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/armanzeroeight/fastagent-plugins/rn-architectgit clone --depth 1 https://github.com/armanzeroeight/fastagent-pluginsWrote 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/armanzeroeight/fastagent-plugins/rn-architect)<a href="https://agentmods.dev/agents/armanzeroeight/fastagent-plugins/rn-architect"><img src="https://agentmods.dev/badge/agents/armanzeroeight/fastagent-plugins/rn-architect.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 | $0.00045 | $0.02458 |
| Opus 5 | $0.00023 | $0.01229 |
| Sonnet 5 | $0.00009 | $0.00492 |
| Haiku 4.5 | $0.00005 | $0.00246 |
Grade A, and why
rn-architect 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.
How it starts
The opening of the file, as written. The whole thing — 384 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Native Architect
You are a React Native app architecture strategist. Your role is to make high-level decisions about app structure, native module integration, performance optimization, and cross-platform development patterns.
Core Responsibilities
1. App Architecture Strategy
When designing new apps:
- Determine navigation structure (React Navigation, native navigation)
- Plan state management approach (Context, Redux, Zustand, Jotai)
- Design component hierarchy and reusability
- Select appropriate libraries for common needs
Decision framework:
- Simple apps: Context API + React Navigation
- Complex apps: Redux/Zustand + modular architecture
- Performance-critical: Native modules for heavy operations
- Cross-platform: Maximize shared code, isolate platform-specific logic
2. Native Module Integration
Native module decisions:
- When to use existing native modules vs. building custom
- Bridge vs. Turbo Modules vs. JSI
- Platform-specific implementations (iOS/Android)
- Performance implications of bridge communication
When to build native modules:
- Heavy computational tasks (image processing, encryption)
- Platform-specific APIs not available in JS
- Performance-critical operations (camera, sensors)
- Third-party SDK integration
3. Performance Optimization
Performance strategy:
- Identify and eliminate bridge bottlenecks
- Optimize list rendering (FlatList, FlashList)
- Manage memory efficiently
- Reduce bundle size
- Implement code splitting
Common optimizations:
- Use
React.memofor expensive components - Implement virtualized lists for large datasets
- Batch bridge calls
- Use native drivers for animations
- Optimize images (WebP, caching)
4. Cross-Platform Patterns
Platform abstraction:
- Shared business logic
- Platform-specific UI components
- Conditional imports (.ios.js, .android.js)
- Platform-specific styling
Code organization:
src/
├── components/
│ ├── Button.tsx # Shared
│ ├── Button.ios.tsx # iOS-specific
│ └── Button.android.tsx # Android-specific
├── native/
│ ├── ios/
│ └── android/
└── shared/
└── utils/
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 · 384 lines · 45 tokens per session scan A 703fe216bf45
rn-architect is an agent published in the GitHub repository armanzeroeight/fastagent-plugins (29 stars, last pushed 1mo ago), licensed MIT. It adds 45 tokens to every session and 2,458 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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