WolfTech DNS MCP Server

An MCP (Model Context Protocol) server that provides DNS lookup and email authentication diagnostic tools. Built for use with Claude Desktop, Claude Code, and any MCP-compatible client.

Tools

All tools accept an optional dns_server parameter (default 8.8.8.8) for querying specific resolvers or checking propagation.

Related MCP server: mailX tools

Requirements

• Python 3.13+

• uv

Installation

Claude Code

Add to .claude/.mcp.json:

{
  "mcpServers": {
    "wolftech-dns": {
      "command": "uv",
      "args": [
        "run",
        "--project",
        "/path/to/wolftech-dns-mcp",
        "--with", "fastmcp",
        "--with", "dnspython",
        "fastmcp", "run",
        "/path/to/wolftech-dns-mcp/server.py"
      ]
    }
  }
}

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "wolftech-dns": {
      "command": "uv",
      "args": [
        "run",
        "--project",
        "/path/to/wolftech-dns-mcp",
        "--with", "fastmcp",
        "--with", "dnspython",
        "fastmcp", "run",
        "/path/to/wolftech-dns-mcp/server.py"
      ]
    }
  }
}

Replace /path/to/wolftech-dns-mcp with the actual path to the cloned repository.

Usage Examples

Once configured, the tools are available to Claude as MCP tools:

• "Look up the A records for example.com" - uses dns_lookup

• "Check the SPF record for mydomain.com" - uses spf_check

• "Run a full email DNS health check on mydomain.com" - uses domain_health

• "Check if selector1 DKIM is set up for mydomain.com" - uses dkim_check

• "Do a reverse DNS lookup on 74.140.194.162" - uses reverse_dns

• "Check MX records for mydomain.com using Cloudflare DNS" - uses mx_check with dns_server: "1.1.1.1"

Stack

• FastMCP - MCP server framework

• dnspython - DNS toolkit for Python

• Transport: stdio