How to get Kalshi and Polymarket odds and price history in one spreadsheet

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Prediction markets put a live price on questions like rate decisions, inflation prints, elections and the weather. If you are building a dashboard, a research notebook or a model, you quickly hit two problems: Kalshi and Polymarket each have their own APIs with their own field names and units, and comparing them means writing and maintaining two clients. This guide shows how to get both into one normalized table with a small Apify Actor published by Hay Equipos called Prediction Markets Data: Kalshi and Polymarket Odds API. It reads only the exchanges' official public market data APIs. No logi

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