MCP Server

DNSDumpster MCP Server for querying DNS information

Local serverstdioPython

What is the MCP MCP server?

DNSDumpster MCP Server for querying DNS information. Exposed over MCP by the mcp mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.

What it actually does

A Model Context Protocol (MCP) server for interacting with the DNSDumpster API, enabling AI assistants to perform detailed DNS reconnaissance through natural language requests.

  • Query domain DNS records through AI assistants
  • Retrieve detailed information about:
  • A records (with associated IP and ASN information)
  • CNAME records
  • Banner information where available
  • Support for pagination (Plus accounts)

Adding it to your client

Installation goes through your MCP client rather than a global install: point it at mcp-dnsdumpster on PyPI and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

Configuration

You will need one environment variable: DNSDUMPSTER_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

When to reach for it

Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes.

This entry was verified against MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Caveats

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the mcp mcp server does with a few real requests.

How to install the MCP MCP server

{
  "mcpServers": {
    "dnsdumpster": {
      "command": "uvx",
      "args": ["mcp-dnsdumpster"],
      "env": {
        "DNSDUMPSTER_API_KEY": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
DNSDUMPSTER_API_KEYCredential the server authenticates with.Yes

Frequently asked questions

It connects MCP to MCP-compatible AI assistants such as Claude and Cursor. Instead of copying data back and forth by hand, the assistant works with MCP directly.