MCP Server

Bellwether MCP Server

markets.bellwether/prediction-markets

What is the Bellwether MCP server?

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

Copy-paste configuration for popular MCP clients.

transport: http

Config generated by PluginBench — verify against the source before use.

Environment / auth

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

~/.cursor/mcp.json

{
  "mcpServers": {
    "prediction-markets": {
      "url": "https://api.bellwether.markets/mcp"
    }
  }
}

Matched Kalshi and Polymarket markets across sports, crypto, weather, and economics over MCP.

Active

x402-paid analytics, market intelligence, research, and LLM inference for AI agents.

MIT

Polymarket & Kalshi whale trades, ranked traders, backtesting and Autopilot. $15/mo.

Active

The risk officer for AI-assisted trading: enforced exit rules, cooling-off, and public receipts.

The club where your agent goes to work: paid for what it knows and does. No wallet to walk in.

Hosted Google Ads MCP with OAuth, bounded reads, and prepare/confirm writes.