--- name: native-data-fetching description: Use when implementing or debugging ANY network request, API call, or data fetching. Covers fetch API, React Query, SWR, error handling, caching, offline support, and Expo Router data loaders (`useLoaderData`). risk: critical source: https://github.com/expo/skills/tree/main/plugins/expo/skills/native-data-fetching source_repo: expo/skills source_type: official date_added: 2026-07-01 license: MIT license_source: https://github.com/expo/skills/blob/main/LICENSE --- # Expo Networking **You MUST use this skill for ANY networking work including API requests, data fetching, caching, or network debugging.** ## Detailed Guide Read [the detailed guide](references/detailed-guide.md) before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely. ## When to Use Use this skill when: - Implementing API requests - Setting up data fetching (React Query, SWR) - Using Expo Router data loaders (`useLoaderData`, web SDK 55+) - Debugging network failures - Implementing caching strategies - Handling offline scenarios - Authentication/token management - Configuring API URLs and environment variables ## Example Invocations User: "How do I make API calls in React Native?" -> Use fetch, wrap with error handling User: "Should I use React Query or SWR?" -> React Query for complex apps, SWR for simpler needs User: "My app needs to work offline" -> Use NetInfo for status, React Query persistence for caching User: "How do I handle authentication tokens?" -> Store in expo-secure-store, implement refresh flow User: "API calls are slow" -> Check caching strategy, use React Query staleTime User: "How do I configure different API URLs for dev and prod?" -> Use EXPO*PUBLIC* env vars with .env.development and .env.production files User: "Where should I put my API key?" -> Client-safe keys: EXPO*PUBLIC* in .env. Secret keys: non-prefixed env vars in API routes only User: "How do I load data for a page in Expo Router?" -> See references/expo-router-loaders.md for route-level loaders (web, SDK 55+). For native, use React Query or fetch. ## Limitations - Use this skill only when the task clearly matches its upstream product or API scope. - Verify commands, API behavior, pricing, quotas, credentials, and deployment effects against current official documentation before making changes. - Do not treat generated examples as a substitute for environment-specific tests, security review, or user approval for destructive or costly actions. --- Source attribution: expo/skills contributors, via Agentic Awesome Skills Original project: https://github.com/expo/skills License: MIT + CC-BY-4.0 License information: https://creativecommons.org/licenses/by/4.0/ Original upstream instructions; downloaded from Mega AI Hub. ## Upstream license notice The MIT License (MIT) Copyright (c) 2025-present 650 Industries, Inc. (aka Expo) Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # Mega AI Hub resource metadata Creator / publisher: expo/skills contributors, via Agentic Awesome Skills Original project: https://github.com/expo/skills Attribution basis: Recorded upstream repository Fields of work: Development & Engineering Roles: Mobile Developer Specialties: Specialty not specified Tools: Tool not specified Country applicability: Country not specified Classification basis: Dave AI task classification from package title, description, and declared metadata Instruction SHA-256: bedae975b03096b278684b8a39b6d002a72ad29ddcd5cbbf68f748e762644db7 Metadata reviewed: 2026-10-27 This metadata supersedes earlier Mega AI Hub catalog attribution. Original instruction and supporting files are preserved.