Polymarket acquisition of Dome sharpens its prediction market API strategy

In a move that could reshape prediction market infrastructure, Polymarket acquisition of Dome signals a deeper push into developer tools and cross-platform market access.

Polymarket confirms takeover of YC-backed Dome

Polymarket has acquired Dome, a Y Combinator-backed startup building a unified API for prediction markets, in a deal confirmed by both companies on Feb. 19 in coordinated posts on X. However, neither side disclosed the financial terms or clarified how Dome’s team or product will be integrated into Polymarket’s broader platform.

According to information published by Y Combinator, Dome was part of its Fall 2025 cohort and focuses on delivering a single integration layer for prediction venues where developers can access live and historical market data. Moreover, the project aims to streamline connectivity across fragmented venues, lowering the technical barrier for new applications.

Dome’s unified API and funding history

In its YC profile, Dome describes its core product as a unified API that lets users trade, embed market data into products, and deploy strategies over multiple platforms through a single interface. That said, this architecture is designed to reduce complexity for developers who would otherwise need to maintain several separate integrations.

Dome raised $500,000 from Y Combinator and subsequently secured an additional $4.7 million in seed funding, according to details shared on X by co-founder Kunal Roy. Alongside fellow co-founder Kurush Dubash, Roy previously served as a founding engineer at Alchemy, underscoring the team’s background in high-scale infrastructure.

Commenting on the deal, Dubash wrote on X that the team is “obsessed with prediction markets and want to have the biggest impact in the space.” Moreover, he added that there is “no better place” to pursue that ambition than Polymarket, suggesting Dome will be tightly aligned with Polymarket’s long-term product roadmap.

Strategic context for Polymarket and its acquisitions

This transaction marks Polymarket’s first official acquisition centered explicitly on developer infrastructure, following its earlier purchase of QCEX, a derivatives exchange and clearinghouse licensed by the U.S. Commodity Futures Trading Commission. The QCEX deal was part of Polymarket’s broader strategy to re-enter the U.S. market under a compliant, intermediated structure.

By adding Dome, Polymarket strengthens its position across the prediction markets api landscape while also broadening the tools available to third-party developers. However, specific details on how Dome’s unified stack will surface within Polymarket’s user-facing products, or whether it will remain a standalone service, have not yet been revealed.

In this context, the polymarket acquisition of Dome could help standardize how developers connect to multiple venues, potentially making it easier for media outlets, fintech platforms, and retail apps to embed real-time market expectations into their products.

Expanding partnerships and ecosystem reach

Since receiving approval from the Commodity Futures Trading Commission to operate an intermediated trading platform, Polymarket has struck several high-profile partnerships. These include integrations with major financial media brands such as Yahoo Finance and Google Finance, as well as collaborations with leading sports organizations like Major League Soccer and the National Hockey League.

More recently, Polymarket partnered with Parcl to launch a market tied to real estate trends, extending prediction trading into property-linked themes. Moreover, the platform expanded onto the Solana blockchain via an integration with Jupiter and was added to the MetaMask mobile app, significantly widening its potential retail distribution footprint.

Outlook for Polymarket and Dome

While Polymarket and Dome have not yet published a joint roadmap, the acquisition suggests a clear focus on turning prediction markets into a plug-and-play layer for applications across finance, media, and sports. That said, how quickly Dome’s technology is rolled into Polymarket’s stack, and whether external developers gain direct access, remains to be seen.

Overall, the combination of Polymarket’s growing network of partners with Dome’s API-centric approach positions the company to deepen its role as core infrastructure for real-money event markets.