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CertGuard

dev.workers.mike-tusa.certguard/certguard · v0.3.0

Free SSL/TLS certificate checker: expiry, chain trust, hostname match, TLS version, A/B/C/F grade.

Connect Remote server

Terminal
claude mcp add --transport http certguard https://certguard.mike-tusa.workers.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "certguard": {
      "url": "https://certguard.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "certguard": {
      "type": "http",
      "url": "https://certguard.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://certguard.mike-tusa.workers.dev/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 1 found in our last check

  • check_certificate

    Run a live TLS handshake against host:port and audit the certificate the server presents. Returns an A/B/C/F grade and summary, expiry (days remaining), hostname match, chain completeness and trust against Mozilla's root store, negotiated TLS version and cipher suite, key type/s…

Headers

NameDescription
Authorization
Optional, secret
Optional. 'Bearer <key>' (free cg_ key) for higher limits. Works without a key.

Details

Endpointhttps://certguard.mike-tusa.workers.dev/mcp (Streamable HTTP)
First published1 Nov 2026
Last updated1 Nov 2026
Registry namedev.workers.mike-tusa.certguard/certguard

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