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Version: ZIO 2.x


ZIO HTTP is a scala library to write HTTP applications.


ZIO HTTP is a Scala library for building HTTP applications. It is powered by ZIO and netty and aims at being the defacto solution for writing, highly scalable, and performant web applications using idiomatic scala.


In order to use this library, we need to add the following lines in our build.sbt file:

libraryDependencies += "io.d11" %% "zhttp"      % "2.0.0-RC7"
libraryDependencies += "io.d11" %% "zhttp-test" % "2.0.0-RC7" % Test


import zhttp.http._
import zhttp.service.Server
import zio._

object ZHttpExample extends ZIOAppDefault {

// Create HTTP route
val app: HttpApp[Any, Nothing] =
Http.collect[Request] {
case Method.GET -> !! / "text" => Response.text("Hello World!")
case Method.GET -> !! / "json" =>
Response.json("""{"greetings": "Hello World!"}""")

def run =
Server.start(8090, app)


  • ZIO World - ZIO HTTP by Tushar Mathur (March 2020) — At ZIO World Tushar Mathur unveiled a new open-source library 'ZIO HTTP' that gives you better performance than Vert.x, but with pure functional Scala and native ZIO integration.