Platform · Infrastructure & Tooling
Dome (getdomeapi)
Unified API for prediction markets (Polymarket + Kalshi + Limitless) · YC F25, acquired by Polymarket Feb 19, 2026
- Mechanism
- Infrastructure & Tooling
- Chain
- Multi (Polymarket on Polygon + Kalshi via API + Limitless on Base, etc.)
- Status
- Acquired by Polymarket (Feb 19, 2026); operations continuing as part of Polymarket developer ecosystem
- Founded
- 2025 (YC Fall 2025 batch)
- Market types
- Binary
- Audience
- Builder/infra · Institutional · Quant
- Website
- domeapi.io
- @getdomeapi
Pricing mechanism
Aggregation API · unified data + trade execution across multiple PM venues
Settlement
Inherits upstream venues
Strengths
- Best-funded PM-infra startup pre-acquisition ($5.2M, YC F25)
- Founders' Alchemy pedigree + prior Polymarket engineering relationships made acquisition fit natural
- Acquired by Polymarket · strongest possible exit signal for a PM-infra play
- Now sits inside Polymarket's ecosystem strategy as the official unified-API surface for developer integrations
Weaknesses
- Post-acquisition independence questionable · Polymarket controls roadmap, may de-prioritize non-Polymarket venue support over time
- Binary-only PM coverage; no continuous/distribution market support
- Third-party developers reliant on Dome now have Polymarket as a single point of governance/data risk
About this mechanism
Aggregators, terminals, oracles, Telegram bots, smart-contract primitives. Partners more than competitors · earn from PM activity without taking the other side.