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

# The SDK

> Learn about the Serverless SDK, the primary method of interacting with Vast Serverless.

The Vast Serverless SDK is a Python `pip` package that provides tools for both **creating serverless endpoints** and **sending and managing requests** to those endpoints. It abstracts much of the complexity of interacting with the serverless engine and individual workers.

## What the SDK Handles

The SDK manages the following core functions for the client:

* **Authentication**
* **All communication** between the client, endpoints, and individual workers
* **Request queuing**
* **Error handling and retries**
* **Creating and managing asynchronous sessions**
* **Providing worker status and lifecycle information**

## Why Use the SDK

While there are other ways to interact with serverless endpoint, such as the CLI and the REST API, the SDK is the **most powerful and easiest** method to use as it incorporates all best practices for using the API. It is the **recommended approach** for most applications due to its higher-level abstractions, reliability, and ease of integration into Python-based workflows.

If the SDK or CLI are not usable for your application, please contact support to request further assistance. We're happy to help.