{
 "id": "com.mcpcalc/calculator",
 "name": "calculator",
 "description": "Calculators accessible via MCP with real-time collaborative sessions and shareable URLs.",
 "connect": {
  "transport": "streamable-http",
  "url": "https://mcpcalc.com/api/v1/mcp"
 },
 "website": null,
 "version": "1.1.0",
 "source": "official MCP registry (registry.modelcontextprotocol.io)",
 "reliability": {
  "verdict": "reliable",
  "attempts": 43,
  "successes": 43,
  "successRate": 1,
  "consecutiveSuccesses": 43,
  "lastStatus": "ok",
  "lastCheckedAt": "2026-10-19T22:00:43.717Z",
  "lastLatencyMs": 7108,
  "toolsAdvertised": 10,
  "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_tested",
   "note": "Faceabot has not run a real task on this server yet (it only tests tools that declare themselves read-only)."
  }
 },
 "details": "https://faceabot.com/api/catalog?id=com.mcpcalc%2Fcalculator",
 "page": "https://faceabot.com/tools/com.mcpcalc/calculator",
 "badge": {
  "image": "https://faceabot.com/badge/com.mcpcalc/calculator.svg",
  "markdown": "[![Measured by Faceabot](https://faceabot.com/badge/com.mcpcalc/calculator.svg)](https://faceabot.com/tools/com.mcpcalc/calculator)",
  "note": "Live reliability badge the publisher of this server can show on its README or website."
 },
 "recentChecks": [
  {
   "at": "2026-10-19T22:00:43.717Z",
   "ok": 1,
   "status": "ok",
   "ms": 7108,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-19T09:35:43.673Z",
   "ok": 1,
   "status": "ok",
   "ms": 7600,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-18T16:40:43.086Z",
   "ok": 1,
   "status": "ok",
   "ms": 7274,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-18T05:20:41.027Z",
   "ok": 1,
   "status": "ok",
   "ms": 6666,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-17T21:25:39.144Z",
   "ok": 1,
   "status": "ok",
   "ms": 5731,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-17T12:55:42.065Z",
   "ok": 1,
   "status": "ok",
   "ms": 7207,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-17T05:15:46.677Z",
   "ok": 1,
   "status": "ok",
   "ms": 9569,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-16T21:35:47.389Z",
   "ok": 1,
   "status": "ok",
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   "f_status": "no_safe_tool"
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  {
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   "ok": 1,
   "status": "ok",
   "ms": 5678,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-16T07:31:07.586Z",
   "ok": 1,
   "status": "ok",
   "ms": 8714,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-16T00:40:52.161Z",
   "ok": 1,
   "status": "ok",
   "ms": 6663,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-15T17:46:26.642Z",
   "ok": 1,
   "status": "ok",
   "ms": 8056,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-15T11:01:06.674Z",
   "ok": 1,
   "status": "ok",
   "ms": 4527,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-15T04:30:29.297Z",
   "ok": 1,
   "status": "ok",
   "ms": 3659,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-14T22:05:14.633Z",
   "ok": 1,
   "status": "ok",
   "ms": 6315,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-14T15:35:17.473Z",
   "ok": 1,
   "status": "ok",
   "ms": 8402,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-14T09:10:32.172Z",
   "ok": 1,
   "status": "ok",
   "ms": 3221,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-14T02:26:10.725Z",
   "ok": 1,
   "status": "ok",
   "ms": 7750,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-13T20:15:54.135Z",
   "ok": 1,
   "status": "ok",
   "ms": 6934,
   "f_status": "no_safe_tool"
  },
  {
   "at": "2026-10-13T14:10:50.570Z",
   "ok": 1,
   "status": "ok",
   "ms": 5728,
   "f_status": "no_safe_tool"
  }
 ],
 "trust": {
  "access": "no sign-in needed",
  "tools": 10,
  "declaredReadOnly": 0,
  "declaredCanWrite": 10,
  "declaredDestructive": 0,
  "toolDefinitionsFingerprint": "733b44263eae3966a2f7189b2c76adc8",
  "toolDefinitionsLastChangedAt": null,
  "toolDefinitionChangesSinceFirstSeen": 0,
  "firstSeenAt": "2026-10-17T21:25:39.301Z",
  "protocol": "2025-03-26",
  "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."
 }
}