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Arbitrage Betting API — Developer Documentation
Arbitrage Betting API — Developer Documentation
Arbitrage betting API docs for Polymarket, Kalshi, and Opinion. REST endpoints for live arbs, orderbooks, fee-adjusted ROI, and bot integrations. Premium plan from $299/mo.
The ArbBets API provides programmatic access to arbitrage opportunities across prediction markets like Kalshi and Polymarket. For a product overview, see the arbitrage betting API page; for live scanning without code, use the arbitrage bet finder.
What is Arbitrage?
Arbitrage betting exploits price differences between markets. When the same event is priced differently on Kalshi vs Polymarket, you can bet both sides and lock in risk-free profit.
API Features
- Real-time Detection: Scan orderbooks across Kalshi and Polymarket for arbitrage opportunities
- Investment Calculator: Get exact bet amounts for any investment size
- Profit Filtering: Filter by minimum profit threshold
- Direct Links: Receive deep links to place trades on each platform
Quick Example
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://getarbitragebets.com/api/internal/arbs-full_2?investment=100&min_profit=1.9"Returns profitable arbitrage opportunities with calculated bet amounts for your investment.
Next Steps
- Get your API key from the dashboard
- Learn the endpoint parameters and response format
- Review Premium pricing for API credits and plan limits
- Size trades manually with the Kalshi arbitrage calculator while integrating