# Introduction

> Always-on Linux desktops for AI agents. What a screen is and the three ways to drive one.

Kubi gives your AI agent its own Linux desktop that stays on. We call it a **screen**. Your agent looks at it, clicks and types like a person, runs commands and moves files. Your files, logins and open apps are still there tomorrow. A person can watch live and take over at any time.

## Three ways in

| You use | Start here | Good for |
|---|---|---|
| An agent app (Claude Code, Codex, Cursor, claude.ai) | [Connect your agent](/connect-your-agent) | Giving the agent you already use a desktop, in two minutes |
| Your own code | [Quickstart](/quickstart) with the TypeScript SDK | Agents you build and run yourself |
| Any language | [API reference](/api) | Plain HTTP and JSON, `curl` works |

All three run on the same API, so anything one can do, the others can too.

## What an agent can do on a screen

- **Look.** Take a screenshot and get the image back with an id. [Screenshots](/concepts/look-and-act)
- **Act.** Click, type, press keys, scroll, drag. Each action can return the screen after it, so one call is one step. [Actions](/concepts/look-and-act)
- **Run commands.** Short ones answer inline, long ones return an id to check later. [Commands and files](/guides/commands-and-files)
- **Move files.** Upload, download, list folders.
- **Share it.** You can watch live or take control at any time, and your agent's calls are refused until you're done. [People and agents](/concepts/people-and-agents)
- **Look back.** Every call is kept with the screenshot it returned for 30 days. [Billing and history](/concepts/billing-and-history)

## How a screen works

Each screen is a full Linux desktop (Debian 13 in Ubuntu's look) in its own virtual machine, with browsers and the usual tools. It runs until you stop it. A persistent screen is billed monthly, running or stopped; a disposable one is paid from credit for the time it runs and can end on its own. Save any screen as a template to start new ones from. [Screens](/concepts/screens)

:::tip
Agents that read docs: everything here is also at [/llms.txt](/llms.txt), and every page has a Markdown copy at the same address plus `.md`.
:::