🚀 Why This Agent Works

Instead of using basic “if-this-then-that” chatbots that break when a user asks a complex question, this workflow uses a fully autonomous AI Agent. It can dynamically conversationally route, remember context, and execute side-tasks like checking a real calendar.

🛠️ Setup Guide & Requirements

To get this running, here is what you need to configure in the workflow:

Step 1: Get Your API Keys

• You will need an OpenAI API Key to power the agent’s brain (we recommend GPT-4o for its reasoning capabilities).
• Connect your Instagram Professional Account credentials to n8n.

Step 2: Connect Your Calendar (The Tools)

• Authenticate your Google Calendar inside the Availability Tool and Booking Tool.
• Ensure the bot has read/write permissions for the calendar it needs to check.

Step 3: Customize the Prompt

• Open the AI Agent Node.
• Edit the System Prompt to reflect your pricing, location, tone of voice, and specific services. Tell it exactly how to qualify leads.

⚙️ How the Workflow Works (The Architecture)

1. Trigger: Webhook / Instagram Node (Listens for incoming DMs).
2. Brain (AI Agent): OpenAI gpt-4o combined with a Window Buffer Memory so it remembers previous messages in the chat.
3. Tools (What the Agent can do):
   • Availability Tool: Connects to Google Calendar to check free slots.
   • Booking Tool: Creates the event on the calendar and finalizes the slot.

📋 The Copy-Paste n8n JSON Template

Note: Users can literally copy the code block below and paste it directly into an empty n8n canvas!

{
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "ig-webhook",
        "options": {}
      },
      "name": "Instagram Webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [200, 300]
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "={{ $json.body.message }}",
        "options": {
          "systemMessage": "You are a helpful booking assistant for an agency. Your job is to: 1) Ask intake questions (location, format). 2) Qualify their budget. 3) Offer available times from the calendar tool. 4) Book the appointment using the booking tool."
        }
      },
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 1,
      "position": [460, 300]
    },
    {
      "parameters": {
        "model": "gpt-4o",
        "options": {}
      },
      "name": "OpenAI Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "typeVersion": 1,
      "position": [440, 520]
    },
    {
      "parameters": {
        "sessionId": "={{ $json.body.sender_id }}"
      },
      "name": "Window Buffer Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "typeVersion": 1,
      "position": [580, 520]
    },
    {
      "parameters": {
        "name": "check_availability",
        "description": "Checks the calendar for available appointment slots."
      },
      "name": "Availability Tool",
      "type": "@n8n/n8n-nodes-langchain.toolWorkflow",
      "typeVersion": 1,
      "position": [720, 520]
    },
    {
      "parameters": {
        "name": "book_appointment",
        "description": "Books a qualified user into the calendar."
      },
      "name": "Booking Tool",
      "type": "@n8n/n8n-nodes-langchain.toolWorkflow",
      "typeVersion": 1,
      "position": [860, 520]
    }
  ],
  "connections": {
    "Instagram Webhook": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Window Buffer Memory": {
      "ai_memory": [
        [
          {
            "node": "AI Agent",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "Availability Tool": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "Booking Tool": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    }
  }
}