# Polymarket Snaps Up Prediction Market API Startup Dome

*Author: William M. Peaster*
*Published: Feb 19, 2026*
*Source: https://www.bankless.com/read/news/polymarket-snaps-up-prediction-market-api-startup-dome*

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Polymarket has [acquired Dome](https://www.theblock.co/post/390546/polymarket-buys-fresh-prediction-market-api-startup-dome-marking-second-official-acquisition), a Y Combinator-backed startup that built a unified API layer for prediction markets, in the company's second-known acquisition. The move is the latest in Polymarket's push to aggressively expand its developer ecosystem.

### **What's the Scoop?**
- **The Context:** Dome, a Fall 2025 YC cohort graduate, [built infrastructure](https://domeapi.io/) that lets developers plug into multiple prediction markets, like Polymarket and Kalshi, through a single API. 
- **The Deal:** Polymarket's acquisition price wasn't disclosed, though Dome had previously raised $5.2M across a YC grant and seed round.
- **Founder Pedigree:** Dome's two co-founders both served as founding engineers at Alchemy, a leading Ethereum infrastructure provider. This background in developer tooling likely made the startup attractive to Polymarket as it looks to deepen its infra.
- **Acquisition Streak:** The Dome deal marks Polymarket's second acquisition, following its purchase of CFTC-licensed derivatives exchange [QCEX](https://www.theblock.co/post/363623/polymarket-plans-to-re-enter-us-with-acquisition-of-derivatives-exchange-qcex), which paved the way for its return to the U.S. market. 

### **Bankless Take:**
Polymarket isn't thinking in "single app" terms, as the Dome buyup suggests it's building toward becoming an infra layer that the *entire *predictions industry can run on. This stronger grip on developer tooling should help consolidate more of the ecosystem's activity around Polymarket's rails over time. 

> We’re committed to creating the best developer experience in prediction markets.Building a world class experience requires world class talent…Welcome to Polymarket, [@GetDomeAPI](https://twitter.com/getdomeapi?ref_src=twsrc%5Etfw). [pic.twitter.com/JmzBDssYMH](https://t.co/JmzBDssYMH)— Polymarket (@Polymarket) [February 19, 2026](https://twitter.com/Polymarket/status/2024514315823509826?ref_src=twsrc%5Etfw)
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