API Playground

Query live prediction market data — real markets, real prices, zero setup.

See what the world is betting on right now. This queries Polymarket's Gamma API for the highest-volume open markets.

JavaScript
Response 
// Click "Run" to see live results

Ready to trade?

The playground uses read-only endpoints. To place real trades, create an account on one of the platforms below.

Start on Polymarket → Start on Kalshi (Free Demo) →

Kalshi offers a free demo environment — perfect for testing your code with fake money before going live.

Go Deeper

Polymarket API: The Complete Developer Guide → Kalshi API: Complete Trading Automation Guide → The Agent Betting Stack →