Unified API access to multiple prediction markets for developers and traders.
Product memo
Developers and traders gain unified API access to real-time data from prediction markets such as Polymarket, Kalshi, and Gemini. It normalizes data into a consistent JSON format, simplifying integration for building trading bots and arbitrage detection tools. This approach removes friction for those operating in the expanding prediction market ecosystem.
For who
Developers and traders of prediction markets
Solves what
Unified API access to multiple prediction markets
- Unified API for Polymarket, Kalshi, Gemini
- Normalized JSON data
- Real-time market data
In their own words
One API forEvery Prediction Market
Stop juggling 3 APIs. Get unified data from Polymarket, Kalshi & Gemini in a single call. Ship faster with our comprehensive API documentation and transparent pricing.
Commercial cues
Model
subscription
Free tier
Yes
Trial
Available
Pricing Strategy
- • Annual billing for the Pro tier secures longer commitments from active users.
- • Free tier lowers testing friction.
Operator context
Founded
Jan 2026
HQ
United States
Platform
API
Audience
Developers
Payments
Stripe
Public footprint
Tech stack
Builder Strategy
- Strategy Type
- Niche Specialist
- Stage
- Vc Growth
- Effort
- Solo Buildable
About Propheseer Expand
Propheseer provides a unified API for developers and traders, simplifying access to real-time data from various prediction markets. It normalizes complex data from platforms like Polymarket, Kalshi, and Gemini into a consistent JSON output, making it easier to integrate into custom applications.
The product serves as a critical infrastructure layer, removing the need for individual market integrations and shortening development in the prediction market space.