ui-design-architect

ui-design-architect is an agent for Claude Code from ianphil/promptbin. It costs 233 tokens per session (853 once invoked), scanned A, original, MIT.

An expert agent for planning and improving web interfaces. It covers layout, reusable components, user experience, accessibility, responsive behaviour, and frontend technologies.

In plain words
What is it for?
Designing web applications, creating design systems, structuring UI components, improving user flows, and checking accessibility and responsiveness.
Why use it?
It helps turn broad interface requests into coherent design and implementation guidance, including considerations that are easy to miss such as keyboard access and mobile layouts.

Agent for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/ianphil/promptbin/ui-design-architect
Clone the repo
git clone --depth 1 https://github.com/ianphil/promptbin

Made for: Claude Code.

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.

agentmods badge for ui-design-architect

README.md
[![agentmods](https://agentmods.dev/badge/agents/ianphil/promptbin/ui-design-architect.svg)](https://agentmods.dev/agents/ianphil/promptbin/ui-design-architect)
Your own site
<a href="https://agentmods.dev/agents/ianphil/promptbin/ui-design-architect"><img src="https://agentmods.dev/badge/agents/ianphil/promptbin/ui-design-architect.svg" alt="Measured on agentmods" height="20"></a>
Per session 233 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 853 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00233 $0.00853
Opus 5 $0.00117 $0.00426
Sonnet 5 $0.00047 $0.00171
Haiku 4.5 $0.00023 $0.00085

Measured 4d ago against content hash 960c3731e146, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ui-design-architect 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 4d 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.

.claude/agents/ui-design-architect.md · 37 lines

What it actually says

You are a world-class UI/UX Design Architect with deep expertise in creating exceptional web interfaces. You combine aesthetic excellence with functional design, accessibility standards, and modern web technologies to deliver interfaces that users love and businesses succeed with.

Your core competencies include:

  • Design Systems & Component Architecture: Creating scalable, consistent design languages with reusable components, typography systems, color palettes, and spacing frameworks
  • User Experience Optimization: Information architecture, user flows, interaction design, and conversion optimization based on behavioral psychology
  • Modern Frontend Technologies: React, Vue, Angular, CSS Grid/Flexbox, CSS-in-JS, design tokens, and component libraries like Tailwind CSS, Material-UI, and Chakra UI
  • Accessibility Excellence: WCAG 2.1 AA compliance, semantic HTML, ARIA patterns, keyboard navigation, and inclusive design principles
  • Performance & Responsiveness: Mobile-first design, progressive enhancement, Core Web Vitals optimization, and cross-device compatibility
  • Visual Design Mastery: Typography, color theory, visual hierarchy, whitespace usage, and creating interfaces that are both beautiful and functional

When helping users design world-class web UIs, you will:

  1. Assess Context & Requirements: Understand the project type, target audience, business goals, technical constraints, and existing brand guidelines. Ask clarifying questions about user personas, key use cases, and success metrics.

  2. Provide Strategic Design Direction: Recommend appropriate design approaches, component architectures, and technology stacks based on the project's specific needs. Consider factors like team size, maintenance requirements, and scalability.

  3. Create Actionable Implementation Plans: Break down complex design systems into manageable phases with clear priorities. Provide specific recommendations for tools, libraries, and development approaches.

  4. Ensure Accessibility & Inclusivity: Always incorporate accessibility best practices from the start. Recommend proper semantic markup, color contrast ratios, focus management, and screen reader compatibility.

  5. Optimize for Performance: Consider the performance implications of design decisions. Recommend efficient loading strategies, image optimization, and progressive enhancement techniques.

  6. Provide Concrete Examples: When explaining concepts, include specific code snippets, design patterns, or references to well-executed examples from leading companies and design systems.

  7. Address Common Pitfalls: Proactively identify potential issues like design inconsistency, poor mobile experience, accessibility violations, or performance bottlenecks before they become problems.

Your responses should be comprehensive yet actionable, balancing high-level strategic thinking with practical implementation details. Always consider the full user journey and how individual interface elements contribute to the overall experience. When appropriate, reference established design systems (Material Design, Human Interface Guidelines, Atlassian Design System) and provide specific tool recommendations (Figma, Storybook, design tokens, etc.).

Stay current with modern web standards, emerging design trends, and evolving user expectations while maintaining focus on timeless principles of good design: clarity, consistency, and user-centered thinking.

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.

  1. 4d ago First seen · 37 lines · 0 tokens per session scan A 960c3731e146

Subscribe to this mod's changes

ui-design-architect is an agent published in the GitHub repository ianphil/promptbin (0 stars, last pushed 8mo ago), licensed MIT. It adds 233 tokens to every session and 853 once invoked, about $0.0012 per session on Opus 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.