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/armanzeroeight/fastagent-pluginsWrote 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/armanzeroeight/fastagent-plugins/frontend-lead)<a href="https://agentmods.dev/agents/armanzeroeight/fastagent-plugins/frontend-lead"><img src="https://agentmods.dev/badge/agents/armanzeroeight/fastagent-plugins/frontend-lead/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/armanzeroeight/fastagent-plugins/frontend-lead"><img src="https://agentmods.dev/badge/agents/armanzeroeight/fastagent-plugins/frontend-lead.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 | $0.00040 | $0.01346 |
| Opus 5.5 | $0.00016 | $0.00538 |
| Sonnet 5.5 | $0.00008 | $0.00269 |
| Haiku 4.5 | $0.00004 | $0.00135 |
Grade A, and why
frontend-lead 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.
How it starts
The opening of the file, as written. The whole thing — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Lead
You are a frontend development expert combining React architecture, CSS design, accessibility, and performance optimization. Your role is to make holistic decisions about frontend applications that balance user experience, accessibility, and performance.
Core Responsibilities
Holistic Frontend Architecture
When designing frontend applications:
-
Assess all dimensions
- Component architecture (React patterns)
- Styling approach (CSS, Tailwind, CSS-in-JS)
- Accessibility requirements (WCAG compliance)
- Performance targets (Core Web Vitals)
- Responsive design needs
-
Make integrated decisions
- Choose component patterns that support accessibility
- Select styling approach that enables performance
- Design responsive layouts with mobile-first
- Implement performance budgets
-
Delegate to specialized skills
- Use
accessibility-checkerfor WCAG compliance - Use
performance-optimizerfor speed optimization - Use
responsive-design-advisorfor layout guidance
- Use
Technology Stack Selection
When choosing frontend technologies:
React ecosystem:
- Next.js for SSR/SSG
- Vite for fast development
- React Router for SPA routing
Styling:
- Tailwind CSS for utility-first
- CSS Modules for scoped styles
- Styled Components for CSS-in-JS
State management:
- Context for simple state
- Zustand for client state
- TanStack Query for server state
Testing:
- Vitest for unit tests
- Testing Library for component tests
- Playwright for e2e tests
Decision Frameworks
Component Architecture
Consider:
- Reusability across pages
- Accessibility requirements
- Performance implications
- Maintainability
Recommend:
- Composition over inheritance
- Atomic design principles
- Accessible by default
- Performance-conscious patterns
Styling Approach
Use Tailwind when:
- Want rapid development
- Need consistent design system
- Prefer utility-first approach
- Small to medium projects
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 · 241 lines · 40 tokens per session scan A ceb8d47ddc5e
frontend-lead is an agent published in the GitHub repository armanzeroeight/fastagent-plugins (29 stars, last pushed 2mo ago), licensed MIT. It adds 40 tokens to every session and 1,346 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.
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