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Node.js is a JavaScript runtime built on Chrome's V8 engine that allows you to run JavaScript server-side.

Cosmic makes a great Node.js CMS for your Node.js websites and apps.

Before adding any code, make sure to follow the Initial Setup at the start of this section to set up your content in Cosmic. Then take the following steps to add Cosmic-powered content to your Node.js apps:

1. Install Express

You can use the popular Express website framework to get a Node.js Cosmic website up and running quickly. Start by creating a project folder and installing Express and Cosmic.

mkdir cosmic-node-app
cd cosmic-node-app
npm i express cosmicjs

4. Create an index.js file

Find your Bucket slug and API read key in Bucket Settings > API Access after logging in.

// index.js
const express = require("express");
const app = express();
const Cosmic = require("cosmicjs");
const api = Cosmic();
const PORT = process.env.PORT || 3000;
// Set these values, found in Bucket > Settings after logging in at
const bucket = api.bucket({
app.get("*", async (req, res) => {
const data = await bucket.objects
type: "posts",
.props("slug,title,content,metadata"); // Limit the API response data by props
const posts = data.objects;
let markup = ``; => {
markup += `<div style="margin-bottom: 20px">
<div><img alt="" src="${post.metadata.hero.imgix_url}?w=400"/></div>
res.set("Content-Type", "text/html");
app.listen(PORT, () => {
console.log("Your Cosmic app is running at http://localhost:" + PORT);

4. Start your app

Start your app, and go to http://localhost:3000. Dance 🎉

node index.js

Next steps

  1. Learn more about Objects.
  2. Learn more about Queries.
  3. Learn more about Metafields.

More resources

  1. Install pre-built Nodes.js templates.
  2. Read Nodes.js + Cosmic articles.