{
 "id": "dev.workers.mike-tusa.headerguard/headerguard",
 "name": "HeaderGuard",
 "description": "Scan a website's HTTP security headers (HSTS, CSP, framing, COOP/CORP, cookies). Score + fixes.",
 "connect": {
  "transport": "streamable-http",
  "url": "https://headerguard.mike-tusa.workers.dev/mcp"
 },
 "website": "https://headerguard.mike-tusa.workers.dev/",
 "version": "0.4.0",
 "source": "official MCP registry (registry.modelcontextprotocol.io)",
 "reliability": {
  "verdict": "reliable",
  "attempts": 36,
  "successes": 36,
  "successRate": 1,
  "consecutiveSuccesses": 36,
  "lastStatus": "ok",
  "lastCheckedAt": "2026-10-20T00:35:43.482Z",
  "lastLatencyMs": 6385,
  "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": "proven_working",
   "tool": "scan_headers",
   "attempts": 36,
   "successes": 36,
   "successRate": 1,
   "consecutiveSuccesses": 36,
   "lastStatus": "ok",
   "lastMs": 3468,
   "sampleInput": "{\"url\":\"https://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.headerguard%2Fheaderguard",
 "page": "https://faceabot.com/tools/dev.workers.mike-tusa.headerguard/headerguard",
 "badge": {
  "image": "https://faceabot.com/badge/dev.workers.mike-tusa.headerguard/headerguard.svg",
  "markdown": "[![Measured by Faceabot](https://faceabot.com/badge/dev.workers.mike-tusa.headerguard/headerguard.svg)](https://faceabot.com/tools/dev.workers.mike-tusa.headerguard/headerguard)",
  "note": "Live reliability badge the publisher of this server can show on its README or website."
 },
 "recentChecks": [
  {
   "at": "2026-10-20T00:35:43.482Z",
   "ok": 1,
   "status": "ok",
   "ms": 6385,
   "f_status": "ok"
  },
  {
   "at": "2026-10-19T12:20:44.984Z",
   "ok": 1,
   "status": "ok",
   "ms": 8000,
   "f_status": "ok"
  },
  {
   "at": "2026-10-18T20:05:40.788Z",
   "ok": 1,
   "status": "ok",
   "ms": 5238,
   "f_status": "ok"
  },
  {
   "at": "2026-10-18T07:05:44.180Z",
   "ok": 1,
   "status": "ok",
   "ms": 6123,
   "f_status": "ok"
  },
  {
   "at": "2026-10-17T23:15:42.168Z",
   "ok": 1,
   "status": "ok",
   "ms": 5436,
   "f_status": "ok"
  },
  {
   "at": "2026-10-17T15:05:45.997Z",
   "ok": 1,
   "status": "ok",
   "ms": 6933,
   "f_status": "ok"
  },
  {
   "at": "2026-10-17T07:00:55.588Z",
   "ok": 1,
   "status": "ok",
   "ms": 7790,
   "f_status": "ok"
  },
  {
   "at": "2026-10-16T23:15:49.517Z",
   "ok": 1,
   "status": "ok",
   "ms": 3813,
   "f_status": "ok"
  },
  {
   "at": "2026-10-16T16:05:50.427Z",
   "ok": 1,
   "status": "ok",
   "ms": 7027,
   "f_status": "ok"
  },
  {
   "at": "2026-10-16T09:05:48.974Z",
   "ok": 1,
   "status": "ok",
   "ms": 3710,
   "f_status": "ok"
  },
  {
   "at": "2026-10-16T02:10:57.469Z",
   "ok": 1,
   "status": "ok",
   "ms": 4707,
   "f_status": "ok"
  },
  {
   "at": "2026-10-15T19:15:55.547Z",
   "ok": 1,
   "status": "ok",
   "ms": 5163,
   "f_status": "ok"
  },
  {
   "at": "2026-10-15T12:31:01.680Z",
   "ok": 1,
   "status": "ok",
   "ms": 3171,
   "f_status": "ok"
  },
  {
   "at": "2026-10-15T05:55:29.788Z",
   "ok": 1,
   "status": "ok",
   "ms": 3044,
   "f_status": "ok"
  },
  {
   "at": "2026-10-14T23:20:30.275Z",
   "ok": 1,
   "status": "ok",
   "ms": 3717,
   "f_status": "ok"
  },
  {
   "at": "2026-10-14T17:00:53.239Z",
   "ok": 1,
   "status": "ok",
   "ms": 6806,
   "f_status": "ok"
  },
  {
   "at": "2026-10-14T10:30:45.324Z",
   "ok": 1,
   "status": "ok",
   "ms": 3557,
   "f_status": "ok"
  },
  {
   "at": "2026-10-14T03:56:09.357Z",
   "ok": 1,
   "status": "ok",
   "ms": 5902,
   "f_status": "ok"
  },
  {
   "at": "2026-10-13T21:20:57.248Z",
   "ok": 1,
   "status": "ok",
   "ms": 6325,
   "f_status": "ok"
  },
  {
   "at": "2026-10-13T15:15:59.048Z",
   "ok": 1,
   "status": "ok",
   "ms": 7804,
   "f_status": "ok"
  }
 ],
 "trust": {
  "access": "no sign-in needed",
  "tools": 1,
  "declaredReadOnly": 1,
  "declaredCanWrite": 0,
  "declaredDestructive": 0,
  "toolDefinitionsFingerprint": "5db48757124f29713131e0f5c6deeeaa",
  "toolDefinitionsLastChangedAt": null,
  "toolDefinitionChangesSinceFirstSeen": 0,
  "firstSeenAt": "2026-10-17T23:15:42.366Z",
  "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."
 }
}