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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.

• Name: sslmon
• URL: https://sslmon.dev/mcp

# Claude Code claude mcp add -t http sslmon https://sslmon.dev/mcp # Gemini CLI gemini mcp add -t http sslmon https://sslmon.dev/mcp # Qwen Code qwen mcp add -t http sslmon https://sslmon.dev/mcp # Codex codex mcp add sslmon --url https://sslmon.dev/mcp

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

[mcp_servers.sslmon] command = "npx" args = ["-y", "sslmon-mcp"]

• 🔍 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
• daysUntilExpiry: Number of days until domain expires

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