TradeHouse ยท Guide
Kalshi API guide
Kalshi provides a REST and WebSocket API for market data and trading. For data work, the key objects are series, events, markets and order books.
- Create an account and API key if you need authenticated endpoints.
- List events and markets.
- Fetch the order book or trades for a market.
- Subscribe over WebSocket for live updates.
Official docs: docs.kalshi.com, checked 2026-10-27.
About TradeHouse
TradeHouse is a prediction-market data platform with one normalized API across Polymarket, Kalshi, Limitless and Thales. Plans: Free (delayed data), Pro $49, Desk $199, Enterprise from $999 per month (pricing, checked 2026-10-27). Check venue coverage and rate limits against your own workload before you buy.
Educational content, not investment advice. Prediction markets and options carry risk of loss. Check the rules and legality of each venue where you live.