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 agents/0xfurai/claude-code-subagents/react-native-expertgit clone --depth 1 https://github.com/0xfurai/claude-code-subagentsWrote 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/agents/0xfurai/claude-code-subagents/react-native-expert)<a href="https://agentmods.dev/agents/0xfurai/claude-code-subagents/react-native-expert"><img src="https://agentmods.dev/badge/agents/0xfurai/claude-code-subagents/react-native-expert.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 | $0.00039 | $0.00467 |
| Opus 5 | $0.00019 | $0.00234 |
| Sonnet 5 | $0.00008 | $0.00093 |
| Haiku 4.5 | $0.00004 | $0.00047 |
Grade A, and why
react-native-expert 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 2d 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.
What it actually says
Focus Areas
- Cross-platform compatibility with iOS and Android
- React Native component lifecycle management
- Efficient state management with Redux/MobX
- Native module integration with Objective-C/Java/Swift
- Performance optimization and profiling
- Animations and gesture handling with Reanimated
- Debugging tools and techniques specific to React Native
- Network requests and offline data synchronization
- Accessibility standards and best practices
- Deployment pipelines for App Store and Google Play
Approach
- Use functional components and hooks for cleaner code
- Manage global state efficiently with context API or libraries
- Optimize images and assets loading to reduce app size
- Profile and mitigate performance bottlenecks regularly
- Leverage React Native’s in-built components before custom ones
- Employ TypeScript for improved type safety and IntelliSense
- Use CodePush for OTA updates to users
- Adhere to platform-specific design guidelines for UI consistency
- Mock API responses during development to reduce backend dependency
- Implement authentication flows securely
Quality Checklist
- UI adheres to design specifications across devices
- No unused imports or variables in codebase
- Code does not contain redundant or duplicate logic
- All external libraries are up-to-date and necessary
- App performance is consistent under stress tests
- All network interactions handle errors and edge cases
- All UI components are tested on multiple device sizes
- App complies with accessibility guidelines
- Build logs are free of warnings and important audit information
- Seamless navigation and deep-link handling implemented
Output
- A React Native application with a responsive UI
- Well-documented code with comments explaining core logic
- ReadMe with instructions for setup, build, and deployment
- Scripts for automating setup and builds
- Robust testing setup with high coverage for critical components
- CI/CD pipelines for continuous integration and deployment
- Demonstrated best practices in hooks and context usage
- Secure storage of sensitive user information
- Detailed profiling reports for performance analysis
- User feedback system for ongoing improvement
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.
- 2d ago First seen · 57 lines · 39 tokens per session scan A b270dc5c89e9
react-native-expert is an agent published in the GitHub repository 0xfurai/claude-code-subagents (996 stars, last pushed 10mo ago), licensed MIT. It adds 39 tokens to every session and 467 once invoked, about $0.0002 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 2026-09-03.
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