Follow the steps below to get started with Cosmic to power content for your Svelte application.

Install a new Svelte app

npm create svelte@latest cosmic-svelte

Answer the prompts with the following answers:

  1. Which Svelte app template? Skeleton project.
  2. Add type checking with TypeScript? Yes.
  3. Select additional options (use arrow keys/space bar) None.

Then go into your codebase and run the following commands.

cd cosmic-svelte
npm install

Install the Cosmic JavaScript SDK

Install the Cosmic JavaScript SDK in the location of the codebase.

npm i @cosmicjs/sdk

Add an Object type in the Cosmic dashboard

Log in to the Cosmic dashboard and create a new Blog Posts Object type in a new or existing Project with the following metafields:

  1. Image: Image type with key image
  2. Content: Rich text with key content

Blog model

Add content

Add a few blog posts to get some content ready to be delivered.

Create a new file at +page.server.js with the following:

// +page.server.js
/** @type {import('./$types').PageServerLoad} */
import { BUCKET_SLUG, BUCKET_READ_KEY } from '$env/static/private';
import { createBucketClient } from '@cosmicjs/sdk';
const cosmic = createBucketClient({
  bucketSlug: BUCKET_SLUG || '',
  readKey: BUCKET_READ_KEY || '',

export async function load() {
  const { objects: posts } = await cosmic.objects
      type: 'blog-posts',
  return { posts };

Then add the following to the +page.svelte file:

// +page.svelte
  /** @type {import('./$types').PageData} */
  export let data;

<h1>Welcome to Cosmic Svelte</h1>
{#each data.posts as post}
  <div>{@html post.metadata.content}</div>

Add your Cosmic API keys

In a new file titled .env.local add the following environment variables and make sure to switch out the values with your Cosmic API keys found in Project / API keys.

# .env.local

Start the app

Start your app with the following command, go to http://localhost:5173, and see your blog posts.

npm run dev