Documentation

Prediction Markets API Docs

One unified API for prediction market data across Kalshi, Polymarket, and Novig. Clean JSON, consistent schemas, real-time and historical data.

Setup & Authentication

Get your API key and make your first request.

Quickstart

Fetch live prediction market data in under 5 minutes.

Pagination

Cursor-based batching for large result sets.

Real-Time Streaming

WebSocket feeds for live market price updates.

Best Practices

Patterns to follow and common mistakes to avoid.

Prediction Markets

Supported platforms: Kalshi, Polymarket, Novig.

League IDs

Full list of leagueID values and their sportID groupings.

Base URL

https://api.sportsgameodds.com/v2