Docs
How Kairos works, in plain pages: the API surface, authentication, order types, synthetic books, and the venues behind the aggregated book. Live endpoint testers and full schemas live in the interactive reference at app.kairos.trade/docs.
All docs
The Kairos API: Base URLs, Providers, and Modules
The Kairos API serves prediction market data, trading, and analytics across Kalshi, Polymarket, Predict.fun, and Hyperliquid. Base URLs, provider IDs, and modules.
Kairos
4 min read
How Authentication Works on the Kairos API
The Kairos API accepts API keys (three headers, scoped) and JWT bearer tokens. Which endpoints need which credential, the scopes, and the free tier that needs neither.
Kairos
4 min read
Order Types on Kairos: Market, Limit, and Time in Force
Kairos supports market and limit orders with GTC, FOK, FAK, IOC, and GTD time in force, across Kalshi and Polymarket. The parameters, statuses, and the price rule.
Kairos
5 min read
What Is a Synthetic Book?
A synthetic book is a live order book for a weighted package of prediction market outcomes. How the formula works, how bids and asks combine, and how to consume one.
Kairos
4 min read
Which Venues Does Kairos Support?
The Kairos terminal trades Kalshi, Polymarket, and Predict.fun in one order book. The API also serves Hyperliquid HIP-4 outcome market data. The full venue list.
Kairos
3 min read