Borrowing it
Nothing to install: this file belongs to tchinnin/powerplatform-vibecoding-samples. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/tchinnin/powerplatform-vibecoding-samples/main/.github/instructions/React-SPA.instructions.mdgit clone --depth 1 https://github.com/tchinnin/powerplatform-vibecoding-samplesWrote 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/tchinnin/powerplatform-vibecoding-samples/react-spa)<a href="https://agentmods.dev/instructions/tchinnin/powerplatform-vibecoding-samples/react-spa"><img src="https://agentmods.dev/badge/instructions/tchinnin/powerplatform-vibecoding-samples/react-spa/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/instructions/tchinnin/powerplatform-vibecoding-samples/react-spa"><img src="https://agentmods.dev/badge/instructions/tchinnin/powerplatform-vibecoding-samples/react-spa.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 | $0.05023 | $0.05023 |
| Opus 5.5 | $0.02009 | $0.02009 |
| Sonnet 5.5 | $0.01005 | $0.01005 |
| Haiku 4.5 | $0.00502 | $0.00502 |
Grade A, and why
React-SPA 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 2mo 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 — 701 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Fluent UI 9 + React SPA Development Guidelines
This document outlines the standard practices and conventions for React-based development projects using Fluent UI 9 and modern React patterns.
1. Folder Structure
Maintain a clear and consistent folder structure across all projects:
src/
├── README.md # Global React project documentation
├── assets/ # Static assets (images, fonts, icons)
├── components/ # Reusable UI components
│ ├── ComponentName/
│ │ ├── ComponentName.tsx
│ │ ├── ComponentName.style.ts
│ │ ├── ComponentName.type.ts
│ │ └── index.ts # Barrel export
│ ├── ProtectedRoute/ # Route guard component
│ │ ├── ProtectedRoute.tsx
│ │ ├── ProtectedRoute.type.ts
│ │ └── index.ts
│ └── MainLayout/ # Layout wrapper for routes
│ ├── MainLayout.tsx
│ ├── MainLayout.style.ts
│ └── index.ts
├── hooks/ # Custom React hooks
│ ├── useAuth.ts # Authentication hook (for protected routes)
│ ├── useNavigate.ts # Re-export or custom navigation hook
│ ├── useRouteParams.ts # Type-safe route params hook
│ ├── useHookName.ts
│ └── index.ts # Barrel export
├── contexts/ # React Context providers
│ ├── AuthContext.tsx # Authentication context
│ ├── ContextNameContext.tsx
│ └── index.ts # Barrel export
├── pages/ # Page-level components
│ └── PageName/
│ ├── PageName.tsx
│ ├── PageName.style.ts
│ ├── index.ts # Barrel export
│ └── README.md # Page documentation (overview, components used, features)
├── theme/ # Theming configuration
│ └── customTheme.ts
├── routes/ # React Router configuration
│ ├── index.tsx # Main router configuration with createBrowserRouter
│ ├── constants.ts # Route path constants (ROUTES object)
│ └── types.ts # Route parameter types
├── utils/ # Utility functions
├── services/ # API and service integrations
├── models/ # TypeScript type definitions and interfaces
└── mockData/ # Mock data for testing and development
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.
- 2mo ago First seen · 701 lines · 5,023 tokens per session scan A fe4f0452ecc4
React-SPA is an instructions file published in the GitHub repository tchinnin/powerplatform-vibecoding-samples (6 stars, last pushed 9mo ago), licensed MIT. It adds 5,023 tokens to every session, about $0.0201 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 2026-08-31.
React-SPA compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| React-SPAtchinnin/powerplatform-vibecoding-samples | Instructions file | 6 | 9mo ago | MIT | A | 5,023 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
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| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |