PolyHistorical

What it does

Backtest Polymarket Up/Down Markets with Real Order Book Data. Full historical order book depth at sub-second resolution.

Polymarket historical order book data API with 300ms snapshots for backtesting, bots, and market research.

> 300ms order book snapshots for every BTC, ETH, and SOL Polymarket market. Full bid/ask depth, 13,000+ resolved markets. Built for traders, bots, and researchers. PolyHistorical is an independent historical-data API for Polymarket prediction markets. It is not affiliated with, endorsed by, or connected to Polymarket or any exchange. The product captures the full Level-2 order book at 300ms intervals for every active market, including bid/ask depth, UP/DOWN token prices, and BTC/ETH/SOL reference prices from Binance and Chainlink. Pro users can also query historical Binance BTC/USDT spot and USD-M futures order book depth for cross-market analysis. PolyHistorical is best for execution-aware…from polyhistorical.com

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