REST vs GraphQL vs tRPC: Choosing Your API Layer

The API layer is the backbone of every full-stack application, yet the choice between REST, GraphQL, and tRPC is still one of the most debated topics in modern web development. Each has genuine trade-offs — and the right answer depends heavily on your team and product context.

REST remains the right default for public APIs and microservices. Its simplicity, cacheability, and universal tooling support make it battle-tested and easy for external consumers to adopt. If you're building an API that third parties will integrate with, REST is almost always the right call.

GraphQL shines in products with complex, nested data requirements and multiple client types (web, mobile, partner integrations). The ability for clients to specify exactly the data they need eliminates over-fetching and under-fetching — but adds operational overhead in schema management and query complexity.

tRPC, however, has fundamentally changed the game for full-stack TypeScript monorepos. By eliminating the API contract entirely and sharing types between server and client, tRPC gives you the developer experience of a local function call with the isolation of an HTTP API. For internal full-stack apps, it's a productivity multiplier.