Polymarket Acquires Prediction Market API Startup Dome

Polymarket has acquired prediction market API startup Dome, with the transaction amount undisclosed, according to The Block. Dome, a member of Y Combinator's Fall 2025 cohort, offers a unified prediction market API, enabling developers to build applications, bots, dashboards, or trading tools across multiple platforms like Polymarket and Kalshi.

Dome previously secured $500,000 in funding from Y Combinator and completed a $4.7 million seed round. Its co-founders, Kunal Roy and Kurush Dubash, were founding engineers at Alchemy. Polymarket, last valued at $9 billion, had previously acquired the U.S.-regulated derivatives exchange QCEX.

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