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Events, markets, prices, order books, price history and trades across Polymarket, Kalshi, Limitless and predict.fun, each answer carrying its own freshness signal. One market id (universal_id) follows the same market across every venue.

Quickstart

Get a key and make your first request in a few minutes.

REST API

Events, markets, order books, candles and trades; the REST API tab lets you try any endpoint.

WebSocket stream

Live books, prices and trades pushed as they change.

Rate limits

Your plan’s limits and the headers that track them.

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REST or stream?

Access is free and granted on request: see Get a key.