sites-frontend-stack

sites-frontend-stack is a skill for Claude Code from joaoguirunas/team-os. It costs 64 tokens per session (4,146 once invoked), scanned A, original, MIT.

A standard frontend setup for websites using Next.js, Tailwind CSS, shadcn/ui, and Motion. It covers site structure, reusable interface parts, themes, design tokens, animation, and responsive layouts.

In plain words
What is it for?
Use it to start a website, build sections and components, configure a theme, or create responsive layouts and animations.
Why use it?
It gives new websites a defined set of interface tools and conventions instead of requiring those choices for each component.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is import heroImg from '../assets/hero.jpg'.

Good fit Use it to start a website, build sections and components, configure a theme, or create responsive layouts and animations.

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/joaoguirunas/team-os
agentmods
npx agentmods add skills/joaoguirunas/team-os/sites-frontend-stack

Made for: Claude Code.

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 sites-frontend-stack

README.md
[![agentmods](https://agentmods.dev/badge/skills/joaoguirunas/team-os/sites-frontend-stack/github.svg)](https://agentmods.dev/skills/joaoguirunas/team-os/sites-frontend-stack)
Your own site
<a href="https://agentmods.dev/skills/joaoguirunas/team-os/sites-frontend-stack"><img src="https://agentmods.dev/badge/skills/joaoguirunas/team-os/sites-frontend-stack/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 sites-frontend-stack

Your own site · 80×15
<a href="https://agentmods.dev/skills/joaoguirunas/team-os/sites-frontend-stack"><img src="https://agentmods.dev/badge/skills/joaoguirunas/team-os/sites-frontend-stack.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,146 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00064 $0.04146
Opus 5.5 $0.00026 $0.01658
Sonnet 5.5 $0.00013 $0.00829
Haiku 4.5 $0.00006 $0.00415

Measured 1mo ago against content hash 5bcc816c2154, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sites-frontend-stack 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.

.claude/skills/sites-frontend-stack/SKILL.md · 394 lines

How it starts

The opening of the file, as written. The whole thing — 394 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sites Frontend Stack — Next.js e Astro + Tailwind v4 + shadcn/ui

Stack padrão das duas trilhas suportadas pela squad sites, estrutura de projeto, tokens de design (definidos UMA vez, compartilhados), padrões de componente em cada stack e composição shadcn/ui.

1. Escolha de stack

A decisão entre Next.js, Astro ou Híbrido é responsabilidade exclusiva do sites-architect (workflow "Escolher stack — Next.js / Astro / Híbrido", registrado como ADR em docs/smart-memory/decisions/ADR-{N}-stack-choice.md). Esta skill não repete os critérios de decisão — ela cobre a implementação de cada stack já decidida. Resumo de quando cada uma costuma entrar:

  • Next.js — área autenticada complexa, painel com muito estado no cliente, infraestrutura de API pesada (webhooks, filas, jobs).
  • Astro — site majoritariamente de conteúdo (institucional, landing page, blog, documentação, portfólio) com SEO/Core Web Vitals como prioridade dura.
  • Híbrido (de ilha — um projeto Astro com ilhas React pontuais — ou separado — dois deploys, conteúdo em Astro e app autenticado em Next.js) — quando o projeto tem as duas necessidades ao mesmo tempo.

Ver o corpo do sites-architect para a tabela completa de critérios e o formato do ADR antes de escolher a stack de um projeto novo.

2. Stack Next.js

Next.js (App Router) + TypeScript
Tailwind CSS v4 (@theme CSS-first)
shadcn/ui (componentes base)
Motion — pacote `motion`, import de `motion/react` (ex-Framer Motion)
Lucide React (ícones)
next/font (tipografia)

Estrutura de projeto (Next.js)

src/
├── app/
│   ├── layout.tsx        # Root layout
│   ├── page.tsx          # Home
│   ├── globals.css       # Tailwind + @theme (tokens)
│   └── [route]/
│       └── page.tsx
├── components/
│   ├── ui/               # shadcn components (nunca editar direto)
│   ├── sections/         # Seções de página (Hero, Features, CTA)
│   └── layout/           # Header, Footer
└── lib/
    └── utils.ts          # cn() e utilities

Read the full file on GitHub · 394 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. 1mo ago Changed 5bcc816c2154
  2. 1mo ago Changed · +200 lines · +3 tokens per session 88a067075200
  3. 2mo ago First seen · 194 lines · 61 tokens per session scan A 1647a18a424c

Subscribe to this mod's changes

sites-frontend-stack is a skill published in the GitHub repository joaoguirunas/team-os (6 stars, last pushed 4d ago), licensed MIT. It adds 64 tokens to every session and 4,146 once invoked, about $0.0003 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 2026-09-05.

Related

sites-frontend-stack compared with skills from other repositories

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