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A Model Context Protocol (MCP) server that provides domain registration information and SSL certificate monitoring capabilities. Perfect for security monitoring, domain management, and certificate lifecycle tracking.

Mac/Linux:

# Add to Claude Desktop
claude mcp add sslmon -- npx -y sslmon-mcp

Windows:

# Add to Claude Desktop
claude mcp add sslmon -- cmd /c npx -y sslmon-mcp

{
  "mcpServers": {
    "shared-server": {
      "command": "npx",
      "args": ["-y", "sslmon-mcp"],
      "env": {}
    }
  }
}

• 🔍 Domain Registration Info - Get domain registration and expiration dates
• 🔒 SSL Certificate Info - Check SSL certificate validity periods and details

Get domain registration and expiration information.

Parameters:

• domain (string, required): The top-level domain to check (e.g., "example.com")

Returns: JSON object with:

• domain: The queried domain
• registrationDate: Domain registration date
• expirationDate: Domain expiration date
• registrar: Domain registrar name
• registrant: Domain registrant information (when available)
• status: Domain status

Get SSL certificate information and validity status for any domain.

Parameters:

• domain (string, required): The domain to check SSL certificate for
• port (number, optional): Port number to check (default: 443)

Returns: JSON object with:

• domain: The queried domain
• validFrom: Certificate valid from date (ISO string)
• validTo: Certificate valid to date (ISO string)
• issuer: Certificate issuer
• subject: Certificate subject
• isValid: Boolean indicating if certificate is currently valid
• daysUntilExpiry: Number of days until certificate expires