Official MCP RegistryHosted serverapi.bellwether.markets

Bellwether

Live Kalshi and Polymarket prediction-market data with cross-venue arbitrage spreads.

Connect to Claude Code

Copy

claude mcp add --transport http bellwether https://api.bellwether.markets/mcp

Vendor-hosted remote server: nothing to install locally. If it uses OAuth, Claude opens the vendor login on first use.

Endpoints

Published in the official MCP registry as “Bellwether”. Verified through the vendor namespace.