Cloud Storage for AI-Generated Apps
Store files in the cloud with Puter.js. Your AI coding agent can add cloud storage to your app in a few lines: no buckets, no CDN config, no infrastructure.
File System API
Familiar file operations, with a small, consistent syntax that AI coding agents use correctly.
- Write, read, copy, move, rename, delete
- Create directories and list contents
- Upload files from user input
No Infrastructure
No buckets to configure, no CDN to set up, no availability to manage. Just write code and store files.
User-Pays Model
Build apps without worrying about storage or bandwidth costs. With the User-Pays model, users cover their own costs.
No Servers to Provision
Store files directly from the browser with client-side JavaScript. No server code for your AI to write, secure, or maintain.
Works Everywhere
Use from any frontend with a simple script tag, or install via npm for Node.js projects.
How It Works
1 Include Puter.js
Add Puter.js to your app:
<script src="https://js.puter.com/v2/"></script>
or with npm:
npm install @heyputer/puter.js
2 Store Files in the Cloud
Use the simple JavaScript API to store files:
puter.fs.write('hello.txt', 'Hello, world!');
View the Cloud Storage documentation for a full list of available features.
✓That's it!
No buckets to configure, no CDN to set up, no infrastructure to manage. The files are stored in the cloud instantly.
The Storage API
Write files, read files, create directories, and more.
// Write a file
puter.fs.write('hello.txt', 'Hello, world!');
// Read a file
const content = await puter.fs.read('hello.txt');
// Create a directory
await puter.fs.mkdir('my-folder');
// List files in a directory
const files = await puter.fs.readdir('my-folder');
Frequently Asked Questions
Cloud storage keeps your app's files on remote servers so they are available from any device. With Puter.js, you can save, read, and manage files directly from your JavaScript code without setting up servers, configuring buckets, or managing infrastructure.
Puter is a cloud platform that provides storage, AI, and other cloud services through a simple JavaScript API via Puter.js. It handles authentication, infrastructure, and scaling so you can focus on building your app.
With the User-Pays model, users cover their own storage and bandwidth costs through their Puter account. This means you can build apps without worrying about infrastructure expenses.
Add the Puter.js script to your app with <script src="https://js.puter.com/v2/"></script>, then use puter.fs.write() to save files and puter.fs.read() to retrieve them. Check out the documentation for more examples, or point your AI coding agent at llms.txt.
Ship a Full-Stack App with One Prompt
Build a cloud file manager using Puter.js
Coding manually? see the guide
