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codeonym-osscodeonym-oss/design-skills/skills/ui-design/SKILL.md

ui-design

Skill0 starsChanged 48 days agoMITView on GitHub

UI/UX and web/app interface design — wireframes and mockups in Penpot, Figma or Lunacy, design tokens (color scales, type, spacing) for Tailwind/CSS, and generated assets (favicons, app/PWA icons, web manifest) built headlessly in a reproducible container. Use when the user wants wireframes, app or website mockups, a design system (colors, type scale, spacing tokens), favicons/app icons/PWA icons, or wants to hand designs off to a Next.js/Tailwind codebase.

59 other projects use a version of this, 1 of them edited.

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Projects with it also use harness-design, typescript and 8 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
  • VictoriakaeySkill

    harness-design

    Use when designing or improving the action space, observation format, tool boundaries, and evaluation signals of an LLM agent. Covers the five layers of harness design: what tools the agent has, what it sees after acting, how each tool is scoped, how behavior is evaluated, and how to iterate when the agent misbehaves. Prevents the most common harness failures — agents that pick wrong tools, ignore critical information, or loop without progress.

    Also in 3 projects that use this

  • MicrosoftSkill

    typescript

    TypeScript best practices for this monorepo. Use this skill when: (1) writing new TypeScript code, (2) reviewing TypeScript code, (3) working with API responses, fetch calls, or JSON parsing, (4) adding or modifying types and interfaces.

    Also in 7 projects that use this

  • OpenAISkill

    auth

    Authentication integration guidance — Clerk (native Vercel Marketplace), Descope, and Auth0 setup for Next.js applications. Covers middleware auth patterns, sign-in/sign-up flows, and Marketplace provisioning. Use when implementing user authentication.

    Also in 3 projects that use this

  • VercelSkill

    react

    React renderer for json-render that turns JSON specs into React components. Use when working with @json-render/react, building React UIs from JSON, creating component catalogs, or rendering AI-generated specs.

    Also in 4 projects that use this

  • 3stoneBrotherSkill

    code-audit

    Professional code security audit skill covering 55+ vulnerability types. Enhanced with WooYun 88,636 real-world vulnerability cases (2010-2016). This skill should be used when performing security audits, vulnerability scanning, penetration testing preparation, or code review for security issues. Supports 9 languages: Java, Python, Go, PHP, JavaScript/Node.js, C/C++, .NET/C#, Ruby, Rust. Includes 143 mandatory detection items across all languages with language-specific checklists. Covers SQL injection, XSS, RCE, deserialization, SSRF, JNDI injection, JDBC protocol injection, authentication bypass, business logic flaws, race conditions, and modern security domains (LLM, Serverless, Android). WooYun integration adds: statistical-driven parameter priority, bypass techniques library, logic vulnerability patterns, and real-case references. v1.0: Initial public release with Docker deployment verification framework.

    Also in 3 projects that use this

  • jarosser06Skill

    test-strategy

    Plans pytest test strategies for Drift's 90%+ coverage requirement using coverage analysis, edge case identification, and test suite design. Use when determining what tests to write, analyzing coverage gaps, or planning test strategies.

    Also in 3 projects that use this

The file

We split this skill into the rules it gives an agent

2 rules. 0 are common, 2 are distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 50 edited versions we read keep these.

  • 2

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Start grayscale and low-fi.

    line 39
  2. Distinctive:

    Every text/background pair ≥ 4.5:1 contrast (3:1 for large text).

    line 42

“Common” is measured: kept by at least 6 in 10 of the 50 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

UI design (Penpot · Figma · Lunacy · Inkscape)

Design apps run on the desktop or in the browser; the asset scripts run inside the design-skills container automatically (bash <skill-dir>/scripts/<name>.sh …, see design-sandbox).

Toolkit

ToolUse it forWhere
PenpotOpen-source, SVG-native design; CSS/SVG inspect for handoff; self-hostablehttps://design.penpot.app
FigmaWhen a client/team already uses Figmahttps://figma.com
LunacyFree offline desktop editor (Windows/macOS/Linux), opens .fig and .sketchhttps://icons8.com/lunacy
Inkscape 1.4Custom icons and illustrations as SVGcontainer: inkscape
Color pickerPick colors anywhere on screen (HEX/RGB/OKLCH)Eyedropper (Linux) · Digital Color Meter (macOS) · PowerToys Color Picker (Windows)
FontsInter, IBM Plex, Roboto, Source Sans 3, JetBrains Mono…typography skill

An agent can also design directly in code: write the screen as HTML/Tailwind or SVG, render it, look at it, iterate.

Scripts

ScriptWhat it does
check.shVerifies Inkscape, ImageMagick, oxipng, python3 and the UI fonts
icon-set.sh <icon.svg> [outdir] [--bg '#0d1117'] [--name 'App']favicon.ico (16/32/48) + favicon.svg, apple-touch-icon, PWA 192/512 + maskable, 1024 master, site.webmanifest, <head> snippet
palette.sh '#RRGGBB' [name] [outdir]50–950 perceptual (OKLCH) scale → CSS variables, Tailwind v4 @theme block, swatch PNG

Guides

  • references/ui-workflow.md — brief → wireframe → design system → hi-fi → prototype → handoff.
  • references/design-tokens.md — spacing/type/radius scales and how to carry them into Next.js + Tailwind.

Rules of thumb

  1. Start grayscale and low-fi; add brand color only after layout and hierarchy work.
  2. 8-pt spacing grid (4 for dense UI); 12 columns on desktop, 4 on mobile.
  3. Build components (buttons, inputs, cards) with variants before assembling screens.
  4. Every text/background pair ≥ 4.5:1 contrast (3:1 for large text).
  5. Design mobile (390 px) and desktop (1440 px) frames for every key screen; support RTL layouts if the product ships in Arabic/Hebrew.

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