DeepSpace SDK

DeepSpace is a full-stack SDK for shipping real-time apps on Cloudflare Workers. One package gives you authentication, SQLite-backed data sync, role-based permissions, presence, collaborative editing, channel-based messaging, file storage, AI chat, scheduled jobs, payments, and deploys to <your-app>.app.space or your own custom domain.

Get started in three commands#

npm create deepspace@latest my-app
cd my-app
npx deepspace dev

The scaffold ships a Vite + React frontend, a Hono worker, file-based routing, Tailwind v4, a shadcn-style UI primitives kit, and six Durable Object classes wired into the SDK. Edit src/ and refresh the browser. When you're ready to ship, run npx deepspace deploy.

Follow the quickstart →

The SDK#

Three entry points cover the surfaces most apps need.

// Frontend (React)
import { RecordProvider, useQuery, useMutations, useAuth } from 'deepspace'

// Worker (Cloudflare Worker)
import { RecordRoom, verifyJwt, CHANNELS_SCHEMA } from 'deepspace/worker'

// Multi-user Playwright fixture (test files only)
import { test, expect } from 'deepspace/testing'

Entry point	What lives here
deepspace	React hooks, providers, auth UI, theming, payments client, integration client
deepspace/worker	Durable Object base classes, schemas, JWT verification, AI helpers, metering
deepspace/testing	Playwright fixture and account helpers for multi-user tests

A single CLI ships in the same package: npx deepspace dev, deploy, add, domain, and more.

What you can build#

DeepSpace is built for apps where state is shared across users. The SDK ships the primitives so you don't write them yourself.

• Multiplayer apps. Live cursors, presence, and per-collection RBAC out of the box.
• Collaborative editors. Yjs-backed text fields and shapes synced over WebSocket.
• Messaging products. Channels, DMs, reactions, and read receipts as drop-in schemas.
• AI applications. Streamed Claude, GPT, or Cerebras with multi-turn tool use over your records.
• SaaS with billing. Subscriptions, one-time products, and refunds via Stripe Checkout.
• Internal tools. Dashboards, trackers, and admin consoles with auth and storage built in.

How this site is organized#

Section	What you'll find
Get started	Introduction, quickstart, installation, and a tour of the scaffolded project.
Core concepts	Architecture, the data model, permissions, real-time sync, and deployment.
Build with DeepSpace	Step-by-step guides for the features you'll use most: auth, data, messaging, collaborative editing, presence, files, AI chat, and payments.
Worker & server	Server actions, scheduled jobs, external APIs, and custom Cloudflare bindings.
Going to production	Custom domains and testing patterns.
SDK reference	Every export from deepspace, deepspace/worker, and deepspace/testing.
CLI reference	Every CLI command, every flag.

Need help?#

• Join the Discord to ask questions and share what you've built.
• Browse the source on GitHub.
• Try the hosted app builder at deep.space.