Twilio · Schema

CreateCallRequest

AuthenticationCommunicationsContact CenterEmailIoTMessagingPhoneSMST1VerificationVideoVoiceTwilioTelecommunicationsReal-TimeWhatsApp

Properties

Name	Type	Description
To	string	Phone number, SIP URI, or client identifier to call
From	string	Twilio phone number or verified caller ID
Url	string	TwiML URL for call instructions
ApplicationSid	string	SID of the TwiML application to handle the call
Method	string
StatusCallback	string	URL for call status webhooks
StatusCallbackMethod	string
StatusCallbackEvent	array
Timeout	integer	Ring timeout in seconds
Record	boolean	Whether to record the call
RecordingChannels	string
RecordingStatusCallback	string
MachineDetection	string	Enable answering machine detection
Twiml	string	Inline TwiML instructions for the call
CallerId	string	Caller ID to display on outbound call

View JSON Schema on GitHub

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/twilio/main/json-schema/twilio-create-call-request-schema.json",
  "title": "CreateCallRequest",
  "x-generated": "2026-10-08",
  "x-method": "derived",
  "x-generator": "derive-json-schema.py",
  "x-source": "openapi/twilio-calls-api-openapi.yml#/components/schemas/CreateCallRequest",
  "type": "object",
  "required": [
    "To",
    "From"
  ],
  "properties": {
    "To": {
      "type": "string",
      "description": "Phone number, SIP URI, or client identifier to call"
    },
    "From": {
      "type": "string",
      "description": "Twilio phone number or verified caller ID"
    },
    "Url": {
      "type": "string",
      "format": "uri",
      "description": "TwiML URL for call instructions"
    },
    "ApplicationSid": {
      "type": "string",
      "description": "SID of the TwiML application to handle the call",
      "pattern": "^AP[0-9a-fA-F]{32}$"
    },
    "Method": {
      "type": "string",
      "enum": [
        "GET",
        "POST"
      ],
      "default": "POST"
    },
    "StatusCallback": {
      "type": "string",
      "format": "uri",
      "description": "URL for call status webhooks"
    },
    "StatusCallbackMethod": {
      "type": "string",
      "enum": [
        "GET",
        "POST"
      ]
    },
    "StatusCallbackEvent": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "initiated",
          "ringing",
          "answered",
          "completed"
        ]
      }
    },
    "Timeout": {
      "type": "integer",
      "description": "Ring timeout in seconds",
      "default": 60
    },
    "Record": {
      "type": "boolean",
      "description": "Whether to record the call",
      "default": false
    },
    "RecordingChannels": {
      "type": "string",
      "enum": [
        "mono",
        "dual"
      ]
    },
    "RecordingStatusCallback": {
      "type": "string",
      "format": "uri"
    },
    "MachineDetection": {
      "type": "string",
      "enum": [
        "Enable",
        "DetectMessageEnd"
      ],
      "description": "Enable answering machine detection"
    },
    "Twiml": {
      "type": "string",
      "description": "Inline TwiML instructions for the call"
    },
    "CallerId": {
      "type": "string",
      "description": "Caller ID to display on outbound call"
    }
  }
}

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