The certdesk MCP server,
connected in one click.
TLS cert verdict (OK/WARN/CRITICAL/UNKNOWN) from the served chain: expiry, revocation, alerts. Connect the official certdesk MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add certdesk to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http certdesk https://certdesk.dev/mcpRun in your terminal, then restart Claude Code.
certdesk · https://certdesk.dev/mcp
What your AI can do with certdesk
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “check_certificate”: Check one domain's TLS certificate and return a verdict: status OK | WARN | CRITICAL | UNKNOWN, judged from the certificate chain the server.”
“Use “check_expiry”: Verdict for up to 5 domains at once: status OK | WARN | CRITICAL | UNKNOWN per domain combining the served certificate (verification, days l.”
“Use “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), secur.”
“Use “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/DMA.”
How secure is the certdesk MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how certdesk holds up.
Security grade B
gate scanned 7 tools on Oct 12, 2026. A few things are worth a look before you connect.
- mediumwatch_expiry: References secrets or data exfiltration
Official endpoint
Operated by certdesk (certdesk.dev) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If certdesk adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick certdesk
Choose certdesk in the gate directory. No sign-in needed.
Use it anywhere
certdesk's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools certdesk exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
check_certificate — Check one domain's TLS certificate and return a verdict: status OK | WARN | CRITICAL | UNKNOWN, judged from the certificate chain the server
check_expiry — Verdict for up to 5 domains at once: status OK | WARN | CRITICAL | UNKNOWN per domain combining the served certificate (verification, days l
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), secur
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/DMA
check_dns_propagation — Compare answers for one DNS record across resolvers — the authoritative nameservers, Korean ISPs (KT, SK Broadband, LG U+) and public resolv
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
watch_expiry — Subscribe an email address to free daily expiry monitoring of up to 5 domains (certificate, domain registration and security grade) with ema
Who runs the certdesk MCP server?
The certdesk MCP server at a glance
https://certdesk.dev/mcpQuestions, answered
Is there an official certdesk MCP server?
Yes — certdesk operates its own remote MCP server at certdesk.dev. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect certdesk to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick certdesk in the directory. No account or sign-in is needed. From then on, certdesk's tools are available in every client you've connected to gate.
Do I need to host anything?
No. certdesk runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the certdesk MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect certdesk in minutes. No credit card required.
Connect more than just certdesk
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up certdesk in: Claude · Claude Code · ChatGPT · Cursor · VS Code