{
  "verifiedAt": "2026-11-02",
  "client": {
    "name": "Devin CLI",
    "version": "3000.11.234",
    "modelArgument": "gpt-6.1-sol",
    "modelReported": "GPT-6.1 Sol Low Thinking"
  },
  "endpoint": "https://call4.me/mcp",
  "authentication": {
    "devin": "Manual CLI browser sign in completed.",
    "call4me": "Existing account API key provided through the CALL4ME_API_KEY environment variable and a native MCP Authorization header reference. Call4me OAuth signup was not tested."
  },
  "connectionChecks": [
    {
      "tool": "call4me_get_balance",
      "succeeded": true,
      "privateAccountFieldsOmitted": true
    },
    {
      "tool": "call4me_get_requirements",
      "input": {
        "category": "general"
      },
      "succeeded": true
    }
  ],
  "target": {
    "name": "NIST WWV automated telephone time announcement",
    "officialSource": "https://www.nist.gov/pml/time-and-frequency-division/time-distribution/radio-station-wwv/telephone-time-day-service",
    "phone": "+13034997111"
  },
  "callCount": 1,
  "sameCallFollowed": true,
  "initialMaxMinutes": 2,
  "promptStopAfterSeconds": 90,
  "trace": [
    {
      "tool": "call4me_get_requirements",
      "input": {
        "category": "general"
      },
      "result": {
        "requirementsReturned": true
      }
    },
    {
      "tool": "call4me_place_call",
      "input": {
        "to": "+13034997111",
        "business": "NIST WWV automated time announcement",
        "category": "general",
        "on_behalf_of": "call4me",
        "calling_as": "call4me",
        "max_minutes": 2,
        "goal": "Listen silently to this automated broadcast. Do not speak at all, including a greeting or acknowledgement. Capture one complete spoken UTC time announcement and hang up immediately. If none arrives, hang up within 90 seconds of pickup. If a human answers, hang up immediately. No human conversation, personal information, callback, text, voicemail, booking, purchase or account change is authorized. Do not ask for anything else.",
        "facts": "Listen silently to this automated broadcast. Do not speak at all, including a greeting or acknowledgement. Capture one complete spoken UTC time announcement and hang up immediately. If none arrives, hang up within 90 seconds of pickup. If a human answers, hang up immediately. No human conversation, personal information, callback, text, voicemail, booking, purchase or account change is authorized. Do not ask for anything else.",
        "details": {
          "questions": "Listen for one complete spoken UTC time announcement and report it; do not ask anyone questions."
        }
      },
      "result": {
        "callSubmitted": true,
        "callIdReturned": true
      }
    },
    {
      "tool": "call4me_get_call",
      "input": {
        "call": "same authorized call",
        "wait_seconds": 10
      },
      "result": {
        "status": "in_progress",
        "finished": false
      }
    },
    {
      "tool": "call4me_get_call",
      "input": {
        "call": "same authorized call",
        "wait_seconds": 10
      },
      "result": {
        "status": "in_progress",
        "finished": false
      }
    },
    {
      "tool": "call4me_hang_up",
      "input": {
        "call": "same authorized call"
      },
      "result": {
        "message": "hung up"
      }
    },
    {
      "tool": "call4me_get_call",
      "input": {
        "call": "same authorized call",
        "wait_seconds": 10
      },
      "result": {
        "status": "completed",
        "finished": true
      }
    }
  ],
  "transcript": [
    "them: At the tone, eighteen hours, nineteen minutes, coordinated universal time",
    "note: the call was ended by the user"
  ],
  "outcome": {
    "status": "completed",
    "finished": true,
    "result": "done",
    "announcedTime": "18:19 UTC",
    "ended": "call4me hung up: the user hung up from their agent (call4me_hang_up)",
    "callerUtterancesInReturnedTranscript": 0,
    "independentMonitorIntervened": false
  },
  "limitations": [
    "The transcript is text returned by call4me through native Devin tools. No new audio is published with this test.",
    "No caller speech appears in that transcript. We did not independently verify silence from audio.",
    "The announcement is what the automated line said, not an independent clock accuracy measurement.",
    "This one call does not establish a human conversation, a successful booking or reliability across repeated calls.",
    "The max_minutes value allocates initial credits and can extend. Devin actively hung up this call.",
    "Account, call and session identifiers, caller numbers, account balances, private paths and personal details are omitted."
  ]
}