polymarket

You retrieve real-time Polymarket odds by querying public CLOB REST endpoints for current Yes/No token prices, midpoint, spread, and orderbook depth. This provides immediate insight into the pricing and liquidity behind active prediction markets.

Browsing prediction markets is done by querying the Gamma API to search events by topic, slug, tag, or trending volume. This enables efficient market discovery and allows filtering active prediction events based on current trading activity.

You can pull historical price history and recent trades for Polymarket prediction markets by querying the Data API. This allows reviewing past market movements, open interest, and specific trade activity to understand how event odds shifted over time.

To map condition IDs and token IDs across Polymarket APIs, you parse the double-encoded Gamma fields and cross-reference them with CLOB and Data API endpoints. This ensures accurate data alignment when retrieving prices, orderbooks, and historical market activity.

A limitation of using public REST endpoints for Polymarket market data is the requirement to parse double-encoded Gamma fields and manually map condition IDs across APIs. Users must handle this structural complexity to successfully retrieve and align real-time pricing and historical trade data.