Kalshi

Kalshi WebSocket Streaming API

Real-time streaming feed for market data, order book updates, fills, and portfolio events on Kalshi. Documented as an AsyncAPI spec alongside the OpenAPI REST surface.

GitHub

Documentation

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Documentation
https://docs.kalshi.com/api-reference

Specifications

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AsyncAPI
https://docs.kalshi.com/asyncapi.yaml
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AsyncAPI
https://raw.githubusercontent.com/api-evangelist/kalshi/refs/heads/main/asyncapi/kalshi-asyncapi.yml

AsyncAPI Specification

asyncapi.yaml Raw ↑