Host4.ai

A persistent cloud home for your AI coding agent.

Host4.ai runs Claude Code and Codex on a full Ubuntu environment in the cloud, so your agent keeps building and shipping even when your laptop is closed. Describe an idea in plain English, and the agent builds and deploys it - with SSH, a browser terminal, and instant subdomains out of the box.

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What you get#

Always on#

Your environment runs 24/7 on a cloud server. Long builds, background agents, and scheduled jobs keep running after you close the browser.

Agents preinstalled#

Claude Code and Codex are ready out of the box. Install Aider, the ChatGPT CLI, or any custom tooling you rely on - the box is yours.

Full root Ubuntu#

You get full root access to a real, isolated Ubuntu environment with its own filesystem and network. Install packages, run services, do whatever Linux lets you do.

Ship instantly#

Projects go live immediately on a .host4.ai subdomain. Point a custom domain at it whenever you like - SSL is provisioned automatically.

You own everything#

100% of the code is yours, exportable any time over git or SSH. No lock-in, ever.

Ready to build? Spin up an environment.