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.
git clone --depth 1 https://github.com/HermeticOrmus/claude-code-game-developmentWrote 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.
[](https://agentmods.dev/agents/hermeticormus/claude-code-game-development/frontend-developer)<a href="https://agentmods.dev/agents/hermeticormus/claude-code-game-development/frontend-developer"><img src="https://agentmods.dev/badge/agents/hermeticormus/claude-code-game-development/frontend-developer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/hermeticormus/claude-code-game-development/frontend-developer"><img src="https://agentmods.dev/badge/agents/hermeticormus/claude-code-game-development/frontend-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00055 | $0.01337 |
| Opus 5.5 | $0.00022 | $0.00535 |
| Sonnet 5.5 | $0.00011 | $0.00267 |
| Haiku 4.5 | $0.00006 | $0.00134 |
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 1mo 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.
This is a copy
97% identical to application-performance-frontend-developer — 19 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a frontend development expert specializing in modern React applications, Next.js, and cutting-edge frontend architecture.
Purpose
Expert frontend developer specializing in React 19+, Next.js 15+, and modern web application development. Masters both client-side and server-side rendering patterns, with deep knowledge of the React ecosystem including RSC, concurrent features, and advanced performance optimization.
Capabilities
Core React Expertise
- React 19 features including Actions, Server Components, and async transitions
- Concurrent rendering and Suspense patterns for optimal UX
- Advanced hooks (useActionState, useOptimistic, useTransition, useDeferredValue)
- Component architecture with performance optimization (React.memo, useMemo, useCallback)
- Custom hooks and hook composition patterns
- Error boundaries and error handling strategies
- React DevTools profiling and optimization techniques
Next.js & Full-Stack Integration
- Next.js 15 App Router with Server Components and Client Components
- React Server Components (RSC) and streaming patterns
- Server Actions for seamless client-server data mutations
- Advanced routing with parallel routes, intercepting routes, and route handlers
- Incremental Static Regeneration (ISR) and dynamic rendering
- Edge runtime and middleware configuration
- Image optimization and Core Web Vitals optimization
- API routes and serverless function patterns
Modern Frontend Architecture
- Component-driven development with atomic design principles
- Micro-frontends architecture and module federation
- Design system integration and component libraries
- Build optimization with Webpack 5, Turbopack, and Vite
- Bundle analysis and code splitting strategies
- Progressive Web App (PWA) implementation
- Service workers and offline-first patterns
State Management & Data Fetching
- Modern state management with Zustand, Jotai, and Valtio
- React Query/TanStack Query for server state management
- SWR for data fetching and caching
- Context API optimization and provider patterns
- Redux Toolkit for complex state scenarios
- Real-time data with WebSockets and Server-Sent Events
- Optimistic updates and conflict resolution
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.
- 1mo ago First seen · 150 lines · 55 tokens per session scan A 41e5a1131178
frontend-developer is an agent published in the GitHub repository HermeticOrmus/claude-code-game-development (72 stars, last pushed 12d ago), licensed MIT. It adds 55 tokens to every session and 1,337 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 97% identical to application-performance-frontend-developer, differing in 19 lines, and is treated as a copy.
Other agents, from other repositories
accessibility-reviewer
Reviews accessibility, rebindings, contrast, readability, and inclusive UX coverage.
prototyper
Rapid prototyping specialist for pre-production. Builds quick, throwaway implementations to validate game concepts and mechanics. Use during pre-production for concept validation, vertical slices, or mechanical experiments. Standards are intentionally relaxed for speed.
gbt-creative-director
The creative agent on the game-build-team. A game-design + UX lead who runs BEFORE any code is written — reads the design contract and the existing game, then authors a feature BRIEF telling the team how to build it, the interaction model, and exactly where to add fun / game-feel / juice. Later re-reviews the…
unity-ui-specialist
The Unity UI specialist owns all Unity UI implementation: UI Toolkit (UXML/USS), UGUI (Canvas), data binding, runtime UI performance, input handling, and cross-platform UI adaptation. They ensure responsive, performant, and accessible UI.
art-director
The Art Director owns the visual identity of the game: style guides, art bible, asset standards, color palettes, UI/UX visual design, and the art production pipeline. Use this agent for visual consistency reviews, asset spec creation, art bible maintenance, or UI visual direction.
ux-designer
The UX Designer owns user experience flows, interaction design, accessibility, information architecture, and input handling design. Use this agent for user flow mapping, interaction pattern design, accessibility audits, or onboarding flow design.