MCP Server

Model Context Protocol server for ThetaDataDx. Gives any LLM instant access to 64 ThetaData tools via JSON-RPC 2.0 over stdio.

Installation

cargo install thetadatadx-mcp --git https://github.com/userFRM/ThetaDataDx

Configuration

Claude Code

Add to .claude/settings.json:

{
  "mcpServers": {
    "thetadata": {
      "command": "thetadatadx-mcp",
      "env": {
        "THETA_EMAIL": "you@example.com",
        "THETA_PASSWORD": "your-password"
      }
    }
  }
}

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "thetadata": {
      "command": "thetadatadx-mcp",
      "env": {
        "THETA_EMAIL": "you@example.com",
        "THETA_PASSWORD": "your-password"
      }
    }
  }
}

WARNING

Store credentials in environment variables or a secrets manager rather than committing them to config files in version control.

Available Tools (64)

61 data endpoints + ping + all_greeks + implied_volatility = 64 tools.

Category	Count
Meta	1 (ping)
Offline Greeks	2 (all_greeks, implied_volatility)
Stock	14
Option	34
Index	9
Calendar & Rates	4

Offline Mode

Without credentials, only ping, all_greeks, and implied_volatility are available. This is useful for testing MCP integration or computing Greeks without a ThetaData subscription.

Logging

RUST_LOG=debug thetadatadx-mcp       # verbose
RUST_LOG=warn thetadatadx-mcp        # quiet

TIP

All logs go to stderr. Stdout is reserved for JSON-RPC communication. This means you can safely redirect logs without interfering with the MCP protocol.