agentmods.dev

react-native-expert

react-native-expert is a skill for Claude Code, Codex from Aarvion-AI/stackwise-skills. It costs 127 tokens per session (2,087 once invoked), scanned A, original, MIT.

A set of coding guidance for building and debugging React Native mobile apps, including apps made with Expo and TypeScript.

In plain words
What is it for?
Use it for screens, navigation, animations, long lists, native iOS or Android code, Expo modules, builds, updates, and testing.
Why use it?
It gives the agent a consistent way to inspect the app, choose a React Native setup, troubleshoot performance, and prepare tests and releases.

Skill for Claude CodeCodex

Part of the stackwise plugin — 14 skills shipped together

not rated 5 yesterday A scan 127 tokens original MIT
View the source file Aarvion-AI/stackwise-skills
Install

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.

agentmods
npx agentmods add skills/aarvion-ai/stackwise-skills/react-native-expert
Any agent
npx skills add Aarvion-AI/stackwise-skills --skill react-native-expert
Clone the repo
git clone --depth 1 https://github.com/Aarvion-AI/stackwise-skills

Made for: Claude Code, Codex.

Or install stackwise, the plugin that ships this one along with the rest of its 14 skills.

Wrote 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.

agentmods badge for react-native-expert

README.md
[![agentmods](https://agentmods.dev/badge/skills/aarvion-ai/stackwise-skills/react-native-expert.svg)](https://agentmods.dev/skills/aarvion-ai/stackwise-skills/react-native-expert)
Your own site
<a href="https://agentmods.dev/skills/aarvion-ai/stackwise-skills/react-native-expert"><img src="https://agentmods.dev/badge/skills/aarvion-ai/stackwise-skills/react-native-expert.svg" alt="Measured on agentmods" height="20"></a>
Per session 127 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,087 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00127 $0.02087
Opus 5 $0.00063 $0.01043
Sonnet 5 $0.00025 $0.00417
Haiku 4.5 $0.00013 $0.00209

Measured 4d ago against content hash 2b1f9bd20b8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 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.

skills/react-native-expert/SKILL.md · 123 lines

How it starts

The opening of the file, as written. The whole thing — 123 lines — stays where its author put it; the contents beside it link to each section on GitHub.

React Native Expert

Turns Claude into a senior React Native engineer who ships Expo-managed, New Architecture apps with TypeScript, tested navigation, 60fps lists, and a working EAS release pipeline.

When to Use This Skill

  • Building screens, layouts, tabs, or modals with Expo Router file-based navigation
  • Deciding between Expo managed workflow, prebuild (CNG), and bare React Native
  • Migrating to or debugging the New Architecture (Fabric renderer, TurboModules, bridgeless mode)
  • Fixing dropped frames in long lists (FlashList) or animations (Reanimated 3 worklets)
  • Writing platform-specific code (iOS/Android/web) without forking the whole component tree
  • Authoring native modules with the Expo Modules API (Swift/Kotlin) or consuming third-party ones
  • Setting up EAS Build, EAS Update, and a Jest + React Native Testing Library + Maestro test stack

Core Workflow

  1. Analyze - read package.json (RN and Expo SDK versions, newArchEnabled is default-on in 0.76+), app.json/app.config.ts (plugins, scheme, runtimeVersion), and the app/ directory to learn the route tree. Check for eas.json, metro.config.js, and an existing test setup before writing anything. Note whether the project is managed, prebuild, or bare - it changes what you are allowed to touch (ios//android/ are generated artifacts under prebuild).
  2. Implement - write TypeScript throughout. Use Expo Router conventions (_layout.tsx, [param].tsx, (group)/) for navigation, typed routes via experiments.typedRoutes. Every interactive element gets accessibilityLabel/accessibilityRole and a stable testID - this is what makes the app automatable by Maestro and QA tooling, not optional polish.
  3. Verify types and lint - run npx tsc --noEmit and npx expo lint; fix all reported issues and re-run until clean before proceeding.
  4. Verify Expo project health - run npx expo-doctor after any dependency, config-plugin, or app.json change; fix all reported issues (usually with npx expo install --fix) and re-run until clean.
  5. Test - run npx jest; write or update Jest + React Native Testing Library tests for the change (query by role/label/testID, never by implementation detail). If any test fails, fix the code or the test and re-run until all pass. For flows that cross screens, add or update a Maestro flow in .maestro/ and run maestro test .maestro/ until it passes.
  6. Prove it works on a device - run npx expo start and exercise the change in a simulator/emulator or dev build (npx expo run:ios / run:android when native code changed). Confirm the actual behavior - navigation lands on the right screen, lists scroll at 60fps with the perf monitor open, both platforms if the change is platform-sensitive. If it misbehaves, fix and re-verify from step 3 until the observed behavior is correct.

Read the full file on GitHub · 123 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 4d ago First seen · 123 lines · 127 tokens per session scan A 2b1f9bd20b8d

Subscribe to this mod's changes

react-native-expert is a skill published in the GitHub repository Aarvion-AI/stackwise-skills (5 stars, last pushed yesterday), licensed MIT. It adds 127 tokens to every session and 2,087 once invoked, about $0.0006 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 2026-08-31.

DebuggingFrontendMobileagent-skillsai-agentsanthropicclaudeclaude-codeclaude-code-plugin
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