Ui Ux Suite

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ESLint for design. It finds the exact line, the measured wrong value, and the exact fix.

What is it · How to use · Before / after · Compare · FAQ

What is ui-ux-suite?

ui-ux-suite is a zero-dependency design linter that audits your CSS, JSX, HTML, and Tailwind config and returns specific, located, measured findings with a concrete fix, not generic advice.

Most "design review" tools tell you "improve your contrast." This tool tells you:

.hero-subtitle at src/styles.css:14: text #fbfbfb on #ffffff = 1.03:1, fails WCAG 2.2 AA (needs 4.5:1). Fix: change color to #767676 (4.54:1 on white) or darker.

That is the whole point. Every finding is located (file:line + selector), measured (the real wrong number), and fixed (the exact change). It scores 12 design dimensions grounded in WCAG 2.2, APCA contrast, and the Laws of UX, citing the WCAG success criterion or the named law it depends on.

• It audits, it never edits. Every run is read-only and outputs suggestions (before → after). Applying a fix is your call.
• It runs anywhere. One MCP server + one npx CLI → works in Claude Code, Cursor, VS Code, Codex, Gemini, Windsurf, and Continue.
• It needs nothing. Pure Node built-ins. No install weight, no API keys, no network, no telemetry. Your code stays on your machine.

See a real run: sample audit report · sample terminal output

How to use it (3 steps)

1. Run it on any project

npx ui-ux-suite .

You get a ranked list of located + measured + fixed findings and a weighted 0–10 score across 12 dimensions. No config, no setup.

2. Pick the output you need

npx ui-ux-suite .                      # human-readable report (default)
npx ui-ux-suite . --json | jq          # machine-readable JSON (banner goes to stderr)
npx ui-ux-suite . --html report.html   # standalone dark-theme HTML report
npx ui-ux-suite . --fail-under 7        # exit 1 if the score drops below 7 (CI gate)

Exit codes: 0 ok · 1 audit error or below --fail-under · 2 path not found · 3 insufficient evidence.

3. Wire it into your AI editor (optional)

npx ui-ux-suite --mcp     # start the MCP server over stdio

Then ask your editor: "Audit this project's design." The MCP tool uiux_audit_run runs the same engine and returns the same located findings.

# 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

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

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

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

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

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

Or install the skills into any AI CLI

The MCP server above works in every MCP-capable client. To also load the /design-* skills directly into another CLI, run the one-line installer. It symlinks the skills into that CLI's skills directory; --update pulls the latest and relinks, --uninstall removes them.

curl -fsSL https://raw.githubusercontent.com/Aboudjem/ui-ux-suite/main/install.sh | bash -s codex

On Windows, run install.ps1 <platform> from a checkout (Developer Mode or an elevated shell is needed for symlinks).

Skill-directory conventions change between CLI releases. If a link does not resolve, fall back to the MCP server (it works everywhere). Run install.sh all to link every platform at once.

# From the 10x marketplace
claude plugin marketplace add Aboudjem/10x
claude plugin install ui-ux-suite@10x

npm install -D ui-ux-suite

{ "scripts": { "design-audit": "ui-ux-suite . --fail-under 7" } }

Real before / after

The repo ships a fixture with 12 deliberately planted UX problems and their ground truth (test/fixtures/planted-ux-problems/PLANTED.md). It is the regression gate for every release.

The thing that changed in this rebuild is specificity: whether a finding is detected and located and measured and fixed:

The old engine concatenated every CSS file into one blob and emitted bare {severity, msg} strings; file identity died before scoring, so it could never point at a line. The new engine carries {value, file, line, col, selector} from the extractor all the way to the finding.

A real finding from that fixture (verbatim from npx ui-ux-suite test/fixtures/planted-ux-problems):

Low text contrast on `.hero-subtitle`: 1.03:1
  src/styles.css:14   ·   WCAG 1.4.3 Contrast (Minimum) (AA)
  measured: 1.03:1 (APCA Lc 0)
  fix: change color on `.hero-subtitle` from #fbfbfb to #767676
       (meets 4.5:1 on #ffffff), or darken further.

That fixture currently scores 3.8 / 10 ("Needs Work"), because it is supposed to be broken. Run it yourself:

npx ui-ux-suite test/fixtures/planted-ux-problems

How it compares

The differentiator is located + measured + fixed, with a WCAG SC or UX-law citation, from your source or a URL, in one zero-dep command across every editor.

ui-ux-suite does not replace Lighthouse or axe. It covers the gap they leave: design quality grounded in your source, with a fix you can paste.

What it scores

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

How it works

graph LR
    A["Your project<br/><sub>CSS · JSX · HTML · Tailwind</sub>"] --> B["Located extractors<br/><sub>keep file · line · selector</sub>"]
    B --> C["Engines<br/><sub>WCAG · APCA · OKLCH · ΔE</sub>"]
    C --> D["12 weighted scorers"]
    D --> E["Findings<br/><sub>located · measured · fixed · cited</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

Static analysis is the default and the primary deliverable; it needs no browser. Deep mode is opt-in: install the optional peer deps (playwright-core, @axe-core/playwright) and pass a baseUrl to also measure live contrast, flag touch targets under 44×44px, and screenshot routes. When the deps are absent, it degrades gracefully to source-based findings.

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

FAQ

Is it safe to run on my project? Yes. Every audit is strictly read-only. The tool never creates, edits, or deletes files in the project you audit; it only reads and reports. Deep-mode screenshots happen in a throwaway browser page, never against your source.

Does my code leave my machine? No. All analysis runs locally with Node built-ins. No network calls, no API keys, no telemetry.

Which frameworks does it support? React, Next.js, Vue, Svelte, Angular, and vanilla. Styling: Tailwind (v3 and v4 @theme), CSS Modules, SCSS, styled-components, Emotion, vanilla-extract, plain CSS. It auto-detects the stack; no config.

Is it really zero-dependency? Yes. The runtime uses only Node built-ins. playwright-core and @axe-core/playwright are optional peer deps for deep mode only; the default install pulls nothing.

Do I need a running app? No. Source-based findings are the default. A running URL plus deep mode is a bonus, not a requirement.

Does it fix my code automatically? No. It audits and suggests (before → after). Applying a fix is a separate, deliberate step you take.

Can I use it in CI? Yes. npx ui-ux-suite . --fail-under 7 exits non-zero when the score drops below your threshold. --json gives machine-readable output for any pipeline.

Why trust it

• Real color science. Contrast is computed with the tool's own WCAG 2.2 and APCA math, not estimated. The fixture's measured ratios (e.g. 1.03:1) are reproducible from lib/color-engine.js.
• Cited WCAG success criteria. Accessibility findings cite the exact SC: 1.4.3 Contrast (Minimum), 1.4.11 Non-text Contrast, 2.5.8 Target Size, 2.4.7 Focus Visible, 1.1.1 Non-text Content, 3.3.2 Labels or Instructions.
• Verified Laws of UX. UX findings cite a named law from a primary-source allow-list, each linking to its canonical lawsofux.com page (e.g. Hick's Law, Fitts's Law, Law of Prägnanz). A wrong citation is treated as worse than none, so the citation set is pinned by a test.
• A regression gate, not a vibe. 311 tests (run npm test) assert real behavior, including a 12-problem fixture where every finding must carry evidence.file, evidence.line, and a fix. If specificity regresses, the test suite fails.

Privacy

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

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Contributing

Contributions welcome. The project is maintained in public.

git clone https://github.com/Aboudjem/ui-ux-suite
cd ui-ux-suite
npm test

• Bug fixes should include a test that would have caught the bug.
• New scoring rules must cite a WCAG SC or a named UX law from the allow-list and emit a createFinding(...) with evidence: {file, line, selector, measured, threshold} plus a fix.
• No new runtime dependencies. The suite is zero-dep by design.
• No em-dashes in user-facing copy.

See CONTRIBUTING.md, AGENTS.md, CODE_OF_CONDUCT.md, and SECURITY.md.

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