dev.certdesk/certdesk

up checked 2026-11-11T06:39:34.510Z

Unclaimed · Unverified

Publisher-provided title

certdesk

Publisher-provided description

TLS cert verdict (OK/WARN/CRITICAL/UNKNOWN) from the served chain: expiry, revocation, alerts

Summary by lookupd

Checks TLS certificate status, expiry, DNS and security headers for domains, and can subscribe an email address to daily expiry alerts.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http certdesk https://certdesk.dev/mcp

Codex, remote (streamable-http)

codex mcp add certdesk --url https://certdesk.dev/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Publisher-provided text

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. Me
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 s
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/CS
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, registra
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, Goog
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 gui
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 o

Shows this live status and links here; updates hourly.

[![lookupd status](https://lookupd.com/badge/dev.certdesk/certdesk.svg)](https://lookupd.com/servers/dev.certdesk/certdesk)