Bellwether

Connect Remote server

claude mcp add --transport http prediction-markets https://api.bellwether.markets/mcp --header "X-API-Key: <X_API_KEY>"

{
  "mcpServers": {
    "prediction-markets": {
      "url": "https://api.bellwether.markets/mcp",
      "headers": {
        "X-API-Key": "<X_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "prediction-markets": {
      "type": "http",
      "url": "https://api.bellwether.markets/mcp",
      "headers": {
        "X-API-Key": "<X_API_KEY>"
      }
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://api.bellwether.markets/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 3 found in our last check

• list_markets

  List open prediction markets across Kalshi and Polymarket (normalized).

• get_market

  Get one normalized market. venue is 'kalshi' or 'polymarket'.

• matching_markets

  Find the same real-world event on both venues, with the YES price spread.

Headers

Details

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