sslmon-mcp

sslmon-mcp

Domain registration and SSL certificate monitoring via Model Context Protocol.

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sslmon-mcp is a Model Context Protocol (MCP) compliant server that enables querying domain registration details and SSL certificate information for any given domain. It offers both HTTP-based remote service and a local NPX server for integration with AI tools and platforms. The tool helps automate security monitoring, domain lifecycle management, and certificate validity tracking via standardized API endpoints.

Key Features

Provides domain registration and expiration information
Retrieves SSL certificate validity and metadata
Supports MCP protocol for standardized AI integration
Available as HTTP remote server and local NPX command
Offers easy CLI integration for various AI platforms
Returns structured JSON responses
Monitors certificate and domain expiration dates
Fetches registrar and registrant details where available
Operates cross-platform (Windows, Mac, Linux)
Customizable via configuration files (JSON, TOML)

Use Cases

Automated security monitoring of domains
Tracking SSL certificate expiration for compliance
Managing domain portfolio and lifecycle
Integrating with AI agents for contextual awareness
Building custom alerts for domain or SSL issues
Ensuring regulatory compliance for web properties
Facilitating IT auditing and reporting of domains
Helping SaaS products monitor client SSL/domain status
Assisting DevOps teams in certificate management
Supporting research on domain registration patterns

README

Domain/HTTPS/SSL MCP Server

MCP npm version License: MIT Node.js

Languages: English | 中文 | 日本語

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.

🚀 Quick Start

HTTP (Remote MCP server)

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

NPX (Local MCP server)

Mac/Linux:

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

Windows:

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

Configuration (Local MCP server)

JSON
{
  "mcpServers": {
    "sslmon": {
      "command": "npx",
      "args": ["-y", "sslmon-mcp"],
      "env": {}
    }
  }
}
toml
[mcp_servers.sslmon]
command = "npx"
args = ["-y", "sslmon-mcp"]

✨ Features

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

🛠️ Available Tools

get_domain_info

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_cert_info

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

Star History

Star History Chart

Repository Owner

firesh
firesh

User

Repository Details

Language JavaScript
Default Branch main
Size 58 KB
Contributors 2
MCP Verified Nov 12, 2025

Programming Languages

JavaScript
100%

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