Kalshi Prediction Markets MCP Server

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add kalshi-mcp-server -e 'KALSHI_API_KEY_ID=<KALSHI_API_KEY_ID>' -- uvx kalshi-mcp-server

{
  "mcpServers": {
    "kalshi-mcp-server": {
      "command": "uvx",
      "args": [
        "kalshi-mcp-server"
      ],
      "env": {
        "KALSHI_API_KEY_ID": "<KALSHI_API_KEY_ID>"
      }
    }
  }
}

[mcp_servers.kalshi-mcp-server]
command = "uvx"
args = ["kalshi-mcp-server"]
env = { KALSHI_API_KEY_ID = "<KALSHI_API_KEY_ID>" }

{
  "mcpServers": {
    "kalshi-mcp-server": {
      "command": "uvx",
      "args": [
        "kalshi-mcp-server"
      ],
      "env": {
        "KALSHI_API_KEY_ID": "<KALSHI_API_KEY_ID>"
      }
    }
  }
}

{
  "servers": {
    "kalshi-mcp-server": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "kalshi-mcp-server"
      ],
      "env": {
        "KALSHI_API_KEY_ID": "<KALSHI_API_KEY_ID>"
      }
    }
  }
}

Put your own value in place of <KALSHI_API_KEY_ID> (Kalshi API key ID from https://kalshi.com/account/profile). The author’s registry entry marks it as required.

Optional settings from the registry entry, left out of the block above: KALSHI_PRIVATE_KEY_PATH (Filesystem path to the RSA private key PEM. Set this or KALSHI_PRIVATE_KEY_PEM), KALSHI_PRIVATE_KEY_PEM (Inline PEM contents, for hosted deploys without filesystem access), KALSHI_ENV (demo or prod. Defaults to demo for safety), KALSHI_ALLOW_PROD (Must be 1 for the server to start with KALSHI_ENV=prod. Defaults to 0), KALSHI_TRADING_ENABLED (Must be 1 for order-placement tools to operate. Read-only by default (0)).