SSL Checker API MCP Server

by br0ski777 Your server? Claim it

not responding

SSL Checker API is listed as active in the registry but did not answer our last check. It exposes 1 tools. Last commit 2 Sep 2026.

SSL certificate check â€” validity, expiry, issuer, chain, grade. x402 micropayment.

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

55 ms

Response time

average over 24h

Stars

last commit 2 Sep 2026

SSL Checker API does not always answer

Over the last week it answered 30.5% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add ssl-checker --transport http https://ssl-checker.api.klymax402.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "ssl-checker": {
      "url": "https://ssl-checker.api.klymax402.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.ssl-checker]
url = "https://ssl-checker.api.klymax402.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "ssl-checker": {
      "url": "https://ssl-checker.api.klymax402.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "ssl-checker": {
      "url": "https://ssl-checker.api.klymax402.com/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.

security

security_check_ssl

Use this when you need to check if a domain's SSL/TLS certificate is valid, when it expires, and who issued it. Returns structured certificate data in JSON. Returns: 1. valid (boolean) 2. expiryDate and daysRemaining 3. issuer (name, organization, country) 4. subject (CN, alt names) 5. protocol (TLS version) 6. securityGrade (A+ to F) 7. certificate chain details. Example output: {"domain":"example.com","valid":true,"expiryDate":"2026-12-15","daysRemaining":245,"issuer":{"name":"DigiCert","organization":"DigiCert Inc"},"protocol":"TLSv1.3","securityGrade":"A+"} Use this BEFORE deploying a website, FOR monitoring certificate expiration, auditing security posture, and validating HTTPS setup. Do NOT use for DNS lookup -- use network_lookup_dns instead. Do NOT use for HTTP headers analysis -- use network_analyze_headers instead. Do NOT use for port scanning -- use network_scan_ports instead.

Endpoints

URL	Transport	State	Latency	Checked
https://ssl-checker.api.klymax402.com/mcp	sse	answering	55 ms	11 min ago

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SSL Checker API — questions

Answers built from our own checks of this server.

What can SSL Checker API do?

It exposes 1 tools, read directly from the server on our last check. Among them: security_check_ssl. 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 Checker API working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 55 ms. The bar chart above shows every period we have measured.

The registry lists SSL Checker API as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect SSL Checker API?

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

Does SSL Checker API need an API key?

No. SSL Checker API 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.

Is SSL Checker API open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.