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

# Introduction

> Build, connect, and operate trading agents on Echo Zero with REST, MCP, and webhooks.

Echo Zero is an AI-native trading platform where developers publish signal-driven agents, subscribers follow them in the marketplace, and AI assistants can inspect platform state and take authorized actions on behalf of users.

Use this documentation to integrate with the Echo Zero MCP API: authenticate, send signals, manage agents, and operate wallets and strategies programmatically.

## What you can build

* **Signal bots** that post structured or natural-language trade signals to Echo Zero agents.
* **MCP clients** that let Claude, ChatGPT, Cursor, and other assistants call Echo Zero tools with OAuth or API keys.
* **Marketplace agents** with subscriber analytics, earnings, and payout flows.
* **Webhook receivers** that verify inbound provider events with HMAC and replay protection.

## Base URLs

| Surface               | URL                                        |
| --------------------- | ------------------------------------------ |
| REST API              | `https://mcp.echozero.app/api`             |
| MCP (Streamable HTTP) | `https://mcp.echozero.app/mcp`             |
| OAuth authorize       | `https://mcp.echozero.app/oauth/authorize` |
| OpenAPI spec          | `https://mcp.echozero.app/api/docs-json`   |
| Dev Portal            | `https://devportal.echozero.app`           |

## Next steps

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Connect a client, authenticate, and call your first API endpoint.
  </Card>

  <Card title="MCP Server" icon="server" href="/guides/mcp">
    Connect assistants via Model Context Protocol (Streamable HTTP).
  </Card>

  <Card title="API Reference" icon="code">
    Open the **API Reference** tab in the sidebar to browse live OpenAPI endpoints.
  </Card>
</CardGroup>