AI语音呼叫机器人 - OpenAI GPT-4o + ElevenLabs + Twilio集成

• •OpenAI API Key
• •HTTP Webhook 端点（n8n 会自动生成）
• •可能需要目标 API 的认证凭证
• •Google Sheets API 凭证

{
  "id": "ai-voice-calling-bot",
  "meta": {
    "instanceId": "12345abcde67890fghij",
    "templateCredsSetupCompleted": true
  },
  "name": "AI 语音呼叫机器人 - OpenAI GPT-4o + ElevenLabs + Twilio 集成",
  "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 语音 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": "检查语音输入",
      "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 响应",
      "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 文本转语音",
      "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": "上传音频到存储",
      "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 响应",
      "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": "初始问候",
      "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": "记录对话",
      "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": "检查预约",
      "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": "保存预约请求",
      "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 for Appointment",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check Speech Input": {
      "main": [
        [
          {
            "node": "OpenAI GPT-4o Response",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Initial Greeting",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Twilio Voice Webhook": {
      "main": [
        [
          {
            "node": "Check Speech Input",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check for Appointment": {
      "main": [
        [
          {
            "node": "Save Appointment Request",
            "type": "main",
            "index": 0
          }
        ],
        []
      ]
    },
    "OpenAI GPT-4o Response": {
      "main": [
        [
          {
            "node": "ElevenLabs Text-to-Speech",
            "type": "main",
            "index": 0
          },
          {
            "node": "Log Conversation",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Upload Audio to Storage": {
      "main": [
        [
          {
            "node": "Twilio TwiML Response",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "ElevenLabs Text-to-Speech": {
      "main": [
        [
          {
            "node": "Upload Audio to Storage",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}