jezweb/claude-skills is a collection of skills, commands, plugins, settings, instructions, and hooks that guide the Claude Code CLI through development tasks and produce outputs such as project scaffolds, assets, documents, or deployed services. It is for developers using Claude Code with technologies and services including Cloudflare, React, Tailwind, Shopify, and WordPress. The catalogue entries are the project's own Claude Code workflow components.
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 jezweb/claude-skills --skill react-nativegit clone --depth 1 https://github.com/jezweb/claude-skillsWrote 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/jezweb/claude-skills/react-native)<a href="https://agentmods.dev/skills/jezweb/claude-skills/react-native"><img src="https://agentmods.dev/badge/skills/jezweb/claude-skills/react-native/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/jezweb/claude-skills/react-native"><img src="https://agentmods.dev/badge/skills/jezweb/claude-skills/react-native.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 6 findings, up to medium
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 →
- medium MCP Rug Pull · line 149 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]
- medium MCP Rug Pull · line 150 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]
- medium MCP Rug Pull · line 161 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]
- medium MCP Rug Pull · line 177 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]
- medium MCP Rug Pull · line 180 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]
- medium MCP Rug Pull · line 159 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 | $0.00091 | $0.02346 |
| Opus 5.5 | $0.00036 | $0.00938 |
| Sonnet 5.5 | $0.00018 | $0.00469 |
| Haiku 4.5 | $0.00009 | $0.00235 |
Grade A, and why
react-native 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 1mo 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 — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Native Patterns
Performance and architecture patterns for React Native + Expo apps. Rules ranked by impact — fix CRITICAL before touching MEDIUM.
This is a starting point. The skill will grow as you build more mobile apps.
When to Apply
- Building new React Native or Expo apps
- Optimising list and scroll performance
- Implementing animations
- Reviewing mobile code for performance issues
- Setting up a new Expo project
1. List Performance (CRITICAL)
Lists are the #1 performance issue in React Native. A janky scroll kills the entire app experience.
| Pattern | Problem | Fix |
|---|---|---|
| ScrollView for data | <ScrollView> renders all items at once |
Use <FlatList> or <FlashList> — virtualised, only renders visible items |
| Missing keyExtractor | FlatList without keyExtractor → unnecessary re-renders |
keyExtractor={(item) => item.id} — stable unique key per item |
| Complex renderItem | Expensive component in renderItem re-renders on every scroll | Wrap in React.memo, extract to separate component |
| Inline functions in renderItem | renderItem={({ item }) => <Row onPress={() => nav(item.id)} />} |
Extract handler: const handlePress = useCallback(...) |
| No getItemLayout | FlatList measures every item on scroll (expensive) | Provide getItemLayout for fixed-height items: (data, index) => ({ length: 80, offset: 80 * index, index }) |
| FlashList | FlatList is good, FlashList is better for large lists | @shopify/flash-list — drop-in replacement, recycling architecture |
| Large images in lists | Full-res images decoded on main thread | Use expo-image with placeholder + transition, specify dimensions |
FlatList Checklist
Every FlatList should have:
<FlatList
data={items}
keyExtractor={(item) => item.id}
renderItem={renderItem} // Memoised component
getItemLayout={getItemLayout} // If items are fixed height
initialNumToRender={10} // Don't render 100 items on mount
maxToRenderPerBatch={10} // Batch size for off-screen rendering
windowSize={5} // How many screens to keep in memory
removeClippedSubviews={true} // Unmount off-screen items (Android)
/>
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.
- 1mo ago First seen · 183 lines · 91 tokens per session scan A c32065f601f2
react-native is a skill published in the GitHub repository jezweb/claude-skills (1,072 stars, last pushed 12d ago), licensed MIT. It adds 91 tokens to every session and 2,346 once invoked, about $0.0004 per session on Opus 5.5. 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.
Other skills, from other repositories
react-native-expert
Builds, optimizes, and debugs cross-platform mobile applications with React Native and Expo. Implements navigation hierarchies (tabs, stacks, drawers), configures native modules, optimizes FlatList rendering with memo and useCallback, and handles platform-specific code for iOS and Android. Use when building a React…
react-native-cursor-rules
React Native development best practices for TypeScript, functional components, performance optimization, and styling guidelines.
react-native
Use when building cross-platform mobile apps with React Native or Expo. Covers navigation, platform differences, list performance, native modules, offline behavior, and release builds. Trigger on "flatlist is laggy", "expo or bare react native", "bridge to a native module", "set up ota updates". Do not use for web…
android-security
Harden Android apps against the platform-specific failure modes. Covers Android Keystore and StrongBox, encrypted local storage, network security config and certificate pinning, WebView hardening, exported components and intent hijacking, backup rules, and Play Integrity with root detection as a signal. Invoke when…
ios-security
Harden iOS and macOS apps against the platform-specific failure modes. Covers Keychain accessibility tiers, App Transport Security, certificate pinning tradeoffs, file protection classes, biometric authentication, jailbreak detection as a signal rather than a defense, and third-party SDK review. Invoke when shipping a…
zalo-mini-app
Build Zalo Mini Apps - lightweight React web apps running inside the Zalo super-app. Use for Zalo Mini App setup, zmp-cli/devtools, ZaUI 1.11.x components, zmp-sdk APIs, permissions, token-based phone number flow, user info, storage, local file storage, camera/media, document preview, payment/Checkout, Open APIs…