Medusa v2 Custom API Routes

Before writing code

Fetch live docs:

1. Fetch https://docs.medusajs.com/learn/fundamentals/api-routes for API route overview
2. Web-search site:docs.medusajs.com custom API route file convention for file-based routing
3. Web-search site:docs.medusajs.com API route middleware for middleware configuration
4. Web-search site:docs.medusajs.com API route validation zod for request validation
5. Web-search site:docs.medusajs.com additional data API routes for the additional-data pattern

File-Based Routing

Medusa v2 uses a file-system router under src/api/: