Ai-powered Whatsapp Appointment Assistant

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "name": "AI-Powered WhatsApp Appointment Assistant",
  "nodes": [
    {
      "parameters": {
        "updates": [
          "messages"
        ],
        "options": {}
      },
      "type": "n8n-nodes-base.whatsAppTrigger",
      "typeVersion": 1,
      "position": [
        -560,
        -80
      ],
      "id": "trig-whatsapp-0001",
      "name": "WhatsApp Trigger",
      "credentials": {
        "whatsAppTriggerApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "={{ $json.messages[0].text.body }}",
        "options": {
          "systemMessage": "=You are a friendly appointment booking assistant communicating over WhatsApp. Help the user check availability, book, reschedule, or cancel appointments using the available calendar tools.\n\nGuidelines:\n1. Always confirm the date and time with the user before creating an event.\n2. Use the 'Get Date & Time' tool when you need to know the current date/time to resolve relative terms like 'tomorrow' or 'next Monday'.\n3. Use the 'Search' tool to check existing events before booking, to avoid double-booking.\n4. Use the 'Create' tool to add a confirmed appointment to the calendar.\n5. Keep replies short, clear, and conversational \u2014 this is a WhatsApp chat, not an email.\n6. If required details (name, date, time, purpose) are missing, ask for them before booking."
        }
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 3.1,
      "position": [
        -280,
        -80
      ],
      "id": "agent-0001",
      "name": "AI Agent"
    },
    {
      "parameters": {
        "model": "llama-3.1-8b-instant",
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatGroq",
      "typeVersion": 1,
      "position": [
        -320,
        120
      ],
      "id": "groq-0001",
      "name": "Groq Chat Model",
      "credentials": {
        "groqApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "sessionIdType": "customKey",
        "sessionKey": "={{ $json.messages[0].from }}"
      },
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "typeVersion": 1.3,
      "position": [
        -200,
        120
      ],
      "id": "memory-0001",
      "name": "Memory"
    },
    {
      "parameters": {
        "resource": "event",
        "operation": "create",
        "calendar": {
          "__rl": true,
          "value": "YOUR_GOOGLE_CALENDAR_ID",
          "mode": "list"
        },
        "start": "={{ $fromAI('startDateTime', 'ISO 8601 start date and time of the appointment') }}",
        "end": "={{ $fromAI('endDateTime', 'ISO 8601 end date and time of the appointment') }}",
        "additionalFields": {
          "summary": "={{ $fromAI('summary', 'Short title for the appointment') }}",
          "description": "={{ $fromAI('description', 'Additional notes about the appointment') }}"
        }
      },
      "type": "n8n-nodes-base.googleCalendarTool",
      "typeVersion": 1.3,
      "position": [
        -80,
        120
      ],
      "id": "calendar-create-0001",
      "name": "Create",
      "credentials": {
        "googleCalendarOAuth2Api": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "options": {}
      },
      "type": "n8n-nodes-base.dateTimeTool",
      "typeVersion": 2,
      "position": [
        40,
        120
      ],
      "id": "datetime-0001",
      "name": "Date & Time"
    },
    {
      "parameters": {
        "resource": "event",
        "operation": "getAll",
        "calendar": {
          "__rl": true,
          "value": "YOUR_GOOGLE_CALENDAR_ID",
          "mode": "list"
        },
        "returnAll": false,
        "limit": 10,
        "options": {
          "timeMin": "={{ $fromAI('timeMin', 'Start of the search window, ISO 8601') }}",
          "timeMax": "={{ $fromAI('timeMax', 'End of the search window, ISO 8601') }}"
        }
      },
      "type": "n8n-nodes-base.googleCalendarTool",
      "typeVersion": 1.3,
      "position": [
        160,
        120
      ],
      "id": "calendar-search-0001",
      "name": "Search",
      "credentials": {
        "googleCalendarOAuth2Api": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "resource": "message",
        "operation": "send",
        "phoneNumberId": "YOUR_WHATSAPP_PHONE_NUMBER_ID",
        "recipientPhoneNumber": "={{ $('WhatsApp Trigger').item.json.messages[0].from }}",
        "textBody": "={{ $json.output }}"
      },
      "type": "n8n-nodes-base.whatsApp",
      "typeVersion": 1,
      "position": [
        40,
        -80
      ],
      "id": "whatsapp-send-0001",
      "name": "Send message",
      "credentials": {
        "whatsAppApi": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "WhatsApp Trigger": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "AI Agent": {
      "main": [
        [
          {
            "node": "Send message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Groq Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Memory": {
      "ai_memory": [
        [
          {
            "node": "AI Agent",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "Create": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Date & Time": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Search": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1",
    "binaryMode": "separate"
  },
  "versionId": "reconstructed-0001",
  "meta": {
    "templateCredsSetupCompleted": false
  },
  "nodeGroups": [],
  "id": "RECONSTRUCTED0002",
  "tags": []
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• googleCalendarOAuth2Api
• groqApi
• whatsAppApi
• whatsAppTriggerApi

About this workflow

AI-Powered WhatsApp Appointment Assistant. Uses whatsAppTrigger, agent, lmChatGroq, memoryBufferWindow. Event-driven trigger; 8 nodes.

Source: https://github.com/zakir-maswani/AI-Whatsapp-Appointment-Assistant/blob/main/AI-Powered_WhatsApp_Appointment_Assistant.json — original creator credit. Request a take-down →

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