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Polymarket Buys YC-Backed Dome to Expand Developer Tools for Prediction Markets

The deal brings Dome’s cross-platform API under Polymarket, strengthening interoperability for builders.

Overview

  • Polymarket and Dome confirmed the acquisition on Feb. 19 in posts on X, with financial terms and integration details not disclosed.
  • Dome built a unified API that provides live and historical market data, trading access, embeddable market data, and strategy deployment across multiple prediction platforms.
  • Dome participated in Y Combinator’s Fall 2025 batch and raised $500,000 from YC plus $4.7 million in seed funding.
  • Co-founders Kunal Roy and Kurush Dubash previously served as founding engineers at Alchemy, signaling a developer-centric focus for the acquisition.
  • The move follows Polymarket’s QCEX acquisition and CFTC green light for an intermediated trading platform, alongside recent distribution gains through Yahoo Finance, Google Finance, MLS, the NHL, a Parcl real-estate market launch, a Solana integration via Jupiter, and inclusion in the MetaMask mobile app.