API Reference

resources, libraries, walkthroughs and more

Welcome to Kalshi exchange's trader and developer documentation. This guide outlines exchange functionality, market details and API architecture.

NEW: We've introduced a new API base URL for elections. Endpoint paths remain the same. Update all requests to use the new elections URL to operate on election markets.

  • Main Exchange: https://trading-api.kalshi.com/trade-api/v2
  • Elections Exchange: https://api.elections.kalshi.com/trade-api/v2

By continuing to use or access Kalshi's API, you are agreeing to be bound to the terms of the Kalshi Developer Agreement