[Polymarket Acquires Prediction Market API Startup Dome] Odaily Planet Daily reports that the on-chain prediction market platform Polymarket has announced the acquisition of the prediction market API startup Dome, with the transaction amount undisclosed. This marks Polymarket's second official acquisition. Dome, a Y Combinator Fall 2025 incubator project, provides a unified prediction market API to help developers build applications, trading bots, and data dashboards that can simultaneously integrate with multiple platforms such as Polymarket and Kalshi. The company previously received $500,000 in investment from YC and completed a $4.7 million seed funding round. Polymarket is currently valued at approximately $9 billion and has been actively expanding its business footprint through mergers and partnerships. Previously, it acquired the U.S.-licensed derivatives exchange QCEX to facilitate its return to the U.S. market. Additionally, the company has established distribution partnerships with Major League Soccer (MLS), the National Hockey League (NHL), and media platform Substack.