Welcome to Kalshi’s API Documentation

This documentation covers the Kalshi Exchange API for real-time market data and trade execution

By continuing to use or access Kalshi’s API, you are agreeing to be bound to our Developer Agreement

Making Your First Request

Make your first API call and start trading on Kalshi.

OpenAPI Specification

Download the OpenAPI specification for API integration.

Demo Environment

Test your integration in our safe demo environment.

Rate Limits

Understand API rate limits and best practices.

API Reference

Explore our complete API documentation.

Changelog

Stay updated with the latest API changes.

Kalshi Glossary

Learn key terms and concepts used in the Kalshi exchange.

WebSocket API

Learn about real-time data streaming via WebSockets.

Market Data

Quick start guide for accessing market data.

Learn more about Kalshi

API Keys

Learn how to generate and manage your API credentials.

AsyncAPI Specification

Download the AsyncAPI specification for WebSocket integration.

Trading Console

Access the Kalshi trading platform.

Kalshi Academy

Explore educational resources and tutorials.