MCP Integration

Search for IP or hostnames:

This is a public HTTP streaming implementation of the Model Context Protocol (MCP) for https://dns.ninja

Endpoint: https://mcp.dns.ninja/mcp

You can try it out directly on ChatGPT as a GPT

🤖 Setup Instructions

Claude Desktop

Add to your Claude Desktop config file:

{ "mcpServers": { "ninja": { "url": "https://mcp.dns.ninja/mcp" } } }
📍 Config file location
  • Windows:%APPDATA%\Claude\config.json
  • macOS:~/Library/Application Support/Claude/config.json
  • Linux:~/.config/Claude/config.json

Claude Code (Terminal)

Run this command:

claude mcp add --transport http ninja https://mcp.dns.ninja/mcp

ChatGPT (Custom GPT)

Quick setup:

  1. Go to GPT Builder
  2. Click Create → Configure → Actions
  3. Click "Import from URL"
  4. Enter: https://mcp.dns.ninja/mcp/openapi.yaml
  5. Click Import and save

Or manually add the endpoint https://mcp.dns.ninja/mcp as an action.

Note: After adding the configuration, restart your Claude application for changes to take effect.

🔧 Available Tools (6)

  • rbls: Lookup real time blocklists for IP numbers.
  • lookup_dns: Lookup DNS records for a given hostname.
  • reverse_lookup_dns_records: Find hostnames that use a specific DNS record value. Query which hostnames point to an IP address, use a particular nameserver, or reference any DNS value. For example: 'which hostnames point to 1.2.3.4?' or 'which hostnames use chris.ns.cloudflare.com as their nameserver?'
  • reverse_lookup_mx: Find hostnames that use a specific mail server. For example: which hostnames use aspmx.l.google.com as their mail server?
  • reverse_lookup_ns: Find hostnames that use a specific nameserver. For example: which hostnames use chris.ns.cloudflare.com as their nameserver?
  • reverse_lookup_ip: Find hostnames that point to a specific IP address (IPv4 or IPv6). Searches both A and AAAA records. For example: which hostnames point to 1.2.3.4?

🔗 More Information