> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fermion.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Initialization (Sandbox)

> Learn how to initialize a new Fermion Sandbox client before creating containers using the Python SDK.

Before you can create or manage containers, you must first initialize the Fermion Sandbox client in Python. The `Sandbox(api_key=...)` constructor establishes a secure connection between your Python application and Fermion’s backend infrastructure, authenticating every subsequent operation you perform.

This step **does not immediately create a container** and instead, it prepares the client instance for later actions such as creating sandboxes, reconnecting to existing sessions, or running commands.

***

### `Sandbox(api_key: str)`

**Description:**\
Creates a new Sandbox client instance. This does not create a container yet, you will need to call `create()` or `from_snippet()` after initialization.

**Parameters:**

| Parameter | Type  | Required | Description                             |
| --------- | ----- | -------- | --------------------------------------- |
| `api_key` | `str` | Yes      | Your Fermion API key from the dashboard |

**Returns:**\
`Sandbox` instance

***

### **Example:**

```python theme={null}
from fermion_sandbox import Sandbox

# Initialize the Fermion Sandbox client
sandbox = Sandbox(api_key="your-api-key")
```