Kalshi data
Predexon captures the Kalshi market record from our own always-on infrastructure: event contracts, trades, prices, and every orderbook update, stored tick by tick and normalized into the same schema as Polymarket and other venues.
That means one integration gives you regulated US event contracts alongside crypto-native venues — query markets, trades, and orderbooks over REST, and download tick-level orderbook history as Parquet.
Full Kalshi catalog with series, status, and settlement data
Execution history per market
Yes/no prices and candlesticks per market
Current book snapshots over REST
Tick-level book replay, downloadable as Parquet
Same schema as Polymarket — compare markets across venues
curl "https://api.predexon.com/v2/kalshi/markets?search=cpi&status=open" \
-H "x-api-key: <your-api-key>"
# Trades for a market
curl "https://api.predexon.com/v2/kalshi/trades?market_ticker=<market-ticker>" \
-H "x-api-key: <your-api-key>"
# Quote an orderbook-history slice — free
curl "https://api.predexon.com/v2/data/ticks/quote?venue=kalshi" \
-H "x-api-key: <your-api-key>"Sign up at dashboard.predexon.com for an API key, then query REST endpoints for Kalshi events, markets, trades, prices, and orderbook snapshots. A free tier is available with no credit card.
Yes — Predexon has recorded the Kalshi orderbook tick by tick since January 2026, capturing every placement, update, cancel, and fill. Slices are downloadable as compressed Parquet, finalized daily through the previous day.
Yes. All venues share one normalized schema, so cross-venue queries — matching markets, comparing prices, spotting divergences — work out of the box without per-venue mapping code.
Kalshi coverage is REST-based today: current markets, prices, trades, and orderbook snapshots on demand, plus tick-level history finalized daily. The real-time WebSocket currently streams Polymarket.
Tick-level orderbook history, the fastest WebSocket, and blockchain-indexed analytics for every major prediction market — through one clean, predictable API.