SSL Monitor MCP Server

The sslmon MCP server is a lightweight, yet powerful tool that bridges the gap between domain management and AI‑driven workflows. It exposes two core capabilities—domain registration lookup and SSL certificate inspection—through a simple HTTP interface that Claude, Gemini, Qwen, or any MCP‑compliant assistant can consume. By turning static domain data into structured JSON responses, the server enables rapid, programmatic checks that would otherwise require manual queries to WHOIS services or SSL inspection utilities.

At its heart, sslmon solves a common pain point for security teams and dev‑ops engineers: keeping track of domain lifecycles and certificate health without juggling multiple services. A single query returns registration dates, registrar details, and the number of days remaining until expiration. Similarly, SSL checks report validity periods, issuer information, and an immediate boolean flag indicating whether the certificate is currently trustworthy. This consolidation eliminates the need for separate WHOIS lookups, SSL scanning tools, and custom parsing logic, allowing AI assistants to provide instant, actionable insights within chat or automation scripts.

Key features are deliberately straightforward yet highly valuable:

• Domain Registration Info – Retrieve registration and expiration dates, registrar, registrant, status, and days‑to‑expiry in one call.
• SSL Certificate Info – Inspect any domain’s certificate, including validity window, issuer, subject, and days until the next renewal.
• Port Flexibility – Optionally specify a non‑standard port for SSL checks, covering services that run HTTPS on custom ports.
• JSON Output – Consistent, machine‑readable responses that integrate seamlessly into downstream pipelines or conversational replies.

Real‑world scenarios where sslmon shines include:

• Security Audits – Quickly verify that all domains in a portfolio have valid certificates and are not approaching expiration.
• Compliance Monitoring – Automate checks against regulatory requirements that mandate up‑to‑date SSL certificates and domain registration records.
• Incident Response – Detect expired or misissued certificates in real time, triggering alerts or remediation workflows.
• Developer Tooling – Embed domain and SSL checks into CI/CD pipelines, ensuring that deployments only proceed when certificates are healthy.

Integrating sslmon into an AI workflow is effortless. A conversational assistant can invoke the or tools, parse the returned JSON, and present concise summaries to users. For example, a user might ask, “When does example.com expire?” and the assistant will query , interpret the field, and reply with a clear countdown. Because the server is available both as a hosted HTTP endpoint and a local npm package, teams can choose the deployment model that best fits their security posture.

What sets sslmon apart is its focus on two critical, often overlooked aspects of web infrastructure—domain lifecycle and SSL health—and the ease with which these can be queried by an AI assistant. By providing ready‑made, structured data through a standard MCP interface, sslmon empowers developers and security professionals to build smarter, more proactive systems without reinventing the wheel.