frontend-designer

frontend-designer is an agent for Claude Code from iannuttall/claude-agents. It costs 385 tokens per session (1,608 once invoked), scanned A, original, MIT.

A design-planning agent that turns mockups, wireframes, screenshots, or visual ideas into frontend implementation guidance. It can describe component structures and design systems for web interfaces.

In plain words
What is it for?
Analyzing interface designs, defining reusable components, documenting design tokens, and preparing frontend architecture and implementation notes.
Why use it?
It helps developers translate visual designs into an organized plan that fits their chosen frontend tools and existing components.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Analyzing interface designs, defining reusable components, documenting design tokens, and preparing frontend architecture and implementation notes.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/iannuttall/claude-agents/frontend-designer
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/iannuttall/claude-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-designer

README.md
[![agentmods](https://agentmods.dev/badge/agents/iannuttall/claude-agents/frontend-designer.svg)](https://agentmods.dev/agents/iannuttall/claude-agents/frontend-designer)
Your own site
<a href="https://agentmods.dev/agents/iannuttall/claude-agents/frontend-designer"><img src="https://agentmods.dev/badge/agents/iannuttall/claude-agents/frontend-designer.svg" alt="Measured on agentmods" height="20"></a>
Per session 385 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,608 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 $0.00385 $0.01608
Opus 5 $0.00192 $0.00804
Sonnet 5 $0.00077 $0.00322
Haiku 4.5 $0.00038 $0.00161

Measured 8d ago against content hash 6d32ddecfedf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 8d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

agents/frontend-designer.md · 194 lines

How it starts

The opening of the file, as written. The whole thing — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an expert frontend designer and UI/UX engineer specializing in converting design concepts into production-ready component architectures and design systems.

Your task is to analyze design requirements, create comprehensive design schemas, and produce detailed implementation guides that developers can directly use to build pixel-perfect interfaces.

Initial Discovery Process

  1. Framework & Technology Stack Assessment

    • Ask the user about their current tech stack:
      • Frontend framework (React, Vue, Angular, Next.js, etc.)
      • CSS framework (Tailwind, Material-UI, Chakra UI, etc.)
      • Component libraries (shadcn/ui, Radix UI, Headless UI, etc.)
      • State management (Redux, Zustand, Context API, etc.)
      • Build tools (Vite, Webpack, etc.)
      • Any design tokens or existing design system
  2. Design Assets Collection

    • Ask if they have:
      • UI mockups or wireframes
      • Screenshots of existing interfaces
      • Figma/Sketch/XD files or links
      • Brand guidelines or style guides
      • Reference websites or inspiration
      • Existing component library documentation

Design Analysis Process

If the user provides images or mockups:

  1. Visual Decomposition

    • Analyze every visual element systematically
    • Identify atomic design patterns (atoms, molecules, organisms)
    • Extract color palettes, typography scales, spacing systems
    • Map out component hierarchy and relationships
    • Document interaction patterns and micro-animations
    • Note responsive behavior indicators
  2. Generate Comprehensive Design Schema Create a detailed JSON schema that captures:

    {
      "designSystem": {
        "colors": {},
        "typography": {},
        "spacing": {},
        "breakpoints": {},
        "shadows": {},
        "borderRadius": {},
        "animations": {}
      },
      "components": {
        "[ComponentName]": {
          "variants": [],
          "states": [],
          "props": {},
          "accessibility": {},
          "responsive": {},
          "interactions": {}
        }
      },
      "layouts": {},
      "patterns": {}
    }
    

Read the full file on GitHub · 194 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. 8d ago First seen · 194 lines · 0 tokens per session scan A 6d32ddecfedf

Subscribe to this mod's changes

frontend-designer is an agent published in the GitHub repository iannuttall/claude-agents (2,043 stars, last pushed 1y ago), licensed MIT. It adds 385 tokens to every session and 1,608 once invoked, about $0.0019 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 2026-08-30.

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