Prediction markets are one of the most exciting developments in finance and information aggregation. But the developer experience of integrating with them leaves a lot to be desired.
Fragmentation is the Bottleneck
Each exchange — Polymarket, Kalshi, and others — operates its own API with unique authentication, data models, and trading mechanics. If you want to trade across markets, you need to build and maintain separate integrations for each one.
What Traders Actually Need
Most traders and developers want the same things: a way to search markets, compare prices, and execute trades. The exchange-specific details are implementation noise.
The CCXT Precedent
In crypto, CCXT solved this exact problem by providing a unified interface across 100+ exchanges. Prediction markets deserve the same treatment.
Building for the Future
As new prediction markets launch — and they will — a unified API becomes even more valuable. Build once, connect everywhere. That's the vision behind PAPI.
Check out our documentation to see the API in action.
