Skip to content
Log in

Kalshi API guide for market data developers

Plan a Kalshi market-data integration using official market and order-book documentation.

Start a Kalshi market-data integration with its official documentation for markets, event definitions, and order-book representations.

Preserve market definitions

Keep event and market identifiers attached to each observation. Review contract outcomes, settlement conditions, timestamps, price units, and liquidity before converting a quote into an analytical probability.

Review the order book

The best available quote and the last trade answer different questions. Understand the provider's representation and authentication requirements before selecting an endpoint. Keep trading credentials and account activity outside a read-only research application.

Oddswire availability

Kalshi integration is planned. Oddswire currently provides no Kalshi feed or customer coverage commitment. This guide helps you evaluate the provider's documented interface.

Read the official Kalshi API documentation, settlement and fee checks, Polymarket guide, and Oddswire docs.

Build with the documented contract

Explore the API reference and register interest in the private developer beta.

Read the docsBeta updates