# E2B Documentation (/docs)
Related: [API key](/docs/api-key.md)
## What is E2B? [#what-is-e2b]
E2B provides isolated sandboxes that let agents safely execute code, process data, and run tools. Our SDKs make it easy to start and manage these environments.
Start a sandbox and run code in a few lines:
JavaScript & TypeScript
Python
```bash
npm i e2b
```
```bash
pip install e2b
```
JavaScript & TypeScript
Python
```javascript
import { Sandbox } from 'e2b'
const sandbox = await Sandbox.create() // Needs E2B_API_KEY environment variable
const result = await sandbox.commands.run('echo "Hello from E2B Sandbox!"')
console.log(result.stdout)
```
```python
from e2b import Sandbox
sandbox = Sandbox.create() # Needs E2B_API_KEY environment variable
result = sandbox.commands.run('echo "Hello from E2B Sandbox!"')
print(result.stdout)
```
## E2B building blocks [#e2b-building-blocks]
A quick overview of the core building blocks you'll interact with when using E2B.
* [**Sandbox**](/docs/sandbox) — A fast, secure Linux VM created on demand for your agent
* [**Template**](/docs/template/quickstart) — Defines what environment a sandbox starts with
## How to use the docs [#how-to-use-the-docs]
The documentation is split into three main sections:
* [**Quickstart**](#quickstart) — Step-by-step tutorials that walk you through creating your first E2B sandboxes.
* [**Examples**](#examples) — In-depth tutorials focused on specific use cases. Pick the topics that match what you're building.
* [**SDK Reference**](https://e2b.dev/docs/sdk-reference) — A complete technical reference for every SDK method, parameter, and configuration option.
## Quickstart [#quickstart]
## Examples [#examples]
Build AI agents that see, understand, and control virtual Linux desktops using E2B Desktop sandboxes.
Use E2B sandboxes in your GitHub Actions workflows to run testing, validation, and AI code reviews.