Polymarket MCP Server vs Polymarket Kalshi Trading

In-depth architectural comparison of the Polymarket MCP Server and Polymarket Kalshi Trading MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Polymarket MCP Server when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Polymarket MCP Server Details

Choose Polymarket Kalshi Trading when:

• You need dedicated capabilities in the Developer Tools domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Polymarket Kalshi Trading Details

Feature & Specification Comparison

Specification	Polymarket MCP Server Developer Tools	Polymarket Kalshi Trading Developer Tools
Summary	Self-hosted MCP server for AI agent trading on Polymarket prediction markets	Cross-venue prediction markets for AI agents: Polymarket + Kalshi, costed and attributed
Category & Scope	Developer Tools	Developer Tools

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "polymarket-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://your-server.com/mcp",
        "--header",
        "x-api-key: YOUR_API_KEY"
      ]
    }
  }
}

{
  "mcpServers": {
    "polymarket-kalshi-trading": {
      "command": "uvx",
      "args": [
        "oddsrail"
      ]
    }
  }
}

Related MCP Server Comparisons