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End-to-end typesafe APIs made easy

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Alex / KATT and Prisma's Mahmoud Abdelwahab doing a deep dive into tRPC.


tRPC allows you to easily build & consume fully typesafe APIs, without schemas or code generation.

As TypeScript and static typing increasingly becomes a best practice in web programming, the API presents a major pain point. We need better ways to statically type our API endpoints and share those types between our client and server (or server-to-server).

An alternative to traditional REST or GraphQL

Currently GraphQL is the dominant way to implement typesafe APIs in TypeScript (and it's amazing!). Since GraphQL is designed as a language-agnostic specification for implementing APIs, it doesn't take full advantage of the power of a language like TypeScript - further reading.

If your project is built with full-stack TypeScript, you can share types directly between your client and server, without relying on code generation.

Introducing tRPC

We set out to build a simple library for building typesafe APIs that leverages the full power of modern TypeScript. Introducing tRPC! Featuring:

  • ๐Ÿง™โ€โ™‚๏ธย  Full static typesafety & autocompletion on the client - on request inputs, outputs, & errors.
  • ๐ŸŽย  Snappy DX. No code generation, runtime bloat, or build pipeline.
  • ๐Ÿƒย  Light. tRPC has zero deps and a tiny client-side footprint.
  • ๐Ÿปย  Easy to add to your existing brownfield project.
  • ๐Ÿ”‹ย  Batteries included. React-library + Next.js/Express adapters. (But tRPC is not tied to React - reach out if you want to make a Svelte/Vue/... lib)
  • ๐Ÿฅƒย  Simple to use APIs for queries, mutations, & subscriptions support.
  • โšก๏ธย  Request batching - requests made at the same time can be automatically combined

... and

  • ๐Ÿ‘€ย  Quite a few Example Apps that you can use for reference or as a starting point.
  • โœ…ย  Well-tested & running in production.