This workflow follows the Agent → OpenAI Chat recipe pattern — see all workflows that pair these two integrations.
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": "Multiagente MCP",
"nodes": [
{
"parameters": {
"promptType": "define",
"text": "={{ $json.text }}",
"options": {
"systemMessage": "# Descripcion General:\nEres un asistente personal, tu tarea es llamar a la herramienta adecuada en funci\u00f3n de la consulta del usuario.\n\n\n# Herramientas:\n\"MCP Gmail\": usa esta herramienta para enviar, responder, eliminar, y obtener correos.\n\"MCP Calendario\": usa esta herramienta para crear, eliminar, obtener y actualizar eventos en el calendario.\n\"MCP Contactos\": usa esta herramienta para obtener, a\u00f1adir, actualizar y eliminar un contacto.\n\n# Reglas:\nSi el usuario pide enviar un correo y no especifica la direcci\u00f3n del destinatario pero s\u00ed que te da un nombre, tienes que usar primero la herramienta \"MCP Contactos\" para obtener la direcci\u00f3n de correo del contacto especificado y despu\u00e9s usar la herramienta \"MCP Gmail\" para enviar el correo. Si no existe el contacto, solicita al usuario la direcci\u00f3n de correo para a\u00f1adirlo.\n\n## Ejemplo 1:\n\nEntrada: Env\u00eda un email a josema@gmail.com con el asunto \"Reunion\" y el contenido \"Est\u00e1s disponible ma\u00f1ana a las 10 ?\"\n\nAcci\u00f3n: Usa la herramienta \"MCP Gmail\" para enviar el email a josema@gmail.com.\n\nSalida: Se ha enviado el correo a josema@gmail.com con el asunto \"Reunion\" y el contenido \"Est\u00e1s disponible ma\u00f1ana a las 10 ?\"\n\n\n## Ejemplo 2:\n\nEntrada: Agenda una reuni\u00f3n con josema@gmail.com con el t\u00edtulo \"Reuni\u00f3n\" y la descripci\u00f3n \"Reuni\u00f3n de Ventas\"\n\nAcci\u00f3n: Usa la herramienta \"MCP Calendario\" para crear un evento con josema@gmail.com.\n\nSalida: Se ha agendado una reuni\u00f3n con josema@gmail.com.\n\n\n## Ejemplo 3:\n\nEntrada: A\u00f1ade el contacto Josema con el correo josema@gmail.com\n\nAcci\u00f3n: Usa la herramienta \"MCP Contactos\" para a\u00f1adir informaci\u00f3n que te de el usuario\n\nSalida: Se ha a\u00f1adido la informaci\u00f3n correctamente.\n\n\n\n\n# Recordatorios\n- La fecha y hora actual es: **{{ $now }}**. \n- Nunca te inventes informaci\u00f3n, solo selecciona la herramienta adecuada para realizar la acci\u00f3n."
}
},
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 1.8,
"position": [
0,
-100
],
"id": "b34b9e8f-f4ef-4067-9215-cbaf465579fd",
"name": "AI Agent"
},
{
"parameters": {
"sessionIdType": "customKey",
"sessionKey": "={{ $('Telegram Trigger').item.json.message.chat.id }}"
},
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"typeVersion": 1.3,
"position": [
-40,
140
],
"id": "79565456-cfec-4c6d-9705-a784ae0484e1",
"name": "Simple Memory"
},
{
"parameters": {
"sseEndpoint": "https://primary-production-13209.up.railway.app/mcp/27dd4208-4407-4413-a270-1302d812e60e/sse"
},
"type": "@n8n/n8n-nodes-langchain.mcpClientTool",
"typeVersion": 1,
"position": [
140,
240
],
"id": "ed2aa5a8-1cb6-4da7-9f9b-8753bf67da09",
"name": "MCP Gmail"
},
{
"parameters": {
"sseEndpoint": "https://primary-production-13209.up.railway.app/mcp/336d6b12-6aaf-4ebc-bd5b-c682313cd94f/sse"
},
"type": "@n8n/n8n-nodes-langchain.mcpClientTool",
"typeVersion": 1,
"position": [
300,
240
],
"id": "d5f4ae07-915b-49dd-a548-6b86f3e6b9bd",
"name": "MCP Calendario"
},
{
"parameters": {
"sseEndpoint": "https://primary-production-13209.up.railway.app/mcp/33322373-5080-4e97-b468-f0f40f6686d9/sse"
},
"type": "@n8n/n8n-nodes-langchain.mcpClientTool",
"typeVersion": 1,
"position": [
440,
240
],
"id": "207342ba-610c-4175-8d5a-68a84aa8b215",
"name": "MCP Contactos"
},
{
"parameters": {
"updates": [
"message"
],
"additionalFields": {}
},
"type": "n8n-nodes-base.telegramTrigger",
"typeVersion": 1.1,
"position": [
-1140,
-100
],
"id": "dd145a32-db8a-47eb-a80a-411229465ce6",
"name": "Telegram Trigger",
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"rules": {
"values": [
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"leftValue": "={{ $json.message.voice.file_id }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"id": "0ef7181d-c151-4d40-a341-b0002fc82518"
}
],
"combinator": "and"
},
"renameOutput": true,
"outputKey": "Voice"
},
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "16af8e01-a416-45b8-8358-30e9243ca95f",
"leftValue": "={{ $json.message.text }}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
}
}
],
"combinator": "and"
},
"renameOutput": true,
"outputKey": "Text"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.switch",
"typeVersion": 3.2,
"position": [
-920,
-100
],
"id": "b5252a31-b573-48cf-a9ae-8e9e22ed047d",
"name": "Switch"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "9cd54906-fbfa-4578-a57c-e7cc41daae92",
"name": "text",
"value": "={{ $json.message.text }}",
"type": "string"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
-480,
0
],
"id": "824f51ea-baf4-478d-8ec7-563896dbb45e",
"name": "Edit Fields"
},
{
"parameters": {
"resource": "file",
"fileId": "={{ $json.message.voice.file_id }}"
},
"type": "n8n-nodes-base.telegram",
"typeVersion": 1.2,
"position": [
-700,
-200
],
"id": "e8bafb65-5a31-4bea-9777-41578c66ac59",
"name": "Descargar Audio",
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"resource": "audio",
"operation": "transcribe",
"options": {
"language": "es"
}
},
"type": "@n8n/n8n-nodes-langchain.openAi",
"typeVersion": 1.8,
"position": [
-480,
-200
],
"id": "8e194d08-b8d7-4588-9a85-ad286d655c0a",
"name": "Transcribir",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"chatId": "={{ $('Telegram Trigger').item.json.message.chat.id }}",
"text": "={{ $json.output }}",
"additionalFields": {
"appendAttribution": false
}
},
"type": "n8n-nodes-base.telegram",
"typeVersion": 1.2,
"position": [
500,
-100
],
"id": "97258778-aad1-44a8-bb75-e7db2d7dbdbb",
"name": "Telegram",
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"model": {
"__rl": true,
"value": "gpt-4.1-mini",
"mode": "list",
"cachedResultName": "gpt-4.1-mini"
},
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"typeVersion": 1.2,
"position": [
-240,
120
],
"id": "6e5f1846-3014-49cf-8149-6c8a7ad88aae",
"name": "OpenAI 4.1 mini",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
}
],
"connections": {
"Simple Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"MCP Gmail": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"MCP Calendario": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"MCP Contactos": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Telegram Trigger": {
"main": [
[
{
"node": "Switch",
"type": "main",
"index": 0
}
]
]
},
"Switch": {
"main": [
[
{
"node": "Descargar Audio",
"type": "main",
"index": 0
}
],
[
{
"node": "Edit Fields",
"type": "main",
"index": 0
}
]
]
},
"Descargar Audio": {
"main": [
[
{
"node": "Transcribir",
"type": "main",
"index": 0
}
]
]
},
"Transcribir": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"Edit Fields": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "Telegram",
"type": "main",
"index": 0
}
]
]
},
"OpenAI 4.1 mini": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1",
"callerPolicy": "workflowsFromSameOwner",
"errorWorkflow": "nAWcsFqEIMIvT733",
"timezone": "Europe/Madrid"
},
"versionId": "c45c3f2e-8f9b-406c-8e5e-240bbe17590e",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "l2SLrP1k0gYbnG63",
"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.
openAiApitelegramApi
Pro
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About this workflow
Multiagente MCP. Uses agent, memoryBufferWindow, mcpClientTool, telegramTrigger. Event-driven trigger; 12 nodes.
Source: https://github.com/DragonJAR/n8n-workflows-esp/blob/5b7d3b288093125a02c8d1034fbf6107b85e4974/workflows/01553-Multiagente_MCP.json — original creator credit. Request a take-down →
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