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Polymarket/Kalshi arbitrage bot

Cross-venue prediction market orderbook monitor and delta-neutral execution engine for mispriced binary event contracts across Polymarket CLOB and Kalshi.

PythonAsyncIOWebSocketsPolygon RPCKalshi FIX/REST

Binary contracts settling on identical real-world events frequently diverge across Polymarket's Polygon-settled CLOB and Kalshi's regulated orderbook during high-volatility news windows.

Resolution Risk & Execution Mechanics

Built drawing on my background in API solutions engineering at a major crypto exchange and algorithmic trading systems. The engine ingested L2 WebSocket books from both venues, computed fee-adjusted synthetic locked-in spreads (YES_VenueA + NO_VenueB < $1.00 minus taker/gas fees), and flagged oracle-rule divergence risks before dispatching legged limit orders.

Polymarket and Kalshi cross-venue orderbook spread and execution monitor

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