Cross-venue prediction markets for AI agents: Polymarket + Kalshi, costed and attributed
Install
Run one of the commands below, then add the client config underneath.
uvx oddsrailhttps://mcp.oddsrail.app/mcpClient configuration
Paste into Claude Desktop, Cursor (mcp.json), VS Code or any MCP client, then restart the client.
{
"mcpServers": {
"polymarket-kalshi-trading": {
"command": "uvx",
"args": [
"oddsrail"
]
}
}
}About this server
Polymarket Kalshi Trading is listed in the AI Agents category of the MCPNav directory. It is distributed as Python, Streamable HTTP and can be loaded by any client that speaks the Model Context Protocol.
Typical uses include giving your assistant scoped access to the corresponding service so it can answer questions and take actions with real data instead of guessing. Always review what a server can access before you enable it — see our MCP security guide.
Frequently asked questions
What is the Polymarket Kalshi Trading MCP server?＋
Polymarket Kalshi Trading is an MCP server by oddsrail. Cross-venue prediction markets for AI agents: Polymarket + Kalshi, costed and attributed
How do I install Polymarket Kalshi Trading?＋
Install it with: uvx oddsrail. Then add the JSON config to your client's MCP settings and restart the client.
Is Polymarket Kalshi Trading free to use?＋
The MCP server itself is free to install. The source is public on https://github.com/hmesutozsoy/oddsrail. Any third-party API it calls (such as a search or maps API) may require its own key and billing.
Which clients support Polymarket Kalshi Trading?＋
Any MCP-compatible client can use it, including Claude Desktop, Cursor, VS Code, Windsurf and custom agents.