> ## Documentation index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Search it with GET https://upstash.com/docs/search?q=<query>.
> Use these to discover all available pages before exploring further.

# Upstash Box

> Secure, isolated cloud containers with a built-in AI agent.

Every Upstash Box is a secure, isolated cloud container with an AI agent built in. Each box has its own filesystem, shell, git, network stack, and runtime. You send prompts or commands, the box runs them, and you get structured results back.

## Start here

- [Quickstart](/box/overall/quickstart): get an API key, install the SDK, create a box, and run your first task.
- [Box Basics](/box/overall/how-it-works): architecture, billing, and lifecycle.
- [Use Cases](/box/overall/use-cases)
- [Pricing & Limits](/box/overall/pricing)

## Sections

- [Basics](/box/overall/agent): the agent, custom agents and harnesses, git, shell, live sessions, filesystem, and snapshots.
- [Lifecycle](/box/overall/preview): public URLs, schedules, keep alive, and ephemeral boxes.
- [Security](/box/overall/security): secrets, network policy, and attached headers.
- [Browser](/box/overall/browser/overview): a cloud browser with tabs, page reading, AI actions, live view, recordings, and CDP.
- [Guides](/box/guides/remote-development): end-to-end setups for coding agents, frameworks, and agent platforms.

## For AI agents

- [/docs/box/llms.txt](https://upstash.com/docs/box/llms.txt) lists every Box page.
- Append `.md` to any page URL for its Markdown, for example [/docs/box/overall/quickstart.md](https://upstash.com/docs/box/overall/quickstart.md).