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

# Introduction

> Unified prime brokerage for prediction markets

# Welcome to River Markets

River Markets provides a unified prime brokerage interface for prediction markets, including:

* **Liquidity aggregation** across multiple exchanges
* **Smart order routing** to get the best execution
* **Market and data search** with unified identifiers
* **Portfolio management** with subaccounts

## Supported Exchanges

| Exchange      | Markets                         | Status             |
| ------------- | ------------------------------- | ------------------ |
| Kalshi        | US regulated prediction markets | Available          |
| Polymarket    | Crypto prediction markets       | Available          |
| Polymarket US | US regulated prediction markets | Available          |
| Novig         | US regulated prediction markets | Coming soon        |
| Rothera       | US regulated prediction markets | Future integration |

## How It Works

1. **Search** for markets across all supported exchanges using a single API
2. **Place orders** using unified River IDs — no need to manage exchange-specific identifiers
3. **Track positions** and fills in real-time across your entire portfolio
4. **Manage strategies** with isolated subaccounts

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Get up and running in 5 minutes
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference/overview">
    Explore the full API
  </Card>

  <Card title="Core Concepts" icon="book" href="/concepts/river-ids">
    Understand River IDs, subaccounts, and order types
  </Card>
</CardGroup>