarding, IA
design-engineer-craft-2026.md	355	Tips from Vercel, Linear, shadcn
insider-secrets-2026.md	233	35 tips from veterans
wow-animations-2026.md	214	Scroll driven, view transitions
wow-libraries-2026.md	178	15 component libraries
design-tools-2026.md	253	Design tooling landscape
evidence-base.md	78	30+ quantified findings
dark-patterns.md	154	Deceptive design detection
advanced-polish.md	164	Shadow techniques, micro-interactions
platform-conventions.md	129	iOS, Android, web patterns
anti-patterns.md	90	Common mistakes
libraries-tools.md	133	Component library comparison
principles.md	90	Core design principles
psychology.md	119	Cognitive load, Gestalt
trends-2026.md	111	CSS features, AI patterns
laws-of-ux.md	320	24 named UX laws

Evidence

Every recommendation traces to research.

Finding	Number	Source
Time users take to judge your design	50ms	Academic research
Users who leave after a bad impression	88%	UX survey
ADA lawsuits filed in H1 2025	5,114	WebAIM, UsableNet
A11y issues automated tools catch	30-40%	Deque, W3C
Smartphone users with dark mode on	81.9%	Mobile analytics

Full evidence base with HIGH/MEDIUM/LOW confidence ratings lives in knowledge/evidence-base.md.

2026 CSS features detected

Feature	Detection
View Transitions API	`@view-transition`, `::view-transition`
Scroll-driven animations	`animation-timeline: view\|scroll`
Container queries	`@container`
`@property` animations	`@property --*`
`@starting-style`	`@starting-style { }`
OKLCH colors	`oklch()` notation

Privacy

All analysis runs locally. Your code never leaves your machine. No telemetry. No API calls. No network.

Contributing

Contributions are welcome. This project is maintained in public and every PR is reviewed.

Setup

git clone https://github.com/Aboudjem/ui-ux-suite
cd ui-ux-suite
npm test   # 234 tests, zero dependencies

What makes a good PR

Bug fixes always welcome. Include a test that would have caught the bug.
New scoring rules should cite a named UX law or a primary-source study in the finding. See knowledge/laws-of-ux.md for the 24-law vocabulary.
New MCP tools must follow the registration pattern in lib/mcp-server.js. Add a test in test/ that exercises the handler without starting the server.
Knowledge docs should be evidence-backed. Add new citations to knowledge/evidence-base.md with HIGH/MEDIUM/LOW confidence ratings.
No new runtime dependencies. The suite is zero-dep by design; dev dependencies are fine.
No em-dashes in user-facing copy (reports, README, knowledge files).

Good first issues

Look for the good first issue label. Typical starting points: add a new knowledge doc, extend a scorer with a new finding, add a new generator preset.

Process

Fork and branch from main.
Add or update tests under test/.
Run npm test locally (CI also runs on Node 18 + 22).
Open a PR describing the problem, the approach, and any trade-offs.
Reviewer feedback usually within 48 hours.

See CONTRIBUTING.md, CODE_OF_CONDUCT.md, and SECURITY.md for the full policies.

_{MIT · Built by Adam Boudjemaa · Star ⭐ to help others find it}

References

_{Academic and canonical sources for the 24 Laws of UX. Each finding in the audit report cites one or more of these primary sources. No content is copied from external UX reference sites; prose in knowledge/laws-of-ux.md is authored fresh from these papers.}

_{Decision-making and choice

Hick, W. E. (1952). On the rate of gain of information. Quarterly Journal of Experimental Psychology, 4(1), 11-26.
Iyengar, S. S., & Lepper, M. R. (2000). When choice is demotivating: Can one desire too much of a good thing? Journal of Personality and Social Psychology, 79(6), 995-1006.
Hull, C. L. (1932). The goal-gradient hypothesis and maze learning. Psychological Review, 39(1), 25-43.
Pareto, V. (1896). Cours d'economie politique. Lausanne.
Parkinson, C. N. (1955). Parkinson's Law. The Economist, November 19.
William of Ockham, c. 1323. Summa Logicae.

Memory and attention

Miller, G. A. (1956). The magical number seven, plus or minus two: Some limits on our capacity for processing information. Psychological Review, 63(2), 81-97.
Sweller, J. (1988). Cognitive load during problem solving: Effects on learning. Cognitive Science, 12(2), 257-285.
Ebbinghaus, H. (1913). Memory: A Contribution to Experimental Psychology.
von Restorff, H. (1933). Uber die Wirkung von Bereichsbildungen im Spurenfeld. Psychologische Forschung, 18, 299-342.
Zeigarnik, B. (1927). Uber das Behalten von erledigten und unerledigten Handlungen. Psychologische Forschung, 9, 1-85.
Kahneman, D., Fredrickson, B. L., Schreiber, C. A., & Redelmeier, D. A. (1993). When more pain is preferred to less: Adding a better end. Psychological Science, 4(6), 401-405.

Motor and interaction

Fitts, P. M. (1954). The information capacity of the human motor system in controlling the amplitude of movement. Journal of Experimental Psychology, 47(6), 381-391.
Doherty, W. J., & Thadhani, A. J. (1982). The Economic Value of Rapid Response Time. IBM Report GE20-0752-0.

Perception (Gestalt)

Wertheimer, M. (1923). Untersuchungen zur Lehre von der Gestalt II. Psychologische Forschung, 4, 301-350.
Koffka, K. (1935). Principles of Gestalt Psychology. Harcourt, Brace and World.
Palmer, S. E. (1992). Common region: A new principle of perceptual grouping. Cognitive Psychology, 24(3), 436-447.
Palmer, S. E., & Rock, I. (1994). Rethinking perceptual organization: The role of uniform connectedness. Psychonomic Bulletin & Review, 1(1), 29-55.
Kurosu, M., & Kashimura, K. (1995). Apparent usability vs. inherent usability: Experimental analysis on the determinants of the apparent usability. CHI '95 Conference Companion, 292-293.

Convention and complexity

Nielsen, J. (2000). End of Web Design. Nielsen Norman Group Alertbox.
Postel, J. (1980). RFC 761: Transmission Control Protocol. IETF.
Saffer, D. (2010). Designing for Interaction (2nd ed.). New Riders.}