AI Chat Agent with MCP Client

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": "MCP Client",
  "nodes": [
    {
      "parameters": {
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "typeVersion": 1.1,
      "position": [
        0,
        0
      ],
      "id": "07b4488b-c683-45bd-af6c-cadc96a1282c",
      "name": "When chat message received"
    },
    {
      "parameters": {
        "options": {
          "systemMessage": "=You are a helpful assistant\n\nToday's date is: {{ $now }}"
        }
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 1.8,
      "position": [
        220,
        0
      ],
      "id": "5b129199-e9d3-43ba-9dcf-afc6a6a60d68",
      "name": "AI Agent"
    },
    {
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini"
        },
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "typeVersion": 1.2,
      "position": [
        40,
        220
      ],
      "id": "e0ab40c3-92ec-46db-b7fd-19f038221cb9",
      "name": "OpenAI Chat Model",
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "sseEndpoint": "https://jonocatliff.app.n8n.cloud/mcp/mcp/sse"
      },
      "type": "@n8n/n8n-nodes-langchain.mcpClientTool",
      "typeVersion": 1,
      "position": [
        200,
        220
      ],
      "id": "865bfd14-7ebb-47e8-87bb-6361dbecbfc3",
      "name": "MCP Client"
    }
  ],
  "connections": {
    "When chat message received": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "MCP Client": {
      "ai_tool": [
        [
          {
            "node": "AI Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "7de32429-006f-40f2-be19-b59a49c3ffd8",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "id": "eVFR42crtNUMjTY0",
  "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.

• openAiApi

About this workflow

MCP Client. Uses chatTrigger, agent, lmChatOpenAi, mcpClientTool. Chat trigger; 4 nodes.

Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →

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