Official MCP RegistryListed
certdesk
TLS cert verdict (OK/WARN/CRITICAL/UNKNOWN) from the served chain: expiry, revocation, alerts
First seen 2 Oct 2026. Evidence as of 3 Oct 2026.
7
Tools
From an anonymous probe
1
Source listings
Each with its own history
1
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| check_certificate | Check one domain's TLS certificate in depth: expiry and days left for the certificate the server actually serves (measured from a Korean network, CT logs as fallback), whether a newer certificate exists in CT logs but is not deployed, live TLS verification from a global PoP and from Korea, certificate chain (leaf → intermediates → root), revocation, SAN list, and recent incident history of the issuing CA. | Read-only |
| 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). | Read-only |
| 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 (e.g. _acme-challenge) has propagated. | Read-only |
| check_expiry | Expiry summary for up to 5 domains at once: served certificate expiry and issuer, undeployed newer certificate in CT logs, domain registration expiry (RDAP), and alert lines (Korean). Use this for inventories and periodic checks. | Read-only |
| 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 strength. Returns per-item pass/warn/fail and an overall grade. | Read-only |
| 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. | Read-only |
| 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. Double opt-in: a confirmation email is sent and monitoring starts only after the recipient clicks the link. Use only an address the user owns and explicitly asked to use. | Changes data |
Change history
- Description changed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | dev.certdesk/certdesk | 2 Oct 2026 | 3 Oct 2026 | 2 |