5 out of 5 stars
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Trading platform
Dome
5 out of 5 stars5.0 · 1 reviewPrediction-market APIs and SDK for developers. One integration for Polymarket and Kalshi data — historical order books, real-time trade webhooks and WebSockets, and backtesting — via REST plus TypeScript and Python SDKs.
Fees0%
Markets3
CustodySelf-custody
AccessMobile · Web
Overview
Prediction-market APIs and SDK for developers. One integration for Polymarket and Kalshi data — historical order books, real-time trade webhooks and WebSockets, and backtesting — via REST plus TypeScript and Python SDKs.
How it works
- Integrate once to pull data and execute across Polymarket and Kalshi.
- Access historical order books and pricing for research and backtesting.
- Stream real-time trades and market moves via webhooks and WebSockets.
- Build with REST plus TypeScript and Python SDKs.
Supported markets
- Polymarket
- Kalshi
- More platforms coming
Freefree sign-up
Sign up free — developers are onboarded on a schedule. Y Combinator-backed (F25).
Get Dome- Unified SDK for multiple prediction markets
- Historical order-book snapshots & pricing
- Real-time trades via webhooks & WebSockets
- Backtesting and market-analysis support
- REST API + TypeScript & Python SDKs
- Author
- Dome
- Category
- Platforms & Tools
- Website
- domeapi.io
- Added
- Jul 3, 2026
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