AI Agent with Mcp Client (call Any Mcp Server)

The workflow JSON

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{
  "name": "AI Agent with MCP Client (call any MCP server)",
  "nodes": [
    {
      "id": "5cbf56d6-a2b9-4777-b449-e78de71575e9",
      "name": "When Chat Message Received",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "typeVersion": 1.4,
      "position": [
        0,
        112
      ],
      "parameters": {
        "public": false,
        "options": {}
      }
    },
    {
      "id": "fb43da23-5e81-4a05-9d18-8896fd386a90",
      "name": "MCP Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 3.1,
      "position": [
        224,
        112
      ],
      "parameters": {
        "promptType": "auto",
        "options": {
          "systemMessage": "You are an assistant that can call tools exposed by a connected MCP server. Use the available MCP tools to answer the user request, then reply clearly."
        }
      }
    },
    {
      "id": "bc4bb628-438b-4269-af23-f12d4cf44480",
      "name": "LLM via OpenRouter",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenRouter",
      "typeVersion": 1,
      "position": [
        240,
        336
      ],
      "parameters": {
        "model": "anthropic/claude-sonnet-4"
      }
    },
    {
      "id": "09d2f1e7-d35d-4ab4-9c11-3b66ece7c816",
      "name": "MCP Server Tools",
      "type": "@n8n/n8n-nodes-langchain.mcpClientTool",
      "typeVersion": 1.2,
      "position": [
        368,
        336
      ],
      "parameters": {
        "endpointUrl": "https://your-mcp-server.example/mcp",
        "serverTransport": "httpStreamable",
        "authentication": "none",
        "include": "all",
        "options": {}
      }
    },
    {
      "id": "000f1d13-81d0-4573-abbd-4a541b4bc702",
      "name": "README",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -560,
        -180
      ],
      "parameters": {
        "color": 3,
        "width": 500,
        "height": 460,
        "content": "## Give an AI agent tools from any MCP server\n\n**Who's it for**\nBuilders who want an n8n AI agent to use tools exposed by an external MCP (Model Context Protocol) server.\n\n**How it works**\nA chat message goes to an AI Agent connected to an external MCP server via the MCP Client Tool node; the agent discovers and calls that server's tools, then replies.\n\n**How to set up**\n1. Add an OpenRouter credential to the model.\n2. In MCP Server Tools set your MCP endpointUrl (+ transport/auth if needed).\n3. Open the chat and ask something the server's tools can answer.\n\n**Requirements**\n- An OpenRouter account and a reachable MCP server endpoint.\n\n**How to customize**\n- Point at any MCP server; restrict tools via Include; swap the trigger or model."
      }
    },
    {
      "id": "df9ef99a-d343-463f-92c9-da4050676b88",
      "name": "Step note",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -40,
        -190
      ],
      "parameters": {
        "color": 7,
        "width": 720,
        "height": 110,
        "content": "### Flow\nWhen Chat Message Received \u2192 MCP Agent (model + MCP Server Tools client) \u2192 reply."
      }
    }
  ],
  "connections": {
    "When Chat Message Received": {
      "main": [
        [
          {
            "node": "MCP Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "LLM via OpenRouter": {
      "ai_languageModel": [
        [
          {
            "node": "MCP Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "MCP Server Tools": {
      "ai_tool": [
        [
          {
            "node": "MCP Agent",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  }
}

About this workflow

AI Agent with MCP Client (call any MCP server). Uses chatTrigger, agent, lmChatOpenRouter, mcpClientTool. Chat trigger; 6 nodes.

Source: https://github.com/DeveloperAlly/n8n/blob/aeb8ddaba080bdcba0096b7598bb3afb590717b7/templates/workflows/07-mcp-client-agent.json — original creator credit. Request a take-down →

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