PolyOrderbooks
Historical Polymarket data for backtesting
What is PolyOrderbooks?
Backtest Polymarket strategies against the order book that actually existed. PolyOrderbooks provides historical L2 bid/ask depth, prices, and liquidity data through a REST API and Python SDK. Query 1-second historical snapshots, analyze spreads and depth, and model realistic fills instead of relying only on midpoint price history. Free tier available.
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