Building Storefronts

If you're building a Medusa storefront, this teaches you the SDK-first approach that prevents the most common bugs. It hammers home critical patterns like never using regular fetch (causes missing header errors), never JSON.stringify your request bodies (the SDK handles serialization), and that Medusa prices are stored as-is, not in cents. You get React Query patterns for mutations and cache invalidation, plus a clear hierarchy of when to use built-in SDK methods versus sdk.client.fetch for custom routes. The skill works as a checklist before you write code, then points you to detailed reference files for implementation. Load it alongside building-with-medusa when you're connecting frontend features to backend API routes.