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Live Kalshi + Polymarket prediction-market data and cross-venue arbitrage spreads, one schema.
npx @getmcp/cli add markets.bellwether/prediction-marketsRequires Node.js 18+. Community-contributed server. Review source before installing.
Config file: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"markets.bellwether/prediction-markets": {
"url": "https://api.bellwether.markets/mcp",
"transport": "streamable-http",
"headers": {
"X-API-Key": ""
}
}
}
}