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Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants

Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants

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github.com/WhoisjsonDeveloper Tools0Updated 29w ago
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About Whois, Dns, Ssl, And Domain Availability Lookups For Ai Assistants

@whoisjson/mcp-server exposes domain lookup tools for AI assistants using the WhoisJSON API. It covers registration data, DNS records, SSL/TLS certificates, and registration availability.

Key features

  1. 01Retrieve domain WHOIS data
  2. 02Inspect DNS records
  3. 03Check SSL/TLS certificate details and validity
  4. 04Check domain registration availability

Use cases

  1. 01Review domain registration and nameserver details
  2. 02Inspect DNS configuration for a domain
  3. 03Check certificate validity or domain availability

MCP support

The MCP server exposes WHOIS, DNS, SSL, and domain availability lookups as tools to MCP clients. It requires a WhoisJSON API key.

#whois#dns#ssl#domain#security#mcp#api#lookup#network#pentest#threat-intelligence#domain-availability#certificate

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "whoisjson": {
      "command": "npx",
      "args": [
        "-y",
        "@whoisjson/mcp-server"
      ],
      "env": {
        "WHOISJSON_API_KEY": "<WHOISJSON_API_KEY>"
      }
    }
  }
}
Run commandnpx -y @whoisjson/mcp-server
Environment variables to set
WHOISJSON_API_KEYSecretYour WhoisJSON API key from whoisjson.com/dashboard

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npm@whoisjson/mcp-server1.0.3

Tools

4

Saved tool list · updated 3w ago

ParameterTypeRequiredDescription
domainstringYesDomain name to look up, e.g. "example.com". Do not include protocol or path.

Details

From the project README

@whoisjson/mcp-server

MCP (Model Context Protocol) server for the WhoisJSON API. Exposes WHOIS, DNS, SSL, and domain availability lookups as tools for AI assistants.

Tools

ToolDescription
whois_lookupWHOIS registration data for a domain (registrar, dates, contacts, nameservers…)
dns_lookupAll DNS records for a domain (A, AAAA, MX, NS, TXT, CNAME, SOA, CAA, DMARC…)
ssl_checkSSL/TLS certificate details and validity for a domain
domain_availabilityCheck if a domain is available for registration

Prerequisites

  1. Sign up at whoisjson.com and copy your API key from the dashboard.
  2. Node.js ≥ 18.

Installation

npm install -g @whoisjson/mcp-server
# or run directly with npx (no install needed):
npx @whoisjson/mcp-server

Configuration

Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or
%APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "whoisjson": {
      "command": "npx",
      "args": ["-y", "@whoisjson/mcp-server"],
      "env": {
        "WHOISJSON_API_KEY": "your_api_key_here"
      }
    }
  }
}
Cursor

Edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "whoisjson": {
      "command": "npx",
      "args": ["-y", "@whoisjson/mcp-server"],
      "env": {
        "WHOISJSON_API_KEY": "your_api_key_here"
      }
    }
  }
}
Windsurf

Edit ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "whoisjson": {
      "command": "npx",
      "args": ["-y", "@whoisjson/mcp-server"],
      "env": {
        "WHOISJSON_API_KEY": "your_api_key_here"
      }
    }
  }
}

Running locally (development)

cd mcp-server
npm install
npm run build
WHOISJSON_API_KEY=your_key npm start

Publishing

npm run build
npm publish --access public

API reference

Full API documentation: whoisjson.com/documentation

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