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Polymarket-Kalshi-arbitrage-bot

github.com/RizkyDCuirass/Polymarket-Kalshi-arbitrage-bot

Monitorrisk: LowTypeScript0 starsfound Aug 10, 2026

Detects price gaps between Polymarket and Kalshi to make timely buy decisions using configurable arbitrage rules.

Strategy

Cross-Exchange Arbitrage: identifies price discrepancies for similar 15-min BTC markets across two platforms.


This bot targets a straightforward and potentially lucrative angle: arbitraging the same underlying asset (Bitcoin 15-minute bars) between Polymarket and Kalshi. These aren't exact matches as the products and their liquidity differ, but price deviations can happen, creating a chance to buy on the cheaper exchange and sell on the more expensive one. The description mentions configurable rules, which is good for flexibility. The repo itself is relatively small (598KB) and written in TypeScript. The main concern is a lack of stated logic for the 'configurable arbitrage rules'—is it a static price spread threshold or a dynamic relative value strategy? The true execution logic will be in the main bot files. The presence of 'fastapi' as a topic suggests there might be a backend layer, possibly for a dashboard or API interface. This type of bot requires high-speed execution, low latency connections to both exchanges, and a thorough understanding of each exchange's fees and settlement rules. The repo is a starting point, but it's more of a functional template than a completely polished, ready-to-run high-frequency trading engine. For a proactive trader, it warrants a look to assess the rules logic.