{
 "id": "dev.workers.mike-tusa.certguard/certguard",
 "name": "CertGuard",
 "description": "Free SSL/TLS certificate checker: expiry, chain trust, hostname match, TLS version, A/B/C/F grade.",
 "connect": {
  "transport": "streamable-http",
  "url": "https://certguard.mike-tusa.workers.dev/mcp"
 },
 "website": "https://certguard.mike-tusa.workers.dev/",
 "version": "0.2.0",
 "source": "official MCP registry (registry.modelcontextprotocol.io)",
 "reliability": {
  "verdict": "reliable",
  "attempts": 36,
  "successes": 36,
  "successRate": 1,
  "consecutiveSuccesses": 36,
  "lastStatus": "ok",
  "lastCheckedAt": "2026-10-20T01:01:02.056Z",
  "lastLatencyMs": 8471,
  "toolsAdvertised": 1,
  "method": "MCP initialize + tools/list from Faceabot, identified as FaceabotProbe/1.0 plus, when the server declares a read-only tool (readOnlyHint), one call of that tool with a neutral sample input to check it really returns a result. Servers on the 2026-07-28 MCP revision (no initialize handshake) get the same checks in that revision",
  "work": {
   "verdict": "not_working",
   "tool": "check_certificate",
   "attempts": 36,
   "successes": 0,
   "successRate": 0,
   "consecutiveSuccesses": 0,
   "lastStatus": "tool_error",
   "lastMs": 4303,
   "sampleInput": "{\"host\":\"example.com\"}",
   "method": "Faceabot calls one read-only tool (annotations.readOnlyHint) with a neutral sample input and checks that it returns a non-empty result without error."
  }
 },
 "details": "https://faceabot.com/api/catalog?id=dev.workers.mike-tusa.certguard%2Fcertguard",
 "page": "https://faceabot.com/tools/dev.workers.mike-tusa.certguard/certguard",
 "badge": {
  "image": "https://faceabot.com/badge/dev.workers.mike-tusa.certguard/certguard.svg",
  "markdown": "[![Measured by Faceabot](https://faceabot.com/badge/dev.workers.mike-tusa.certguard/certguard.svg)](https://faceabot.com/tools/dev.workers.mike-tusa.certguard/certguard)",
  "note": "Live reliability badge the publisher of this server can show on its README or website."
 },
 "recentChecks": [
  {
   "at": "2026-10-20T01:01:02.056Z",
   "ok": 1,
   "status": "ok",
   "ms": 8471,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-19T12:50:46.827Z",
   "ok": 1,
   "status": "ok",
   "ms": 8292,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-18T20:45:42.398Z",
   "ok": 1,
   "status": "ok",
   "ms": 5606,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-18T07:25:44.514Z",
   "ok": 1,
   "status": "ok",
   "ms": 5013,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-17T23:35:43.811Z",
   "ok": 1,
   "status": "ok",
   "ms": 5616,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-17T15:25:44.897Z",
   "ok": 1,
   "status": "ok",
   "ms": 6308,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-17T07:20:48.314Z",
   "ok": 1,
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  },
  {
   "at": "2026-10-16T23:35:49.348Z",
   "ok": 1,
   "status": "ok",
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   "f_status": "tool_error"
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  {
   "at": "2026-10-16T16:25:51.426Z",
   "ok": 1,
   "status": "ok",
   "ms": 5990,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-16T09:25:52.273Z",
   "ok": 1,
   "status": "ok",
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   "f_status": "tool_error"
  },
  {
   "at": "2026-10-16T02:31:16.932Z",
   "ok": 1,
   "status": "ok",
   "ms": 8868,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-15T19:35:56.773Z",
   "ok": 1,
   "status": "ok",
   "ms": 6969,
   "f_status": "tool_error"
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  {
   "at": "2026-10-15T12:51:01.292Z",
   "ok": 1,
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   "f_status": "tool_error"
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  {
   "at": "2026-10-15T06:15:30.856Z",
   "ok": 1,
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   "ms": 3964,
   "f_status": "tool_error"
  },
  {
   "at": "2026-10-14T23:45:31.216Z",
   "ok": 1,
   "status": "ok",
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   "f_status": "tool_error"
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  {
   "at": "2026-10-14T17:20:21.807Z",
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   "f_status": "tool_error"
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  {
   "at": "2026-10-14T10:50:34.857Z",
   "ok": 1,
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   "f_status": "tool_error"
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  {
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   "ok": 1,
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   "f_status": "tool_error"
  },
  {
   "at": "2026-10-13T21:40:58.969Z",
   "ok": 1,
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   "f_status": "tool_error"
  },
  {
   "at": "2026-10-13T15:35:51.418Z",
   "ok": 1,
   "status": "ok",
   "ms": 5647,
   "f_status": "tool_error"
  }
 ],
 "trust": {
  "access": "no sign-in needed",
  "tools": 1,
  "declaredReadOnly": 1,
  "declaredCanWrite": 0,
  "declaredDestructive": 0,
  "toolDefinitionsFingerprint": "6a84731a373ede35f16c246f359b65cc",
  "toolDefinitionsLastChangedAt": null,
  "toolDefinitionChangesSinceFirstSeen": 0,
  "firstSeenAt": "2026-10-17T23:35:43.974Z",
  "protocol": "2025-06-18",
  "warnings": [],
  "note": "Facts observed by Faceabot when it last read this server's tool list. 'Can write' counts tools not declared read-only (annotations are self-declared). A changed fingerprint means tool names, descriptions or schemas changed since Faceabot first saw them: re-check before trusting an earlier approval."
 }
}