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Cloudflare Workers documentation

Cloudflare Workers provides a serverless execution environment that allows you to create entirely new applications or augment existing ones without configuring or maintaining infrastructure.

Get startedView the tutorials

Installing the Workers CLI

To install wrangler, the Workers CLI, ensure you have npm installed, preferably using a Node version manager like nvm. Then, run:

$ npm install -g @cloudflare/wrangler

Read more about installing wrangler.


View this Hello World example in the Workers playground:

addEventListener("fetch", event => {  event.respondWith(handleRequest(event.request))})
async function handleRequest(request) {  return new Response("Hello world")}

Launch playgroundLearn more

These docs are built with the Cloudflare Docs Engine.