Universal MCP Server

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

🤖 Setup Instructions

Claude Desktop

Add to your Claude Desktop config file:

{
  "mcpServers": {
    "*": {
      "url": "https://rtcdn.dev/en/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 Universal https://rtcdn.dev/en/mcp

ChatGPT (Custom GPT)

Quick setup:

Go to GPT Builder
Click Create → Configure → Actions
Click "Import from URL"
Enter: https://rtcdn.dev/en/mcp/openapi.yaml
Click Import and save

Or manually add the endpoint https://rtcdn.dev/en/mcp as an action.

🔧 Available Tools (13)

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?

lookup_as_whois: Lookup WHOIS information for an Autonomous System (AS) number from the RADB routing database. Returns routing policy, network information, and administrative contacts.

latest_lightning_channels: Get the latest Lightning Network channels.

lookup_lightning_channels_per_node: Lookup all Lightning Network channels for a given node by public key.

lookup_lightning_node: Lookup a Lightning Network node by public key.

get_recommended_lightning_peers: Get recommended Lightning Network peers for a given node. Returns a list of nodes that are currently peered with the specified node.

search_lightning_nodes_by_alias: Search for Lightning Network nodes by partial alias match. Returns a list of nodes whose aliases contain the search term (case-insensitive).