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

# Introduction

> World Engine client SDKs for building your game client

## Client SDKs

We provide powerful client SDKs for connecting to your World Engine stack.

* Send **commands** to your shard
* **Query** your shard
* **Subscribe** to **events** from your shard
* **Region selector** for connecting to shards in multiple regions
* **Authentication** with [Argus ID](https://auth.argus.gg/)

<CardGroup cols={2}>
  <Card title="JavaScript SDK" icon="pen-to-square" href="/javascript/introduction">
    JavaScript SDK (with optional React support) for building your game client
  </Card>
</CardGroup>