certdesk

Reliability

Status and outage history · Atom feed · Watch with other listings

How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "certdesk": {
      "type": "http",
      "url": "https://certdesk.dev/mcp"
    }
  }
}

7 tools

• check_certificate

  Check one domain's TLS certificate and return a verdict: status OK | WARN | CRITICAL | UNKNOWN, judged from the certificate chain the server actually serves. Measured from Korean point A (full chain and CRL revocation) plus Korean point B and an overseas point on the Globalping…

• check_expiry

  Verdict for up to 5 domains at once: status OK | WARN | CRITICAL | UNKNOWN per domain combining the served certificate (verification, days left, null when the server cannot be measured) and domain registration expiry (RDAP), plus Korean alert lines. Use this for inventories, CI…

• check_security

  Security posture check of a web server (no port scanning): TLS protocol support (legacy 1.0/1.1 detection via a Korean network probe), security headers (HSTS/CSP/X-Content-Type-Options/anti-clickjacking/Referrer-Policy), HTTP→HTTPS redirect, and certificate key/signature…

• check_dns

  DNS and hosting facts for a domain: nameservers with DNS provider, A/AAAA with IP owner (ASN), CNAME, MX, CAA (which CAs may issue), SPF/DMARC, DNSSEC, registrar and domain expiry (RDAP).

• check_dns_propagation

  Compare answers for one DNS record across resolvers: the authoritative nameservers, Korean ISPs (KT, SK Broadband, LG U+) and public resolvers (Cloudflare, Google, Quad9, OpenDNS), measured from a Korean network. Use it to confirm a TXT/CNAME for certificate domain validation…

• explain_tls_error

  Explain a TLS/SSL certificate error message from a browser, curl/OpenSSL, Java, Python, Node.js, Go or .NET: likely causes, fixes, and links to step-by-step guides (Korean). Works offline from a curated knowledge base.

• watch_expiry

  Subscribe an email address to free daily expiry monitoring of up to 5 domains (certificate, domain registration and security grade) with email alerts, plus an optional Slack/Discord/Telegram/webhook channel. Also alerts when Certificate Transparency logs show a new certificate…

Security scan

Recent checks