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.
npx skills add yezannnnn/agentGroup --skill senior-frontendgit clone --depth 1 https://github.com/yezannnnn/agentGroupWrote 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/skills/yezannnnn/agentgroup/senior-frontend)<a href="https://agentmods.dev/skills/yezannnnn/agentgroup/senior-frontend"><img src="https://agentmods.dev/badge/skills/yezannnnn/agentgroup/senior-frontend/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/skills/yezannnnn/agentgroup/senior-frontend"><img src="https://agentmods.dev/badge/skills/yezannnnn/agentgroup/senior-frontend.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 | $0.00052 | $0.02763 |
| Opus 5 | $0.00026 | $0.01381 |
| Sonnet 5 | $0.00010 | $0.00553 |
| Haiku 4.5 | $0.00005 | $0.00276 |
Grade A, and why
senior-frontend scanned grade A with 1 finding 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 10d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
fetch(url).then(r => r.json()).then(setData).finally(() => setLoading(false)); Copies of this mod
3 near-identical copies found in the catalogue:
- senior-frontend — 97% identical, 13 lines differ
- senior-frontend — 92% identical, 152 lines differ
- senior-frontend — 88% identical, 163 lines differ
How it starts
The opening of the file, as written. The whole thing — 478 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Senior Frontend
Frontend development patterns, performance optimization, and automation tools for React/Next.js applications.
Table of Contents
- Project Scaffolding
- Component Generation
- Bundle Analysis
- React Patterns
- Next.js Optimization
- Accessibility and Testing
Project Scaffolding
Generate a new Next.js or React project with TypeScript, Tailwind CSS, and best practice configurations.
Workflow: Create New Frontend Project
-
Run the scaffolder with your project name and template:
python scripts/frontend_scaffolder.py my-app --template nextjs -
Add optional features (auth, api, forms, testing, storybook):
python scripts/frontend_scaffolder.py dashboard --template nextjs --features auth,api -
Navigate to the project and install dependencies:
cd my-app && npm install -
Start the development server:
npm run dev
Scaffolder Options
| Option | Description |
|---|---|
--template nextjs |
Next.js 14+ with App Router and Server Components |
--template react |
React + Vite with TypeScript |
--features auth |
Add NextAuth.js authentication |
--features api |
Add React Query + API client |
--features forms |
Add React Hook Form + Zod validation |
--features testing |
Add Vitest + Testing Library |
--dry-run |
Preview files without creating them |
Generated Structure (Next.js)
my-app/
├── app/
│ ├── layout.tsx # Root layout with fonts
│ ├── page.tsx # Home page
│ ├── globals.css # Tailwind + CSS variables
│ └── api/health/route.ts
├── components/
│ ├── ui/ # Button, Input, Card
│ └── layout/ # Header, Footer, Sidebar
├── hooks/ # useDebounce, useLocalStorage
├── lib/ # utils (cn), constants
├── types/ # TypeScript interfaces
├── tailwind.config.ts
├── next.config.js
└── package.json
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 478 lines · 52 tokens per session scan A 632776de535f
senior-frontend is a skill published in the GitHub repository yezannnnn/agentGroup (149 stars, last pushed 3mo ago), licensed MIT. It adds 52 tokens to every session and 2,763 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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