A backend for apps built with Claude Code and Codex

Claude Code and Codex write and run code on your machine. Turn Zero Cloud is where the application they build runs: a server with its database, file storage, sign-in, scheduled jobs, AI calls, and push notifications, created and deployed by the agent through one MCP connection.

Connect in one command

Add the connection to the agent you use, then say what you want built. The agent reads the platform's documentation through the connection, so you do not have to.

The setup guide covers both agents, and other MCP clients connect the same way.

What the agent can do once connected

• Create the application and choose its plan, free to start.
• Use the application's PostgreSQL database and file storage, created with it.
• Add sign-in for the application's users, with passkeys and open or invitation-only sign-up.
• Schedule jobs, call AI models, and send push notifications to iPhone and Android.
• Store the application's keys by name, each typed into your own terminal and never into the chat.
• Deploy a version to production at its own address, roll it back, and promote from a development environment when you add one.
• Read the logs, the counters, and each step of a deploy, and fix what they show.

How a session goes

You describe the application. The agent builds it on your machine, with the platform's library packages for the database, sign-in, and the rest, and runs its tests offline before anything is deployed. You ask for a deploy; the agent creates the application, stores the keys it needs, and deploys. A few minutes later it reports the address, requests the routes, and reads the logs. When something is wrong, it reads the logs again, fixes the code, and deploys the next version. The example session on the home page shows the exchange, shortened.

What stays in your hands

Keys are typed into your terminal, never pasted into the conversation. Each application has its own plan and its own container, the first one free, and you can export its data or delete it. Sign-up for the application's users can be open or by invitation. The dashboard shows every application and its usage, but shipping never depends on it.

Read next

• Deploy an application, the documentation's first walk-through
• A production backend for vibe-coded apps
• How Turn Zero Cloud compares with Supabase and Vercel