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Kalshi Prediction Markets

io.github.cejor6/kalshi-mcp-server ยท v0.1.8

MCP server for Kalshi prediction markets: native RSA-PSS auth, rate limiting, demo/prod safety.

Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add kalshi-mcp-server -e KALSHI_API_KEY_ID=<KALSHI_API_KEY_ID> -e KALSHI_PRIVATE_KEY_PATH=<KALSHI_PRIVATE_KEY_PATH> -e KALSHI_PRIVATE_KEY_PEM=<KALSHI_PRIVATE_KEY_PEM> -e KALSHI_ENV=<KALSHI_ENV> -e KALSHI_ALLOW_PROD=<KALSHI_ALLOW_PROD> -e KALSHI_TRADING_ENABLED=<KALSHI_TRADING_ENABLED> -- uvx kalshi-mcp-server==0.1.8
claude_desktop_config.json
{
  "mcpServers": {
    "kalshi-mcp-server": {
      "command": "uvx",
      "args": [
        "kalshi-mcp-server==0.1.8"
      ],
      "env": {
        "KALSHI_API_KEY_ID": "<KALSHI_API_KEY_ID>",
        "KALSHI_PRIVATE_KEY_PATH": "<KALSHI_PRIVATE_KEY_PATH>",
        "KALSHI_PRIVATE_KEY_PEM": "<KALSHI_PRIVATE_KEY_PEM>",
        "KALSHI_ENV": "<KALSHI_ENV>",
        "KALSHI_ALLOW_PROD": "<KALSHI_ALLOW_PROD>",
        "KALSHI_TRADING_ENABLED": "<KALSHI_TRADING_ENABLED>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "kalshi-mcp-server": {
      "command": "uvx",
      "args": [
        "kalshi-mcp-server==0.1.8"
      ],
      "env": {
        "KALSHI_API_KEY_ID": "<KALSHI_API_KEY_ID>",
        "KALSHI_PRIVATE_KEY_PATH": "<KALSHI_PRIVATE_KEY_PATH>",
        "KALSHI_PRIVATE_KEY_PEM": "<KALSHI_PRIVATE_KEY_PEM>",
        "KALSHI_ENV": "<KALSHI_ENV>",
        "KALSHI_ALLOW_PROD": "<KALSHI_ALLOW_PROD>",
        "KALSHI_TRADING_ENABLED": "<KALSHI_TRADING_ENABLED>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "kalshi-mcp-server": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "kalshi-mcp-server==0.1.8"
      ],
      "env": {
        "KALSHI_API_KEY_ID": "<KALSHI_API_KEY_ID>",
        "KALSHI_PRIVATE_KEY_PATH": "<KALSHI_PRIVATE_KEY_PATH>",
        "KALSHI_PRIVATE_KEY_PEM": "<KALSHI_PRIVATE_KEY_PEM>",
        "KALSHI_ENV": "<KALSHI_ENV>",
        "KALSHI_ALLOW_PROD": "<KALSHI_ALLOW_PROD>",
        "KALSHI_TRADING_ENABLED": "<KALSHI_TRADING_ENABLED>"
      }
    }
  }
}

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

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
KALSHI_API_KEY_ID
Required		Kalshi API key ID from https://kalshi.com/account/profile
KALSHI_PRIVATE_KEY_PATH
Optional		Filesystem path to the RSA private key PEM. Set this or KALSHI_PRIVATE_KEY_PEM.
KALSHI_PRIVATE_KEY_PEM
Optional, secret		Inline PEM contents, for hosted deploys without filesystem access.
KALSHI_ENV
Optional		demo or prod. Defaults to demo for safety.
KALSHI_ALLOW_PROD
Optional		Must be 1 for the server to start with KALSHI_ENV=prod. Defaults to 0.
KALSHI_TRADING_ENABLED
Optional		Must be 1 for order-placement tools to operate. Read-only by default (0).

Details

Package[email protected] (PYPI, stdio)
Packageghcr.io/cejor6/kalshi-mcp-server:0.1.8 (OCI, stdio)
First published31 May 2026
Last updated31 May 2026
Registry nameio.github.cejor6/kalshi-mcp-server

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