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

# Introduction

> Historical data API for crypto prediction markets

# Welcome to PolyHistorical

PolyHistorical is a historical data API for cryptocurrency prediction markets. We capture real-time snapshots of prices, order books, and outcomes at regular intervals, giving traders and developers the data they need to backtest strategies and analyze market behavior.

## What you can do

<CardGroup cols={2}>
  <Card title="Query Markets" icon="chart-line" href="/api-reference/list-markets">
    Browse active and resolved prediction markets with filtering and pagination.
  </Card>

  <Card title="Get Snapshots" icon="camera" href="/api-reference/get-snapshots">
    Access time-series snapshots with price data and full order book depth.
  </Card>

  <Card title="Strategy Replay" icon="play" href="/guides/strategy-replay">
    Replay any past market tick-by-tick with your own entry and exit rules. Pro feature.
  </Card>

  <Card title="Real-time Data" icon="bolt" href="/api-reference/overview">
    Sub-second granularity with snapshots captured every 5m, 15m, 1h, 4h, and 24h.
  </Card>

  <Card title="Binance Spot" icon="coins" href="/api-reference/binance-spot">
    Access Binance Spot historical order book data, trades, and BTC/USDT snapshots.
  </Card>

  <Card title="Binance Futures" icon="chart-candlestick" href="/api-reference/binance-futures">
    Access Binance Futures historical order book data, trades, and BTC/USDT snapshots.
  </Card>
</CardGroup>

## Supported markets

| Coin          | Market Types                                      | Availability     |
| ------------- | ------------------------------------------------- | ---------------- |
| BTC           | 5m, 15m, 1h, 4h, 24h                              | All plans        |
| ETH           | 5m, 15m, 1h                                       | Pro & Enterprise |
| SOL           | 5m, 15m, 1h                                       | Pro & Enterprise |
| BTC/USDT      | Binance Spot & Futures depth snapshots            | Pro & Enterprise |
| BTC, ETH, SOL | Binance Spot & Futures historical order book data | Pro & Enterprise |

## Quick links

<CardGroup cols={3}>
  <Card title="Get your API key" icon="key" href="https://polyhistorical.com/dashboard?tab=api-keys">
    Sign up free. No credit card required.
  </Card>

  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Make your first API call in under a minute.
  </Card>

  <Card title="Pricing" icon="tag" href="/guides/pricing">
    Start free, upgrade when you need more.
  </Card>
</CardGroup>