SSL Certificate Check MCP Server

by powmcp Your server? Claim it

answering

SSL Certificate Check is answering right now. Last checked 8 min ago. It exposes 1 tools. Last commit 22 Sep 2026.

Inspect one endpoint's served certificate, expiry, hostname coverage, and accepted TLS versions.

Uptime history 55 days of history · worst day 95%

55 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

476 ms

Response time

average over 24h

Stars

last commit 22 Sep 2026

Nothing serious here today

Today is the operative word: we check SSL Certificate Check every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add ssl-certificate-check --transport http https://powmcp.com/ssl-certificate-check/mcp

Settings → Connectors → Add custom connector, then paste this address

https://powmcp.com/ssl-certificate-check/mcp

~/.codex/config.toml

[mcp_servers.ssl-certificate-check]
url = "https://powmcp.com/ssl-certificate-check/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "ssl-certificate-check": {
      "url": "https://powmcp.com/ssl-certificate-check/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "ssl-certificate-check": {
      "type": "http",
      "url": "https://powmcp.com/ssl-certificate-check/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

ssl

ssl_check

Opens its own TLS handshakes to one public host with openssl, using the URL's explicit port or 443 by default, and reports what they establish: which of TLS 1.3, TLS 1.2, TLS 1.1, TLS 1.0 and SSLv3 the server accepts, a protocol-support grade, and the certificate the server actually serves (subject, issuer, covered hostnames, hostname match, and validity dates). Reach for it on padlock, HTTPS, 'Not Secure', certificate-expiry and wrong-hostname questions, and to inspect which certificate is served after a renewal on the probed endpoint; this does not verify every load-balanced node. It does not fetch the page or establish whether plain HTTP is actually served or redirected, and it is not a browser trust decision: no chain-of-trust build, no revocation check, no cipher-suite inspection. Measured 0.05-1.5 seconds against real hosts; each probe is cut off at 12 seconds.

Endpoints

URL	Transport	State	Latency	Checked
https://powmcp.com/ssl-certificate-check/mcp	streamable-http	answering	438 ms	8 min ago

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SSL Certificate Check — questions

Answers built from our own checks of this server.

What can SSL Certificate Check do?

It exposes 1 tools, read directly from the server on our last check. Among them: ssl_check. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is SSL Certificate Check working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 476 ms. The bar chart above shows every period we have measured.

How do I connect SSL Certificate Check?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does SSL Certificate Check need an API key?

No. SSL Certificate Check completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is SSL Certificate Check?

It answers our handshake in 476 ms on average, which is faster than 26% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is SSL Certificate Check open source?

The code is open source: it is published under the MIT licence and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at powmcp.com, which runs on its operator's own terms.