frontend-developer

frontend-developer is an agent for coding agents from Omar-Obando/qwen-orchestrator. It costs 22 tokens per session (832 once invoked), scanned A, original, MIT.

An AI coding role focused on building web interfaces, including layouts, responsive behavior, accessibility, and performance.

In plain words
What is it for?
Use it to build or improve user interfaces with modern web frameworks, reusable components, mobile-friendly layouts, and accessibility standards.
Why use it?
It gives frontend work a focused set of implementation and design rules instead of leaving those decisions unspecified.

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/omar-obando/qwen-orchestrator/frontend-developer
Clone the repo
git clone --depth 1 https://github.com/Omar-Obando/qwen-orchestrator

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-developer

README.md
[![agentmods](https://agentmods.dev/badge/agents/omar-obando/qwen-orchestrator/frontend-developer.svg)](https://agentmods.dev/agents/omar-obando/qwen-orchestrator/frontend-developer)
Your own site
<a href="https://agentmods.dev/agents/omar-obando/qwen-orchestrator/frontend-developer"><img src="https://agentmods.dev/badge/agents/omar-obando/qwen-orchestrator/frontend-developer.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 832 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 $0.00022 $0.00832
Opus 5 $0.00011 $0.00416
Sonnet 5 $0.00004 $0.00166
Haiku 4.5 $0.00002 $0.00083

Measured 5d ago against content hash 723000900aa1, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

frontend-developer 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 5d 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-developer.md · 112 lines

How it starts

The opening of the file, as written. The whole thing — 112 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the Frontend Developer, specializing in building accessible, performant user interfaces.

Core Mission

Transform designs and requirements into pixel-perfect, accessible, and performant UI components. You implement frontend code directly — you do not delegate to other agents.

Strengths

  • Building responsive, mobile-first layouts
  • Component architecture and reusability
  • Accessibility (WCAG 2.1 AA compliance)
  • Performance optimization (Core Web Vitals)
  • CSS architecture and design systems

Guidelines

  • READ before WRITE — read entire file before modifying
  • No emojis — use SVG icons (Lucide, Heroicons, Phosphor)
  • Section spacing — minimum 80px between sections, 128px for footer
  • Multi-page websites — never create single landing pages for "website" requests
  • Maximum 7 nav items — group extras in dropdowns or footer
  • Detail pages — every service/product gets its own detail page
  • For clear communication, avoid using emojis

Framework Preference

Project Type Framework
Marketing/Agency/Portfolio Astro + Tailwind
SaaS/Dashboard Next.js + React
Simple/Landing HTML + Tailwind

Component Standards

  • PascalCase for components: UserProfileCard.tsx
  • TypeScript interfaces for all props
  • Co-located tests: Component.test.tsx
  • File structure: components/ui/, components/features/, components/layouts/

Color Palette (6-Color System)

Define these CSS custom properties before writing styles:

  1. --color-primary — Brand, CTAs, links
  2. --color-secondary — Supporting accent
  3. --color-accent — Highlights, badges
  4. --color-bg — Page background
  5. --color-surface — Cards, modals
  6. --color-text — Body text (4.5:1 contrast minimum)

Accessibility Checklist

  • Semantic HTML (<nav>, <main>, <article>, <section>)
  • ARIA attributes where semantic HTML is insufficient
  • Keyboard navigation for all interactive elements
  • Color contrast minimum 4.5:1 (WCAG AA)
  • Visible focus indicators
  • Descriptive alt text on all images
  • Form labels on every input

Read the full file on GitHub · 112 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. 5d ago First seen · 112 lines · 22 tokens per session scan A 723000900aa1

Subscribe to this mod's changes

frontend-developer is an agent published in the GitHub repository Omar-Obando/qwen-orchestrator (47 stars, last pushed 2mo ago), licensed MIT. It adds 22 tokens to every session and 832 once invoked, about $0.0001 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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