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The Polymarket API provides programmatic access to the world’s largest prediction market. The platform is served by three separate APIs, each handling a different domain.

APIs

Gamma API

https://gamma-api.polymarket.comMarkets, events, tags, series, comments, sports, search, and public profiles. This is the primary API for discovering and browsing market data.

Data API

https://data-api.polymarket.comUser positions, trades, activity, holder data, open interest, leaderboards, and builder analytics.

CLOB API

https://clob.polymarket.comOrderbook data, pricing, midpoints, spreads, and price history. Also handles order placement, cancellation, and other trading operations. Trading endpoints require authentication.
A separate Bridge API (https://bridge.polymarket.com) handles deposits and withdrawals. Bridges are not handled by Polymarket, it is a proxy of fun.xyz service.

Authentication

The Gamma API and Data API are fully public — no authentication required. The CLOB API has both public endpoints (orderbook, prices) and authenticated endpoints (order management). See Authentication for details.

Next Steps