Pay-per-use prediction market APIs — $0.01/query via x402
Real-time bucket-market analysis with buy/sell signals based on spot price vs implied probability.
$0.01Cross-venue arbitrage spreads across CoinGecko, Binance, and Kraken. Supports BTC, ETH, SOL.
$0.01Compares Polymarket implied probabilities against 24h price momentum to detect divergence.
$0.01Finds arbitrage opportunities between Polymarket and Kalshi for the same events.
$0.02Scans all Polymarket events for bucket-sum arbitrage, temporal contradictions, and spot-price edges.
$0.02Finds bucket markets where spot price is clearly in-range but YES is still trading at a discount.
$0.02Current gas prices across Polygon, Base, and Arbitrum. Know when to transact.
$0.015-point check: contract detection, source verification, proxy detection, ownership, honeypot simulation.
$0.02Check an address's balance and transaction count on Polygon.
$0.01Register a webhook. We POST alerts when spreads exceed your threshold. 10 credits per $0.01.
$0.01Free: GET /api/markets · GET /api/status?subscription_id=...
1. Request an endpoint → get 402 Payment Required with payment details
2. Send $0.01–$0.02 USDC on-chain to the wallet below
3. Re-send the request with your payment proof → get your data
Learn more: x402 protocol · docs
Payment address (Polygon, Base, Arbitrum):