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 agentmods add instructions/barrosohub/frontend-stack-blueprint/claude-mdgit clone --depth 1 https://github.com/barrosohub/frontend-stack-blueprintWrote 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/instructions/barrosohub/frontend-stack-blueprint/claude-md)<a href="https://agentmods.dev/instructions/barrosohub/frontend-stack-blueprint/claude-md"><img src="https://agentmods.dev/badge/instructions/barrosohub/frontend-stack-blueprint/claude-md.svg" alt="Measured on agentmods" 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 | $0.02067 | $0.02067 |
| Opus 5 | $0.01033 | $0.01033 |
| Sonnet 5 | $0.00413 | $0.00413 |
| Haiku 4.5 | $0.00207 | $0.00207 |
Grade A, and why
frontend-stack-blueprint CLAUDE.md 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend Stack Blueprint v2.0.0
This repository defines the canonical frontend stack for any new frontend project. It is platform-agnostic — the same stack applies whether the project targets browser, desktop, or anything else.
The Stack (use for EVERY project)
- Language: TypeScript ≥7 (strict mode, no
any) - UI: React ≥19.2.7 (function product components; class Error Boundaries allowed)
- Routing: TanStack Router ≥1 (default) or React Router ≥8
- Tooling: pnpm ≥11.18, Node.js 24 LTS (minimum 22.22), Bun ≥1 (alternative runtime)
- Build: Vite ≥8
- Test: Vitest ≥4; Playwright ≥1.61 for user-facing deployed applications
- Quality: protected CI merge gate + Husky + lint-staged + ESLint + Prettier
- Components: Base UI default; Radix UI/React Aria alternatives; Floating UI, Embla Carousel, cmdk
- Pre-styled UI: shadcn/ui with an explicit primitive base
- Styling: Tailwind CSS ≥4 + clsx + tailwind-merge (no CSS-in-JS ever)
- Animations: Motion (formerly Framer Motion) —
import from 'motion/react' - DESIGN.md Design Contract (provisional, optional): root
DESIGN.mdfor product visual intent and source tokens - Forms: React Hook Form + Zod
- Data Access (optional): Prisma ≥7
- Authentication (optional): Better Auth ≥1
- Managed Services (optional): Neon Postgres, Cloudflare D1, Cloudflare R2, Cloudflare KV, Resend
- Dates: date-fns ≥4.1 (+@date-fns/tz for timezones)
- State: Zustand (no Redux, MobX) — TanStack Store remains under evaluation
- Server State: TanStack Query ≥5.60.60
- Rich Text: Lexical (primary), ProseMirror (fallback only)
- Syntax: Shiki
- Advanced Capabilities (optional): secure Markdown, TanStack Table, Recharts, Mermaid, CodeMirror, xterm.js/node-pty, Yjs, PDF.js
- i18n: Format.js + react-intl
- Observability: Sentry, OpenTelemetry, and Statsig only when their operational capability applies
- Icons: Lucide (default), Phosphor or Tabler as alternatives
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.
- 5d ago First seen · 172 lines · 2,067 tokens per session scan A e49103fef80f
frontend-stack-blueprint CLAUDE.md is an instructions file published in the GitHub repository barrosohub/frontend-stack-blueprint (3 stars, last pushed 1mo ago), licensed MIT. It adds 2,067 tokens to every session, about $0.0103 per session on Opus 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 2026-08-31.
Other instructions, from other repositories
own-planner frontend.instructions.md
Instructions for am-space/own-planner, covering frontend instructions, technology, coding rules and change preferences.
Kokoro-Engine CLAUDE.md
Claude Code instructions for chyinan/Kokoro-Engine, covering claude.md, git 规范, 项目概述, 常用命令 and 安装依赖.
Little-Claude CLAUDE.md
Instructions for qingyu321/Little-Claude, covering claude.md, project overview, development commands, install dependencies and frontend only (vite dev server).
thunderbolt AGENTS.md
AGENTS.md instructions for thunderbird/thunderbolt, covering core principles, typescript & code style, tooling & libraries, react patterns and useeffect discipline.
copilot-instructions
This file describes the coding style and guidelines for the project, which will be used by GitHub Copilot to generate code suggestions that align with the project's standards.
react-seed AGENTS.md
Instructions for guokaigdg/react-seed, covering agents.md, 目录, 1. 项目概览, 2. 技术栈 and 3. 目录结构.