{
  "title": "State of MCP servers, October 2026",
  "source": "QAmcp (https://qamcp.dev), tests of public servers from the official MCP Registry",
  "tested": "2026-10-18 to 2026-10-26",
  "method": "https://qamcp.dev/state-of-mcp-2026-10.html#method",
  "servers": {
    "tested": 365,
    "answered": 362,
    "notAnswering": 3,
    "needLogin": 233,
    "loginSetupChecked": 219,
    "loginSetupPassed": 207,
    "fullyTested": 129
  },
  "scores": {
    "average": 88,
    "median": 89,
    "from90to100": 63,
    "from70to89": 64,
    "below70": 2,
    "perfect100": 10
  },
  "tools": {
    "total": 1806,
    "perServerAverage": 14.3,
    "largestServer": 60,
    "labeledReadOnly": 1080,
    "labeledNotReadOnly": 570,
    "noSafetyLabel": 156
  },
  "problems": {
    "serversWithUndescribedInputs": {
      "count": 66,
      "of": 129
    },
    "serversAcceptingWrongInputType": {
      "count": 27,
      "of": 102
    },
    "serversAcceptingMissingRequiredInput": {
      "count": 7,
      "of": 102
    },
    "serversOnOlderMcpVersion": {
      "count": 90,
      "of": 362
    },
    "serversWithNearDuplicateTools": {
      "count": 11,
      "of": 129
    },
    "serversWithHugeAnswers": {
      "count": 8,
      "of": 129
    },
    "serversWithToolsThatCrashOrHang": {
      "count": 4,
      "of": 129
    }
  },
  "security": {
    "hiddenInstructionsFound": 0,
    "serversChecked": 129,
    "leakedSecretsFound": 0,
    "serversWithErrorMessagesChecked": 110
  },
  "license": "CC BY 4.0: free to use with credit to QAmcp (qamcp.dev)"
}