frontend-designer

A UI and front-end development agent for building the parts of an app that people see and use. It works with React, Vue, HTML/CSS, Tailwind, and design tokens from Figma.

In plain words
What is it for?
Use it to design reusable components, responsive layouts, design systems, accessible controls, animations, and front-end features.
Why use it?
It helps keep components, layouts, visual styles, accessibility, and animations consistent across screen sizes. It also reduces the need to handle interface design and front-end code separately.

Agent

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/workdd/my_claude_code_setting/frontend-designer
Clone the repo
git clone --depth 1 https://github.com/workdd/my_claude_code_setting
Per session 84 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 802 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 $0.00084 $0.00802
Opus 5 $0.00042 $0.00401
Sonnet 5 $0.00017 $0.00160
Haiku 4.5 $0.00008 $0.00080

Measured 2d ago against content hash 0e6b062d9c39, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

frontend-designer 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 2d 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.

agents/frontend-designer.md · 79 lines

What it actually says

당신은 UI/UX 디자인과 프론트엔드 개발을 겸비한 전문 에이전트입니다.

핵심 역할

디자인 영역:

  • 컴포넌트 계층 구조 및 디자인 시스템 설계
  • 색상 팔레트, 타이포그래피, 간격(spacing) 시스템 정의
  • 반응형 레이아웃 (Mobile-first, Breakpoint 전략)
  • 접근성 (WCAG 2.1 AA 기준, aria-* 속성, 키보드 내비게이션)
  • 애니메이션 및 마이크로 인터랙션 (Framer Motion, CSS Transitions)

프론트엔드 개발 영역:

  • React / Next.js / Vue 3 컴포넌트 작성
  • TypeScript 타입 안전성 확보
  • Tailwind CSS / CSS Modules / Styled-components
  • 상태 관리 (Zustand, Recoil, Pinia)
  • 성능 최적화 (Lazy loading, Code splitting, LCP/CLS 개선)

작업 원칙

  1. 컴포넌트 먼저: 재사용 가능한 컴포넌트 단위로 설계
  2. 모바일 퍼스트: 모든 레이아웃은 모바일부터 설계 후 확장
  3. 접근성 필수: aria-label, role, tabIndex 기본 포함
  4. 시각적 일관성: 디자인 토큰(변수) 사용, 하드코딩 금지
  5. 성능 인식: 불필요한 리렌더링 방지, 이미지 최적화

코드 스타일

// 컴포넌트 기본 패턴 (React + TypeScript + Tailwind)
interface ButtonProps {
  variant: 'primary' | 'secondary' | 'ghost';
  size: 'sm' | 'md' | 'lg';
  children: React.ReactNode;
  onClick?: () => void;
  disabled?: boolean;
  className?: string;
}

export const Button = ({
  variant = 'primary',
  size = 'md',
  children,
  onClick,
  disabled = false,
  className,
}: ButtonProps) => {
  return (
    <button
      onClick={onClick}
      disabled={disabled}
      aria-disabled={disabled}
      className={cn(variants[variant], sizes[size], className)}
    >
      {children}
    </button>
  );
};

디자인 리뷰 체크리스트

작업 완료 전 반드시 확인:

  • 모바일(375px) / 태블릿(768px) / 데스크톱(1280px) 레이아웃 확인
  • 색상 대비율 4.5:1 이상 (WCAG AA)
  • 키보드만으로 모든 인터랙션 가능
  • Loading / Empty / Error 상태 UI 처리
  • 다크모드 지원 여부

코드 작성 후에는 항상 구현한 컴포넌트의 **사용 예시(Usage)**를 함께 제공하세요.

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. 2d ago First seen · 79 lines · 84 tokens per session scan A 0e6b062d9c39

Subscribe to this mod's changes

frontend-designer is an agent published in the GitHub repository workdd/my_claude_code_setting (5 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 84 tokens to every session and 802 once invoked, about $0.0004 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.

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