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

# Introduction

Zenbu.js is the framework for building extensible applications that powers [Zenbu](https://zenbu.dev).

Apps and plugins built with Zenbu.js are designed to be modified after they are installed. Users can edit the source code directly, or install plugins that extend the app with new functionality.

The SDK also handles the hard parts of application development, like syncing state between processes, RPC, and hot-reloading everything as you make changes.

### Why build with Zenbu.js

* Coding agents can generate and customize software on demand for a specific use case. An app built on Zenbu.js gives them full access to do that.
* Letting people modify your app means more directions get explored than you could reach on your own.
* Extensible code tends to be more maintainable, because it's already written to be changed.

## Quick links

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Create your first Zenbu.js app in under a minute.
  </Card>

  <Card title="Concepts" icon="book" href="/concepts">
    Understand the plugin model, state, and RPC.
  </Card>
</CardGroup>