{
  "workflow": {
    "id": 5821,
    "name": "Build a scalable AI chatbot with GPT-4 and Pipedream: Calendly, Gmail integration",
    "views": 1531,
    "recentViews": 0,
    "totalViews": 1531,
    "createdAt": "2025-07-09T13:49:54.152Z",
    "description": "*This workflow contains community nodes that are only compatible with the self-hosted version of n8n.*\n\nThis n8n workflow integrates the powerful Pipedream MCP server with AI capabilities to create a smart, extensible assistant that can interact with over **2,700 APIs and 10,000+ tools** — all within a secure and modular structure.\n\n![image](https://n3wstorage.b-cdn.net/n3witalia/pipedream_2.png)\n\nThis setup seamlessly integrates Pipedream's MCP server with n8n, **enabling your AI assistant to leverage thousands of APIs and tools securely**.\n\n---\n\n### **Benefits**\n\n* **Massive Tool Access**: Instantly connect 2,700+ APIs using Pipedream MCP tools — from productivity apps to custom APIs — with zero-code integration.\n* **Dynamic AI Agent**: The use of a LangChain agent allows for flexible tool execution and contextual conversations, powered by GPT.\n* **Easy Customization**: Simply copy your MCP tool URL into the respective `sseEndpoint` field to extend the agent’s capabilities.\n* **Scalable and Modular**: Add or remove tools (like Slack, Notion, Stripe, etc.) without altering the core logic.\n* **Secure and Revocable**: Credentials and API access can be managed directly via Pipedream’s MCP dashboard.\n\n---\n\n### **How It Works**  \n1. **Chat Trigger**: The workflow begins when a chat message is received via the `When chat message received` node, which acts as the entry point.  \n2. **AI Agent Processing**: The message is passed to the `AI Agent` node, which orchestrates the interaction using the connected tools and memory.  \n3. **Language Model**: The `OpenAI Chat Model` (GPT-4.1-mini) processes the user's input and generates responses or actions.  \n4. **Memory**: The `Simple Memory` node retains context from the conversation to enable coherent multi-turn interactions.  \n5. **Tool Integration**:  \n   - The `Calendly` and `Gmail` nodes (connected via Pipedream's MCP server) allow the AI to perform actions like scheduling events or sending emails. These tools use SSE (Server-Sent Events) endpoints provided by Pipedream.  \n6. **Response**: The AI Agent combines the model's output and tool responses to deliver a final reply to the user.  \n\n---\n\n### **Set Up Steps**  \n1. **Sign Up for Pipedream**:  \n   - Create an account on and set up your MCP server.  \n2. **Configure MCP Tools**:  \n   - Connect your accounts (e.g., Calendly, Gmail) in Pipedream and obtain the SSE endpoints for each tool (e.g., `https://mcp.pipedream.net/xxx/calendly_v2`).  \n3. **Update n8n Nodes**:  \n   - Replace the placeholder SSE endpoints in the `Calendly` and `Gmail` nodes with your Pipedream MCP URLs.  \n4. **OpenAI Credentials**:  \n   - Ensure the `OpenAI Chat Model` node has valid API credentials (configured under \"OpenAi account\").  \n5. **Activate Workflow**:  \n   - Enable the `When chat message received` node (currently disabled) and deploy the workflow.  \n\n---\n\n### **Need help customizing?**  \n[Contact me](mailto:info@n3w.it) for consulting and support or add me on [Linkedin](https://www.linkedin.com/in/davideboizza/). ",
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      "id": "muEszdmquRYSUdM9",
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          "parameters": {
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              "systemMessage": "You are a helpful assistant"
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        },
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          "name": "OpenAI Chat Model",
          "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
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          "parameters": {
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              "mode": "list",
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          "credentials": {
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          "typeVersion": 1
        },
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          "name": "Simple Memory",
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          "type": "@n8n/n8n-nodes-langchain.mcpClientTool",
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        },
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          "position": [
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          ],
          "parameters": {
            "width": 624,
            "height": 656,
            "content": "## Pipedream's MCP server\n\nAdd 2,700+ APIs and 10,000+ tools to your AI assistant for free. Connect your accounts securely and revoke access at any time.\n\n![image](https://n3wstorage.b-cdn.net/n3witalia/pipedream_1.png)\n"
          },
          "typeVersion": 1
        },
        {
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          "position": [
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          "parameters": {
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            "content": "### How to work\n\n- Sign up on [Pipedream](https://mcp.pipedream.com/)\n- Manage your MCP server and connected accounts\n- Copy and paste your MCP Server URL https://mcp.pipedream.net/xxx/{app_slug} into the MCP SSE Endpoint node in n8n.\n\nExample:\n- https://mcp.pipedream.net/xxx/calendly_v2 for Calendly\n- https://mcp.pipedream.net/xxx/calendly_v2 for Gmail\n\n\n![image](https://n3wstorage.b-cdn.net/n3witalia/pipedream_2.png)"
          },
          "typeVersion": 1
        }
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      "active": false,
      "pinData": {},
      "settings": {
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      "versionId": "d75b30d2-ecdf-4ac7-8d4b-72c5961c7a7c",
      "connections": {
        "Gmail": {
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                "node": "AI Agent",
                "type": "ai_tool",
                "index": 0
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            ]
          ]
        },
        "Calendly": {
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                "type": "ai_tool",
                "index": 0
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          ]
        },
        "Simple Memory": {
          "ai_memory": [
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                "node": "AI Agent",
                "type": "ai_memory",
                "index": 0
              }
            ]
          ]
        },
        "OpenAI Chat Model": {
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                "node": "AI Agent",
                "type": "ai_languageModel",
                "index": 0
              }
            ]
          ]
        },
        "When chat message received": {
          "main": [
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                "node": "AI Agent",
                "type": "main",
                "index": 0
              }
            ]
          ]
        }
      }
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    "lastUpdatedBy": 62,
    "workflowInfo": {
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        "@n8n/n8n-nodes-langchain.memoryBufferWindow": {
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      }
    },
    "status": "published",
    "user": {
      "name": "Davide",
      "username": "n3witalia",
      "bio": "Full-stack Web Developer based in Italy specialising in Marketing & AI-powered automations. For business enquiries, send me an email at info@n3w.it or add me on Linkedin.com/in/davideboizza",
      "verified": true,
      "links": [
        "https://n3w.it"
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      "avatar": "https://gravatar.com/avatar/d41b8a0aa81139243509c58870f5b4be292824a507ab57d10ed066d8628ed8da?r=pg&d=retro&size=200"
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            "nodeVersion": "1.0",
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            "subcategories": {
              "Core Nodes": [
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              ]
            }
          }
        },
        "group": "[\"input\"]",
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          "color": "#FFD233"
        },
        "iconData": {
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          "type": "icon"
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        "displayName": "Sticky Note",
        "typeVersion": 1,
        "nodeCategories": [
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        ]
      },
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        "icon": "fa:robot",
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            "categories": [
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            "subcategories": {
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          }
        },
        "group": "[\"transform\"]",
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                "Root Nodes"
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              "Language Models": [
                "Chat Models (Recommended)"
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        "icon": "fa:database",
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                  "url": "https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-langchain.chattrigger/"
                }
              ]
            },
            "categories": [
              "Core Nodes",
              "Langchain"
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          }
        },
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        "defaults": {
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        "displayName": "Chat Trigger",
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            "name": "Core Nodes"
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          {
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        ]
      },
      {
        "id": 1292,
        "icon": "file:../mcp.svg",
        "name": "@n8n/n8n-nodes-langchain.mcpClientTool",
        "codex": {
          "data": {
            "alias": [
              "Model Context Protocol",
              "MCP Client"
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            "resources": {
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                {
                  "url": "https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.toolmcp/"
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              ]
            },
            "categories": [
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              "Langchain"
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            "subcategories": {
              "AI": [
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                "Tools"
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          }
        },
        "group": "[\"output\"]",
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          "name": "MCP Client"
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}