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Bellwether

Live Kalshi + Polymarket prediction-market data and cross-venue arbitrage spreads, one schema.

markets.bellwether/prediction-markets
Version0.1.0latest catalog version
ConnectionRemotestreamable-http
PublishedJul 03, 2026catalog
UpdatedJul 03, 2026catalog
Overview

What this server provides

Live Kalshi + Polymarket prediction-market data and cross-venue arbitrage spreads, one schema.

Connect

Remote endpoints

1
Remote endpoint 1streamable-http
https://api.bellwether.markets/mcp
Open endpoint
  • X-API-Key

    Optional API key for higher rate limits (anonymous free tier: 120 req/hr)

    Optional
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