> ## Documentation Index
> Fetch the complete documentation index at: https://docs.a0.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

## Why this matters

After analyzing millions of chats, we've identified several patterns that are stopping users from completing their app.
This guide breaks down exactly how to talk to a0.dev to get what you want.

## What you'll learn

<CardGroup cols={2}>
  <Card title="Three Principles" href="/agent-guide/three-principles">
    The three things that really matter when sending a message
  </Card>

  <Card title="Writing Prompts" href="/agent-guide/writing-prompts">
    How to write prompts that get results, examples included
  </Card>

  <Card title="New Chat" href="/agent-guide/new-chat-explained">
    When and why to start a new chat while keeping your app
  </Card>
</CardGroup>