Robot de llamadas por voz con IA - Integración de OpenAI GPT-4o + ElevenLabs + Twilio

• •Clave de API de OpenAI
• •Punto final de HTTP Webhook (n8n generará automáticamente)
• •Pueden requerirse credenciales de autenticación para la API de destino
• •Credenciales de API de Google Sheets

{
  "id": "ai-voice-calling-bot",
  "meta": {
    "instanceId": "12345abcde67890fghij",
    "templateCredsSetupCompleted": true
  },
  "name": "AI Voice Calling Bot - OpenAI GPT-4o + ElevenLabs + Twilio Integration",
  "tags": [
    {
      "id": "ai-voice-bot",
      "name": "AI Voice Bot",
      "createdAt": "2024-01-01T00:00:00.000Z",
      "updatedAt": "2024-01-01T00:00:00.000Z"
    }
  ],
  "nodes": [
    {
      "id": "webhook-start",
      "name": "Twilio Voice Webhook",
      "type": "n8n-nodes-base.webhook",
      "position": [
        240,
        300
      ],
      "webhookId": "voice-webhook-start",
      "parameters": {
        "path": "voice-webhook",
        "options": {},
        "httpMethod": "POST",
        "responseMode": "responseNode"
      },
      "typeVersion": 1
    },
    {
      "id": "check-speech-input",
      "name": "Verificar entrada de voz",
      "type": "n8n-nodes-base.if",
      "position": [
        460,
        300
      ],
      "parameters": {
        "conditions": {
          "options": {
            "leftValue": "={{ $json.SpeechResult }}",
            "operation": "exists",
            "caseSensitive": true
          }
        }
      },
      "typeVersion": 1
    },
    {
      "id": "openai-gpt",
      "name": "OpenAI GPT-4o Response",
      "type": "n8n-nodes-base.openAi",
      "position": [
        680,
        200
      ],
      "parameters": {
        "model": "gpt-4o",
        "options": {
          "maxTokens": 150,
          "temperature": 0.7
        },
        "messages": {
          "values": [
            {
              "role": "system",
              "content": "You are a helpful AI assistant for a service business. You can help customers:\n1. Schedule appointments (collect name, phone, preferred date/time, service type)\n2. Order pizza (collect size, toppings, address, phone)\n3. Book other services (collect relevant details)\n\nAlways be polite, concise, and gather necessary information step by step. Keep responses under 100 words for voice calls. End with a clear question or next step."
            },
            {
              "role": "user",
              "content": "={{ $json.SpeechResult || 'Hello, how can I help you today?' }}"
            }
          ]
        }
      },
      "credentials": {
        "openAiApi": {
          "id": "openai-creds",
          "name": "OpenAI API"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "elevenlabs-tts",
      "name": "ElevenLabs Text-to-Speech",
      "type": "n8n-nodes-base.elevenLabs",
      "position": [
        900,
        200
      ],
      "parameters": {
        "text": "={{ $json.choices[0].message.content }}",
        "model_id": "eleven_monolingual_v1",
        "voice_id": "21m00Tcm4TlvDq8ikWAM",
        "voice_settings": {
          "style": 0,
          "stability": 0.75,
          "similarity_boost": 0.75,
          "use_speaker_boost": true
        }
      },
      "credentials": {
        "elevenLabsApi": {
          "id": "elevenlabs-creds",
          "name": "ElevenLabs API"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "upload-audio",
      "name": "Subir audio al almacenamiento",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1120,
        200
      ],
      "parameters": {
        "operation": "upload",
        "additionalFields": {
          "fileName": "response.mp3",
          "contentType": "audio/mpeg"
        },
        "binaryPropertyName": "data"
      },
      "typeVersion": 3
    },
    {
      "id": "twilio-response",
      "name": "Twilio TwiML Response",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1340,
        200
      ],
      "parameters": {
        "twiml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<Response>\n  <Play>{{ $json.audio_url }}</Play>\n  <Gather input=\"speech\" timeout=\"10\" speechTimeout=\"auto\" action=\"{{ $node.webhook.getWebhookUrl() }}\" method=\"POST\">\n    <Say voice=\"alice\">Please speak after the tone.</Say>\n  </Gather>\n  <Say voice=\"alice\">I didn't hear anything. Goodbye!</Say>\n  <Hangup/>\n</Response>"
      },
      "typeVersion": 1
    },
    {
      "id": "initial-greeting",
      "name": "Saludo inicial",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        680,
        400
      ],
      "parameters": {
        "twiml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<Response>\n  <Say voice=\"alice\">Hello! I'm your AI assistant. I can help you schedule appointments, order pizza, or book services. How can I help you today?</Say>\n  <Gather input=\"speech\" timeout=\"10\" speechTimeout=\"auto\" action=\"{{ $node['Twilio Voice Webhook'].getWebhookUrl() }}\" method=\"POST\">\n    <Say voice=\"alice\">Please speak after the tone.</Say>\n  </Gather>\n  <Say voice=\"alice\">I didn't hear anything. Please call back. Goodbye!</Say>\n  <Hangup/>\n</Response>"
      },
      "typeVersion": 1
    },
    {
      "id": "log-conversation",
      "name": "Registrar conversación",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        900,
        400
      ],
      "parameters": {
        "columns": {
          "value": {
            "call_sid": "={{ $json.CallSid }}",
            "caller_id": "={{ $json.From }}",
            "timestamp": "={{ $now }}",
            "ai_response": "={{ $json.choices[0].message.content }}",
            "speech_input": "={{ $json.SpeechResult }}"
          },
          "mappingMode": "defineBelow"
        },
        "options": {},
        "operation": "append",
        "sheetName": "Call_Logs",
        "documentId": "your-google-sheet-id"
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "google-sheets-creds",
          "name": "Google Sheets"
        }
      },
      "typeVersion": 3
    },
    {
      "id": "check-appointment",
      "name": "Verificar cita",
      "type": "n8n-nodes-base.if",
      "position": [
        1120,
        400
      ],
      "parameters": {
        "conditions": {
          "options": {
            "leftValue": "={{ $json.choices[0].message.content.toLowerCase() }}",
            "operation": "contains",
            "rightValue": "appointment",
            "caseSensitive": false
          }
        }
      },
      "typeVersion": 1
    },
    {
      "id": "save-appointment",
      "name": "Guardar solicitud de cita",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
        1340,
        500
      ],
      "parameters": {
        "columns": {
          "value": {
            "status": "pending",
            "call_sid": "={{ $json.CallSid }}",
            "caller_id": "={{ $json.From }}",
            "timestamp": "={{ $now }}",
            "request_details": "={{ $json.SpeechResult }}"
          },
          "mappingMode": "defineBelow"
        },
        "operation": "append",
        "sheetName": "Appointments",
        "documentId": "your-appointments-sheet-id"
      },
      "credentials": {
        "googleSheetsOAuth2Api": {
          "id": "google-sheets-creds",
          "name": "Google Sheets"
        }
      },
      "typeVersion": 3
    }
  ],
  "active": true,
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "1",
  "connections": {
    "log-conversation": {
      "main": [
        [
          {
            "node": "check-appointment",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "check-speech-input": {
      "main": [
        [
          {
            "node": "openai-gpt",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "initial-greeting",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "webhook-start": {
      "main": [
        [
          {
            "node": "check-speech-input",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "check-appointment": {
      "main": [
        [
          {
            "node": "save-appointment",
            "type": "main",
            "index": 0
          }
        ],
        []
      ]
    },
    "openai-gpt": {
      "main": [
        [
          {
            "node": "elevenlabs-tts",
            "type": "main",
            "index": 0
          },
          {
            "node": "log-conversation",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "upload-audio": {
      "main": [
        [
          {
            "node": "twilio-response",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "elevenlabs-tts": {
      "main": [
        [
          {
            "node": "upload-audio",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}