Trpc Type Safety

This is a comprehensive reference for building type-safe APIs with tRPC, covering everything from basic router setup to production patterns. The skill walks through the core value proposition: you define your API once on the server with Zod validation, export the router type, and your React client gets full autocomplete and type checking without any codegen step. It includes practical sections on React Query integration, Next.js App Router setup, middleware for auth, error handling, and even real-time subscriptions. The progressive disclosure structure means you can jump straight to file uploads or testing strategies without wading through basics. Best for full-stack TypeScript projects where you control both ends of the wire, not for public APIs or polyglot services.