Integro

Seamless API integration with E2E integrity.

Convert your functions into an API server plus a type-safe client in just 2 lines of code.

Seamless integration

Write functions on the server. Call those functions from the client, types included. Don't waste time designing and maintaining your endpoints.

Go beyond JSON

Integro uses MessagePack internally to send nearly any data type to and from the server, including binary data and JS Dates.

Pub/Sub

With integro, publishing and subscribing to events couldn't be easier. Upgrade to web sockets with 1 additional line of code.

Framework agnostic

Integro supports Node's http/s, Bun.serve, Express, and more. You can also plug it into your existing REST API.

Batching

Call multiple functions with a single HTTP request.

Server-side validation made easy

Works with many popular validation libraries, including Zod, Typia, and Prisma's built-in validation.

Quick example

ServerClient

import { createServer } from 'node:http'
import { createController } from 'integro'

export const app = {
  version: () => '0.5.0',
  greetings: {
    sayHey: (name: string) => `Hey, ${name}!`,
  },
}

createServer(createController(app)).listen()

import { createClient } from 'integro/client'
import type { app } from './app'

export const api = createClient<typeof app>()

console.log(await api.version())
// -> "0.5.0"
console.log(await api.greetings.sayHey('Babe'))
// -> "Hey, Babe!"
console.log(await api.greetings('Babe')) // Error: This expression is not callable.
console.log(await api.greetings.sayHey(666)) // Error: Argument of type 'number' is not assignable to parameter of type 'string'.