Polymarket acquires prediction market API startup Dome

PANews reported on February 20th that, according to The Block, Polymarket has acquired prediction market API startup Dome, though the specific transaction amount was not disclosed. Dome, a member of Y Combinator's Fall 2025 cycle, provides a unified prediction market API, allowing developers to create applications, bots, dashboards, or trading tools across multiple platforms such as Polymarket and Kalshi. Dome previously received $500,000 in funding from Y Combinator and completed a $4.7 million seed round. Its co-founders, Kunal Roy and Kurush Dubash, are both founding engineers at Alchemy.

Polymarket was recently valued at $9 billion after acquiring QCEX, a U.S.-regulated derivatives exchange. In addition, Polymarket has signed multiple distribution agreements with Major League Soccer (MLS), the National Hockey League (NHL), and media companies such as Substack.