A guide for designing and reviewing web interfaces. It covers how people use interfaces, interaction patterns, accessibility under WCAG guidelines, and modern CSS styling.

Use it when designing frontend interfaces, creating components, or reviewing layout, colour, typography, and interaction choices.

It helps developers make interface decisions consistently and spot usability or accessibility problems. WCAG is a set of guidelines for making websites usable by people with disabilities.

aio-uiux — Skill for Claude Code by aiocean/claude-plugins

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code

/plugin marketplace add aiocean/claude-plugins

Claude Code

/plugin install aio-design-system

Made for: Claude Code.

Or install aio-design-system, the plugin that ships this one along with the rest of its 3 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/aiocean/claude-plugins/aio-uiux/github.svg)](https://agentmods.dev/skills/aiocean/claude-plugins/aio-uiux)

Your own site

<a href="https://agentmods.dev/skills/aiocean/claude-plugins/aio-uiux"><img src="https://agentmods.dev/badge/skills/aiocean/claude-plugins/aio-uiux/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/aiocean/claude-plugins/aio-uiux"><img src="https://agentmods.dev/badge/skills/aiocean/claude-plugins/aio-uiux.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 6,303 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00057	$0.06303
Opus 5.5	$0.00023	$0.02521
Sonnet 5.5	$0.00011	$0.01261
Haiku 4.5	$0.00006	$0.00630

Measured 1mo ago against content hash 6d9326ae6b99, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aio-uiux scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/aio-design-system/skills/aio-uiux/SKILL.md · 415 lines

How it starts

The opening of the file, as written. The whole thing — 415 lines — stays where its author put it; the contents beside it link to each section on GitHub.

UI/UX Design Advisor

"Design is not just what it looks like and feels like. Design is how it works." — Steve Jobs

Workflow: How to Use This Skill

When this skill is triggered, follow these steps. Do NOT just dump reference content — actively analyze the user's specific design challenge and provide targeted, actionable guidance.

Step 1: UNDERSTAND — Identify the Design Challenge

Before selecting references, understand:

What is being built? (component, page, full app, design system)
What's the context? (marketing site, SaaS dashboard, mobile app, e-commerce)
What aspect needs help? (visual design, accessibility, UX flow, performance)
What tech stack? (vanilla CSS, Tailwind, React, Vue, etc.)
Who are the users? (general public, power users, accessibility needs)

If the user's message already contains enough context, proceed directly to Step 2.

Step 2: SEARCH — Find Relevant References

First, run semantic search with the user's design challenge to find the most relevant topics:

UX="${CLAUDE_PLUGIN_ROOT}/skills/aio-uiux/scripts"
npx tsx "$UX/search-uiux.ts" "<user's design challenge>" --top 5 --json

Read the full markdown file for each top result before proceeding. Then cross-reference with the routing table:

Design Challenge	Start With
Building a new component	Component Patterns → Design Systems → Accessibility
Making something look better	Visual Hierarchy → Whitespace → Color → Typography
Choosing colors	Color Theory → Color Harmonies → Semantic Colors → Accessibility Contrast
Typography decisions	Type Scale → Font Pairing → Readability → Fluid Typography
Layout / spacing issues	Spacing Systems → CSS Grid → Flexbox → Content Width
Form design	Form Design → Form Accessibility → Error Messages → Validation
Navigation design	Navigation Patterns → Navigation Components → Mobile UX
Accessibility audit/fix	WCAG Guide → ARIA Patterns → Keyboard Nav → Testing Checklist
Animation / transitions	Animation Principles → Motion System → CSS Transitions → Micro-animations
Performance concerns	Perceived Performance → Core Web Vitals → Image Optimization → Font Performance
Dark mode	Theming & Dark Mode → Semantic Colors → Color Accessibility
Responsive / mobile	Mobile-First → Fluid Design → Responsive Patterns → Touch Targets
Design system setup	Design Tokens → Atomic Design → Component API → Tailwind Patterns
UX flow / user behavior	UX Psychology → UX Laws → Decision Making → Cognitive Load
Writing UI text	Microcopy → Error Messages → Voice & Tone → Conversion Copy
Modern CSS techniques	Custom Properties → Container Queries → :has() → Cascade Layers
Loading / empty states	State Management UX → Perceived Performance → Loading Patterns → Skeleton Screens
Buttons / CTAs	Buttons → Visual Hierarchy → Von Restorff Effect → Conversion Copy

Read the full file on GitHub · 415 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 415 lines · 57 tokens per session scan A 6d9326ae6b99

Subscribe to this mod's changes

aio-uiux is a skill published in the GitHub repository aiocean/claude-plugins (4 stars, last pushed 2d ago), licensed MIT. It adds 57 tokens to every session and 6,303 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

CSS and styling Claude Code Design and UX Frontend ai-assistant ai-coding anthropic claude cli-tools

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