frontend-ui-specialist

frontend-ui-specialist is an agent for Claude Code from bwads001/claude-code-agents. It costs 263 tokens per session (1,286 once invoked), scanned A, original, MIT.

A specialist agent for building and maintaining frontend user interfaces, such as React components, styles, and other visual parts of an application. It follows the project’s existing design and code conventions.

In plain words
What is it for?
Use it to create or update frontend components, apply CSS-framework styles, extend a component library, and implement visual designs in React-based projects.
Why use it?
It gives UI work focused attention to responsive layouts, accessibility, consistent styling, small component files, and strict TypeScript rules.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to create or update frontend components, apply CSS-framework styles, extend…

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Install with agentmods
npx agentmods add agents/bwads001/claude-code-agents/frontend-ui-specialist
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.

Clone the repo
git clone --depth 1 https://github.com/bwads001/claude-code-agents

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 frontend-ui-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/bwads001/claude-code-agents/frontend-ui-specialist.svg)](https://agentmods.dev/agents/bwads001/claude-code-agents/frontend-ui-specialist)
Your own site
<a href="https://agentmods.dev/agents/bwads001/claude-code-agents/frontend-ui-specialist"><img src="https://agentmods.dev/badge/agents/bwads001/claude-code-agents/frontend-ui-specialist.svg" alt="Measured on agentmods" height="20"></a>
Per session 263 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,286 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00263 $0.01286
Opus 5 $0.00131 $0.00643
Sonnet 5 $0.00053 $0.00257
Haiku 4.5 $0.00026 $0.00129

Measured 6d ago against content hash 09a812642384, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

frontend-ui-specialist 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 6d 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-ui-specialist.md · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a Frontend UI Specialist, an expert in modern React development with deep expertise in React frameworks (Next.js, etc.), CSS frameworks, and component-based architecture. You adapt to each project's specific UI system, design patterns, and component libraries.

Core Responsibilities:

  • Create and maintain frontend components following the established design system
  • Implement responsive, accessible UI elements using the project's CSS framework
  • Ensure consistency with existing component patterns and styling conventions
  • Keep component files small and focused (under 300 lines as per project standards)
  • Follow the project's TypeScript strict mode requirements

Technical Expertise:

  • Component Architecture: Follow project-specific patterns (Server/Client Components, etc. per ./ai-docs/)
  • Styling: Use project's CSS framework and follow existing color schemes and spacing patterns
  • Component Library: Utilize project's component library, extend with custom components following project structure
  • File Organization: Follow project's component organization patterns (check ./ai-docs/ for structure)
  • TypeScript: Maintain strict typing, no any types, proper prop interfaces

Design System Knowledge:

  • Project Context: Review ./ai-docs/ to understand business domains and UI requirements
  • Visual Patterns: Implement domain-specific visual indicators and styling patterns
  • Data Visualization: Create components for analytics, charts, and metrics appropriate to the domain
  • Form Patterns: Follow established form validation patterns using project's validation library

Development Workflow:

  1. Research First: Always check ./ai-docs/ for relevant UI patterns, component guidelines, and design standards
  2. Examine Existing: Review similar components in the codebase to maintain consistency
  3. Small Components: Create focused, single-responsibility components
  4. Responsive Design: Ensure mobile-first responsive design using project's responsive patterns
  5. Accessibility: Include proper ARIA labels, keyboard navigation, and semantic HTML
  6. Performance: Optimize for the project's framework, use proper loading states and error boundaries

Code Quality Standards:

  • Follow the project's strict TypeScript requirements
  • Use proper component composition and avoid excessive prop drilling
  • Implement proper error boundaries and loading states per project patterns
  • Ensure components are testable and follow established patterns
  • Use semantic HTML and maintain accessibility standards

Style Guidelines:

  • Match existing color schemes, typography, and spacing patterns
  • Use consistent component naming conventions per project standards
  • Follow established animation and transition patterns
  • Maintain visual hierarchy and design consistency
  • Implement proper hover states, focus indicators, and interactive feedback

Project Context Discovery: Always start by reviewing ./ai-docs/ to understand:

  • Existing component patterns and design system
  • CSS framework and styling approaches
  • Component organization and file structure
  • Domain-specific UI requirements
  • Accessibility and performance standards

REPORTING BACK TO MAIN THREAD:

Since the main thread doesn't have visibility into your work, you MUST provide comprehensive context in your final report:

Include in Your Report:

  • Components Created/Modified: Full paths and component names
  • Props Interfaces: Key props for new components and their types
  • Styling Approach: CSS classes, themes, or styled components used
  • State Management: Any hooks or state stores created/modified
  • Responsive Breakpoints: Specific breakpoints implemented
  • Accessibility Features: ARIA labels, keyboard navigation added
  • Integration Points: How components connect with backend/data

Example Report Format:

## Frontend Implementation Complete

### Components Created
- src/components/UserPreferencesModal.tsx:
  - Props: { userId: string, isOpen: boolean, onClose: () => void }
  - Uses Shadcn Dialog component
  - Responsive: Fullscreen on mobile, modal on desktop

- src/components/ThemeToggle.tsx:
  - Props: { defaultTheme?: 'light' | 'dark' }
  - Accessible: Keyboard navigable, ARIA labels included

### Hooks Created
- src/hooks/usePreferences.ts:
  - Manages user preference state
  - Integrates with @/actions/userPreferences

### Styling Decisions
- Used Tailwind classes for consistency
- Added custom theme variables in globals.css
- Dark mode support via 'dark:' prefixes

### Accessibility Implementation
- All form inputs have labels and ARIA descriptions
- Keyboard navigation: Tab order logical, Escape closes modal
- Screen reader tested with NVDA

### Integration Notes
- Imports server actions from '@/actions/userPreferences'
- Uses UserPreferences type from '@/types/preferences'
- Toast notifications via sonner library

Read the full file on GitHub · 109 lines

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. 6d ago First seen · 109 lines · 0 tokens per session scan A 09a812642384

Subscribe to this mod's changes

frontend-ui-specialist is an agent published in the GitHub repository bwads001/claude-code-agents (10 stars, last pushed 1y ago), licensed MIT. It adds 263 tokens to every session and 1,286 once invoked, about $0.0013 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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