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 roedyrustam/vibes-plug --skill mobile-expo-expertgit clone --depth 1 https://github.com/roedyrustam/vibes-plugWrote 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/roedyrustam/vibes-plug/mobile-expo-expert)<a href="https://agentmods.dev/skills/roedyrustam/vibes-plug/mobile-expo-expert"><img src="https://agentmods.dev/badge/skills/roedyrustam/vibes-plug/mobile-expo-expert/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/skills/roedyrustam/vibes-plug/mobile-expo-expert"><img src="https://agentmods.dev/badge/skills/roedyrustam/vibes-plug/mobile-expo-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Memory Poisoning · line 92 Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.Fix: Protect agent memory and state from modification by untrusted content. Use read-only memory for critical instructions and validate all state changes.
- medium MCP Rug Pull · line 50 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00067 | $0.02063 |
| Opus 5 | $0.00034 | $0.01032 |
| Sonnet 5 | $0.00013 | $0.00413 |
| Haiku 4.5 | $0.00007 | $0.00206 |
Grade A, and why
mobile-expo-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 today.
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 — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mobile Expert — React Native & Expo (SDK 53 / RN 0.79 Edition)
English
Orchestration & Integration
Connects and orchestrates with relevant domain skills like brainstorming, zero-to-prod-orchestrator, and project-context-mapper to ensure cohesive execution.
Description
Expert guide for building production-grade cross-platform mobile applications using React Native 0.79+ and Expo SDK 53+. Covers the New Architecture (stable), Expo Router v4, OTA updates, native modules, and modern state management patterns for iOS and Android.
Trigger Conditions
- Building a new iOS/Android cross-platform mobile app.
- Using Expo SDK 53+ or React Native 0.79+ with the New Architecture.
- Implementing file-based routing with Expo Router v4.
- Setting up OTA (Over-the-Air) updates with EAS Update.
- Writing native modules using JSI (JavaScript Interface) or Expo Modules API.
- Integrating device features: camera, biometrics, notifications, location.
What's New in 2026
React Native 0.79 — New Architecture Stable
The New Architecture (Fabric + JSI + TurboModules) is now fully stable and the default for all new Expo SDK 53 projects:
- Fabric: New rendering engine — synchronous rendering, better animations.
- JSI (JavaScript Interface): Direct C++ bridge — no more async serialization for native calls.
- TurboModules: Lazy-loaded native modules — significantly faster startup time.
- Concurrent React: Full support for
useTransition,useDeferredValue, and Suspense on mobile.
Expo SDK 53 — Key Updates
- Expo Router v4: File-based routing with typed routes, API routes (Expo functions), and universal links.
- Expo Camera v15: Unified camera API for iOS and Android.
- Expo SQLite v15: Full SQLite with WAL mode and
useSQLiteContexthook. - Expo Modules API v2: Easier native module authoring with Swift/Kotlin.
- EAS Build: Faster builds with M-series Mac runners.
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.
- today Changed b9485bec19b5
- 8d ago First seen · 193 lines · 67 tokens per session scan A 8062d8938424
mobile-expo-expert is a skill published in the GitHub repository roedyrustam/vibes-plug (53 stars, last pushed today), licensed MIT. It adds 67 tokens to every session and 2,063 once invoked, about $0.0003 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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