AI 音声通話ボット - OpenAI GPT-4o + ElevenLabs + Twilio インテグレーション

• •OpenAI API Key
• •HTTP Webhookエンドポイント（n8nが自動生成）
• •ターゲットAPIの認証情報が必要な場合あり
• •Google Sheets API認証情報

{
  "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": "音声入力チェック",
      "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応答生成",
      "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 音声合成",
      "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": "音声ファイル保存",
      "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応答",
      "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": "初期挨拶",
      "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": "会話ログ記録",
      "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": "予約確認",
      "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": "予約リクエスト保存",
      "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
          }
        ]
      ]
    }
  }
}