End-to-end type safety from database to UI — without code generation.
tRPC gives Next.js applications type-safe API calls without REST endpoints or GraphQL schemas. Define procedures on the server; call them on the client with full TypeScript types. We build tRPC applications for teams that want the type safety of GraphQL without the overhead.
Next.js application with type-unsafe API calls — `fetch('/api/users')` that returns `any` — and no way to know when backend changes break the frontend
The most common type safety gap in Next.js applications is the API boundary. TypeScript gives you type safety within the frontend and within the backend, but the boundary between them — the HTTP request and response — is untyped by default.
The consequence: when a backend developer changes an API response shape, the frontend doesn't know about it. TypeScript can't catch it. The bug surfaces at runtime, in production, when a user encounters the broken UI.
The solutions:
OpenAPI + code generation. Define an OpenAPI spec, generate TypeScript types from it. Adds the overhead of keeping the spec in sync with the implementation.
GraphQL. Type-safe by design. Significant setup and runtime overhead.
tRPC. No schema file, no code generation. Define router procedures in TypeScript; call them from the client with inferred types. The types flow directly from the server implementation to the client call. If a procedure's return type changes, the TypeScript compiler catches every client-side usage that's now broken.
tRPC is the right choice for Next.js monorepos or Next.js applications where the frontend and backend are in the same codebase. It's not the right choice for public APIs consumed by third-party clients (use REST or GraphQL for that).
tRPC API with end-to-end type safety, Zod input validation, and the router structure that scales with the application's complexity
Router architecture
Root router with sub-routers per domain (users, products, orders). Procedure definitions with input validation via Zod and TypeScript return types.
Middleware
Authentication middleware using Clerk's `auth()`. Context creation with user and database access. Protected procedures that require auth.
React Query integration
`@trpc/react-query` for client-side queries and mutations. Optimistic updates for mutations. Query invalidation on data changes.
Server Actions integration
tRPC Server Actions for form submissions (Next.js 14+). Type-safe form handling with server-side validation.
Subscriptions
tRPC WebSocket subscriptions for real-time features (alternative to Pusher for self-hosted WebSocket needs).
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
tRPC API with end-to-end type safety, Zod input validation, and the router structure that scales with the application's complexity
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
tRPC implementation scope is defined by the router structure and the data access requirements. Fixed price.
Related engagements.
GraphQL is the right choice for complex APIs with multiple clients. It's also frequently the wrong choice.
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Read moreQuestions, answered.
Server Actions for: form submissions, mutations triggered by user interaction in the UI. tRPC for: complex data fetching with caching (via React Query), applications that need a structured API layer, or cases where the same logic is called from both RSC and client components.
tRPC is designed for TypeScript-to-TypeScript communication in the same monorepo or codebase. External API consumers (mobile apps built in Swift/Kotlin, third-party integrations) can't use tRPC's type inference. Use REST or GraphQL for external consumers.
Part of the application build. Full application from $25k. Fixed-price.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.