api-routes

Design Expo Router API routes with EAS Hosting deployment.

Updated Jan 17, 2026
One-click install
npx skills add https://github.com/mattppal/matty-stack --skill api-routes-mattppal
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: api-routes
Source: https://github.com/mattppal/matty-stack/tree/main/.claude/skills/api-routes
Command: npx skills add https://github.com/mattppal/matty-stack --skill api-routes-mattppal

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Expo Router API routes are central to server-side logic in Expo apps, and this guide provides standardized patterns and best practices for building, securing, and deploying API endpoints with EAS Hosting.

Core Features & Use Cases

  • Clear file structure guidance for app/api routes, including hello endpoints and dynamic routes.
  • Detailed instructions on HTTP methods, request handling, environment variables, CORS, and error handling.
  • Deployment and hosting guidance for EAS Hosting and Cloudflare Workers, plus testing locally.

Quick Start

Create a new API route under app/api with a +api.ts endpoint and implement a basic GET handler as shown in the examples.

Frequently Asked Questions about api-routes

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I structure Expo Router API routes in my app?

Expo Router API routes use a specific file structure within the app/api directory. You create endpoints using a +api.ts file, which allows you to define basic GET handlers and organize dynamic routes effectively.

How do I secure environment variables and configure CORS for Expo API routes?

Securing Expo API routes involves implementing strict CORS configurations and safely managing environment variables. This ensures that server-side endpoints handle cross-origin requests securely while protecting sensitive backend deployment data.

How do I deploy Expo Router API routes to EAS Hosting?

Deploying Expo Router API routes to EAS Hosting requires following specific deployment workflows designed for serverless environments. This includes configuring endpoints for Cloudflare Workers compatibility and testing locally before pushing to production.

Does EAS Hosting support TypeScript backend endpoints with dynamic routes?

Yes, EAS Hosting fully supports TypeScript backend endpoints with dynamic routes. The platform allows you to implement complex request handling and HTTP methods within your app/api directory while maintaining strict type safety.

What is the best way to handle errors in Expo Router API routes?

The best way to handle errors in Expo Router API routes is by applying standardized error handling patterns within your server-side endpoints. This ensures robust request processing and secure failure responses across your serverless backend.

Can I test Expo Router API routes locally before deploying to EAS Hosting?

Yes, you can test Expo Router API routes locally before deploying to EAS Hosting. The guidelines include workflows for local testing of your server-side endpoints, ensuring HTTP methods and request handling function correctly before production deployment.