markets.bellwether
prediction-markets
Bellwether
Live Kalshi + Polymarket prediction-market data and cross-venue arbitrage spreads, one schema.
Hosted
Streamable HTTPofficialserviceDeployment
Hosted
streamable-http
https://api.bellwether.markets/mcpHeaders
X-API-Key
Optional API key for higher rate limits (anonymous free tier: 120 req/hr)