adapter-fastify

What problem does it solve?

Manually wiring tRPC into a Fastify server requires configuring the plugin, handling batch request limits, enabling WebSocket subscriptions, and ensuring type‑safe error handling, which can be error‑prone and time‑consuming.

Core Features & Use Cases

• Provides a Fastify plugin that mounts a tRPC router at a configurable prefix.
• Supports WebSocket subscriptions via @fastify/websocket for real‑time features.
• Allows batch request size control with maxParamLength and maxBatchSize settings.
• Ensures type‑safe onError handling using TypeScript's satisfies operator.
• Ideal for building Node.js backend services that need a performant, type‑safe RPC layer.

Quick Start

Use the adapter-fastify skill to mount your tRPC router on a Fastify server at the /trpc endpoint.