senior-frontend

senior-frontend is a skill for Claude Code, Codex from ricneves-ai/flowgrammers-skills. It costs 59 tokens per session (2,989 once invoked), scanned A, original, MIT.

A guide for building frontend web applications, the part of a website or app that users see and interact with, using React, Next.js, TypeScript, and Tailwind CSS. It includes project setup, component creation, performance checks, accessibility, and testing.

In plain words
What is it for?
Use it to scaffold React or Next.js projects, generate components, configure features such as authentication and forms, analyse bundle size, improve Next.js performance, and check accessibility.
Why use it?
It provides reusable patterns and tools for starting frontend projects, reviewing code, finding large browser bundles, and addressing usability or performance problems.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python scripts/frontend_scaffolder.py my-app --template nextjs.

Good fit Use it to scaffold React or Next.js projects, generate components, configure features such as authentication and forms, analyse bundle size, improve Next.js performance, and check accessibility.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/ricneves-ai/flowgrammers-skills
agentmods
npx agentmods add skills/ricneves-ai/flowgrammers-skills/senior-frontend

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for senior-frontend

README.md
[![agentmods](https://agentmods.dev/badge/skills/ricneves-ai/flowgrammers-skills/senior-frontend/github.svg)](https://agentmods.dev/skills/ricneves-ai/flowgrammers-skills/senior-frontend)
Your own site
<a href="https://agentmods.dev/skills/ricneves-ai/flowgrammers-skills/senior-frontend"><img src="https://agentmods.dev/badge/skills/ricneves-ai/flowgrammers-skills/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.

agentmods 80×15 button for senior-frontend

Your own site · 80×15
<a href="https://agentmods.dev/skills/ricneves-ai/flowgrammers-skills/senior-frontend"><img src="https://agentmods.dev/badge/skills/ricneves-ai/flowgrammers-skills/senior-frontend.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,989 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00059 $0.02989
Opus 5 $0.00030 $0.01494
Sonnet 5 $0.00012 $0.00598
Haiku 4.5 $0.00006 $0.00299

Measured 9d ago against content hash fcec63ccdccf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

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).then(r => r.json()).then(setData).finally(() => setLoading(false));
engineering-team/senior-frontend/SKILL.md · 476 lines

How it starts

The opening of the file, as written. The whole thing — 476 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Desenvolvedor Frontend Sênior

Padrões de desenvolvimento frontend, otimização de performance e ferramentas de automação para aplicações React/Next.js.

Sumário


Scaffolding de Projeto

Gere um novo projeto Next.js ou React com TypeScript, Tailwind CSS e configurações de melhores práticas.

Workflow: Criar Novo Projeto Frontend

  1. Execute o scaffolder com o nome e template do projeto:

    python scripts/frontend_scaffolder.py my-app --template nextjs
    
  2. Adicione funcionalidades opcionais (auth, api, forms, testing, storybook):

    python scripts/frontend_scaffolder.py dashboard --template nextjs --features auth,api
    
  3. Navegue até o projeto e instale as dependências:

    cd my-app && npm install
    
  4. Inicie o servidor de desenvolvimento:

    npm run dev
    

Opções do Scaffolder

Opção Descrição
--template nextjs Next.js 14+ com App Router e Server Components
--template react React + Vite com TypeScript
--features auth Adicionar autenticação NextAuth.js
--features api Adicionar React Query + cliente de API
--features forms Adicionar React Hook Form + validação Zod
--features testing Adicionar Vitest + Testing Library
--dry-run Pré-visualizar arquivos sem criá-los

Estrutura Gerada (Next.js)

my-app/
├── app/
│   ├── layout.tsx        # Layout raiz com fontes
│   ├── page.tsx          # Página inicial
│   ├── globals.css       # Tailwind + variáveis CSS
│   └── api/health/route.ts
├── components/
│   ├── ui/               # Button, Input, Card
│   └── layout/           # Header, Footer, Sidebar
├── hooks/                # useDebounce, useLocalStorage
├── lib/                  # utils (cn), constants
├── types/                # interfaces TypeScript
├── tailwind.config.ts
├── next.config.js
└── package.json

Read the full file on GitHub · 476 lines

Changes

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.

  1. 9d ago First seen · 476 lines · 59 tokens per session scan A fcec63ccdccf

Subscribe to this mod's changes

senior-frontend is a skill published in the GitHub repository ricneves-ai/flowgrammers-skills (112 stars, last pushed 3mo ago), licensed MIT. It adds 59 tokens to every session and 2,989 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 2026-09-03.

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