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 EngineerWithAI/engineerwith-agents --skill react-native-architecturegit clone --depth 1 https://github.com/EngineerWithAI/engineerwith-agentsWrote 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/engineerwithai/engineerwith-agents/react-native-architecture)<a href="https://agentmods.dev/skills/engineerwithai/engineerwith-agents/react-native-architecture"><img src="https://agentmods.dev/badge/skills/engineerwithai/engineerwith-agents/react-native-architecture.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 5.1 | $0.00043 | $0.04187 |
| Opus 5 | $0.00022 | $0.02093 |
| Sonnet 5 | $0.00009 | $0.00837 |
| Haiku 4.5 | $0.00004 | $0.00419 |
Grade A, and why
react-native-architecture 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 4d 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
89% identical to react-native-architecture — 591 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 — 672 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Native Architecture
Production-ready patterns for React Native development with Expo, including navigation, state management, native modules, and offline-first architecture.
When to Use This Skill
- Starting a new React Native or Expo project
- Implementing complex navigation patterns
- Integrating native modules and platform APIs
- Building offline-first mobile applications
- Optimizing React Native performance
- Setting up CI/CD for mobile releases
Core Concepts
1. Project Structure
src/
├── app/ # Expo Router screens
│ ├── (auth)/ # Auth group
│ ├── (tabs)/ # Tab navigation
│ └── _layout.tsx # Root layout
├── components/
│ ├── ui/ # Reusable UI components
│ └── features/ # Feature-specific components
├── hooks/ # Custom hooks
├── services/ # API and native services
├── stores/ # State management
├── utils/ # Utilities
└── types/ # TypeScript types
2. Expo vs Bare React Native
| Feature | Expo | Bare RN |
|---|---|---|
| Setup complexity | Low | High |
| Native modules | EAS Build | Manual linking |
| OTA updates | Built-in | Manual setup |
| Build service | EAS | Custom CI |
| Custom native code | Config plugins | Direct access |
Quick Start
# Create new Expo project
npx create-expo-app@latest my-app -t expo-template-blank-typescript
# Install essential dependencies
npx expo install expo-router expo-status-bar react-native-safe-area-context
npx expo install @react-native-async-storage/async-storage
npx expo install expo-secure-store expo-haptics
// app/_layout.tsx
import { Stack } from 'expo-router'
import { ThemeProvider } from '@/providers/ThemeProvider'
import { QueryProvider } from '@/providers/QueryProvider'
export default function RootLayout() {
return (
<QueryProvider>
<ThemeProvider>
<Stack screenOptions={{ headerShown: false }}>
<Stack.Screen name="(tabs)" />
<Stack.Screen name="(auth)" />
<Stack.Screen name="modal" options={{ presentation: 'modal' }} />
</Stack>
</ThemeProvider>
</QueryProvider>
)
}
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.
- 4d ago First seen · 672 lines · 43 tokens per session scan A 28df2ca73ff9
react-native-architecture is a skill published in the GitHub repository EngineerWithAI/engineerwith-agents (4 stars, last pushed 8mo ago), licensed MIT. It adds 43 tokens to every session and 4,187 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to react-native-architecture, differing in 591 lines, and is treated as a copy.
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