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 frontend-developergit 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/frontend-developer)<a href="https://agentmods.dev/skills/ratnesh-maurya/cursor-claude-personas/frontend-developer"><img src="https://agentmods.dev/badge/skills/ratnesh-maurya/cursor-claude-personas/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/skills/ratnesh-maurya/cursor-claude-personas/frontend-developer"><img src="https://agentmods.dev/badge/skills/ratnesh-maurya/cursor-claude-personas/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 | $0.00034 | $0.01454 |
| Opus 5.5 | $0.00014 | $0.00582 |
| Sonnet 5.5 | $0.00007 | $0.00291 |
| Haiku 4.5 | $0.00003 | $0.00145 |
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
92% identical to frontend-developer — 10 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 — 170 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.
Use this skill when
- Building React or Next.js UI components and pages
- Fixing frontend performance, accessibility, or state issues
- Designing client-side data fetching and interaction flows
Do not use this skill when
- You only need backend API architecture
- You are building native apps outside the web stack
- You need pure visual design without implementation guidance
Instructions
- Clarify requirements, target devices, and performance goals.
- Choose component structure and state or data approach.
- Implement UI with accessibility and responsive behavior.
- Validate performance and UX with profiling and audits.
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
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 · 170 lines · 34 tokens per session scan A d2c0b7f734f9
frontend-developer is a skill published in the GitHub repository ratnesh-maurya/cursor-claude-personas (11 stars, last pushed 7mo ago), licensed MIT. It adds 34 tokens to every session and 1,454 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 92% identical to frontend-developer, differing in 10 lines, and is treated as a copy.
Other skills, from other repositories
vercel-react-native-skills
React Native and Expo best practices for building performant mobile apps. Use when building React Native components, optimizing list performance, implementing animations, or working with native modules. Triggers on tasks involving React Native, Expo, mobile performance, or native platform APIs.
frontend
Builds, styles, and polishes anything drawn with HTML, CSS, or SVG: web UI, pages, components, HTML reports rendered to PDF or print, figures, PNG/SVG diagrams, slides, and images for Notion or Slack. Use for any styling, layout, animation, or visual-quality task, or when asked to make something look or feel a certain…
cometchat-react-v7-core
Add CometChat chat to a React app end-to-end — detect the project, get & verify dashboard credentials, init→login→render with CometChatProvider, and the drop-in conversation UI. The core knowledge every other React v7 skill builds on. Triggers: 'add chat to my react app', 'integrate cometchat react', 'set up cometchat…
cometchat-react-v7-placement
Where CometChat chat goes in a React app shell and how to wire each layout — full-screen, sidebar/split, popup/widget, or embedded in an existing page. Triggers: 'add chat as a sidebar', 'full screen chat page', 'chat popup widget', 'embed chat in my dashboard'.
cometchat-react-v7-calls
Add voice & video calling to a React app with the CometChat v7 UI Kit — install the Calls SDK, enable calling on the UIKit settings, mount the incoming-call surface, and wire 1:1 ring / group join. Bakes the real gotchas (ms idle-timeout, zero-dimension call surface, Next.js SSR, no group-ring, HTTPS/getUserMedia).…
cometchat-react-v7-production
Ship a CometChat React v7 integration safely — server-minted auth tokens instead of the Auth Key, correct env prefixes per bundler, bundle hygiene, and a pre-launch checklist. Triggers: 'is this production ready', 'auth token instead of auth key react', 'secure my cometchat react setup', 'production build config…