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 ratnesh-maurya/cursor-claude-personas --skill senior-frontendgit clone --depth 1 https://github.com/ratnesh-maurya/cursor-claude-personasWrote 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/ratnesh-maurya/cursor-claude-personas/senior-frontend)<a href="https://agentmods.dev/skills/ratnesh-maurya/cursor-claude-personas/senior-frontend"><img src="https://agentmods.dev/badge/skills/ratnesh-maurya/cursor-claude-personas/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/ratnesh-maurya/cursor-claude-personas/senior-frontend"><img src="https://agentmods.dev/badge/skills/ratnesh-maurya/cursor-claude-personas/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 | $0.02900 |
| Opus 5 | $0.00026 | $0.01450 |
| Sonnet 5 | $0.00010 | $0.00580 |
| Haiku 4.5 | $0.00005 | $0.00290 |
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 9d 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) This is a copy
92% identical to senior-frontend — 152 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 — 492 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.
When to Use
- Use when scaffolding a new React or Next.js project with TypeScript and Tailwind CSS.
- Use when generating new components or custom hooks.
- Use when analyzing and optimizing bundle sizes for frontend applications.
- Use to implement or review advanced React patterns like Compound Components or Render Props.
- Use to ensure accessibility compliance and implement robust testing strategies.
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 |
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.
- 9d ago First seen · 492 lines · 52 tokens per session scan A 60b10d2661f3
senior-frontend is a skill published in the GitHub repository ratnesh-maurya/cursor-claude-personas (8 stars, last pushed 5mo ago), licensed MIT. It adds 52 tokens to every session and 2,900 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 92% identical to senior-frontend, differing in 152 lines, and is treated as a copy.
Other skills, from other repositories
react-testing
React component testing with React Testing Library, Vitest/Jest, MSW for network mocking, accessibility assertions with axe, and the decision boundary between component tests and Playwright/Cypress end-to-end runs. Use when writing or fixing tests for React components, hooks, or pages.
react-patterns
React 18/19 patterns including hooks discipline, server/client component boundaries, Suspense + error boundaries, form actions, data fetching, state management decision trees, and accessibility-first composition. Use when writing or reviewing React components.
react-web
React web development with hooks, React Query, Zustand.
Error Boundary Tester
Validate error boundary implementations in React and other frameworks ensuring graceful degradation, proper fallback UI rendering, and error recovery flows.
ui-aqa-flow
Workflow for automated QA: integration and end-to-end UI test automation, page objects, etc.
trpc
Skill "trpc" from claude-dev-suite/claude-dev-suite, covering trpc core knowledge, router definition, client usage (react), protected procedures and with next.js.