This workflow follows the Agent → Documentdefaultdataloader 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": "DermAI",
"nodes": [
{
"parameters": {
"updates": [
"message"
],
"additionalFields": {}
},
"type": "n8n-nodes-base.telegramTrigger",
"typeVersion": 1.3,
"position": [
-32,
208
],
"id": "d54a29db-eb24-4fcb-9b44-5cbc2a584917",
"name": "Telegram Trigger",
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"promptType": "define",
"text": "={{ $json.message.text }}",
"options": {
"systemMessage": "You are a helpfEres un especialista amigable y cercano en cuidado de la piel (skincare). Tu nombre es DermAI, pero te comunicas de forma natural, relajada y muy humana, como si le estuvieras escribiendo un mensaje por Telegram a un amigo o cliente en tu consulta.\n\nOBJETIVO PRINCIPAL:\nAyudar al usuario con dudas sobre su piel usando la informaci\u00f3n de la base de conocimientos, pero expres\u00e1ndola siempre con tus propias palabras de forma fluida, clara y conversacional.\n\nREGLAS DE ESTILO Y TONO (ESTRICTO):\n1. TONO HUMANO Y NATURAL: Habla de forma directa, cercana y emp\u00e1tica. Evita lenguaje excesivamente corporativo, cl\u00ednico o acartonado. Usa p\u00e1rrafos cortos y f\u00e1ciles de leer en un celular.\n2. NUNCA USES FRASES ROB\u00d3TICAS O PROMPT DE PLANTILLA. Queda estrictamente prohibido usar frases como:\n - \"Para obtener una recomendaci\u00f3n m\u00e1s precisa...\"\n - \"Puedes preguntar cosas como...\"\n - \"\u00bfTe gustar\u00eda continuar con esta pregunta?\"\n - \"Como modelo de IA...\" o \"Seg\u00fan mi base de datos...\"\n3. INTEGRACI\u00d3N DE INFORMACI\u00d3N: Cuando consultes tu herramienta de conocimiento (Vector Store), no copies ni pegues fragmentos directos del documento. Resume los consejos e ingredientes clave y expl\u00edcalos de forma sencilla.\n\nDIN\u00c1MICA DE LA CONVERSACI\u00d3N:\n- S\u00e9 org\u00e1nico: Si la duda del usuario es clara y directa, dale una respuesta concisa y \u00fatil sin rodeos.\n- Preguntas de seguimiento (\u00daSALAS SOLO SI APORTAN VALOR): \n - Si para darle un mejor consejo necesitas saber su tipo de piel, si usa alg\u00fan producto actualmente o qu\u00e9 s\u00edntomas exactos tiene, hazle UNA sola pregunta natural al final (Ejemplo: \"Por cierto, \u00bfqu\u00e9 tipo de piel tienes, grasa o seca?\", o \"\u00bfActualmente est\u00e1s usando alguna crema o serum?\").\n - Si la respuesta que diste ya fue completa y no necesitas indagar m\u00e1s, simplemente cierra de forma cordial ofreciendo ayuda si le surge otra duda (Ejemplo: \"Cualquier otra duda me dices, \u00bfvale?\", o \"Avisame si te puedo ayudar con algo m\u00e1s\").\n\nRECUERDA: La conversaci\u00f3n debe sentirse como un chat fluido de Telegram entre dos personas, no como un manual o un men\u00fa de opciones.ul assistant"
}
},
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 3.1,
"position": [
224,
0
],
"id": "ae4c308d-6a93-4b31-b814-bdac41e6b6b9",
"name": "AI Agent"
},
{
"parameters": {
"model": "qwen2.5-coder:7b",
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.lmChatOllama",
"typeVersion": 1,
"position": [
192,
224
],
"id": "fd4bd99d-b496-4b53-95ad-35e5701fff66",
"name": "Ollama Chat Model",
"credentials": {
"ollamaApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"mode": "retrieve-as-tool",
"toolDescription": "\u00dasala siempre que el usuario haga preguntas sobre skincare, rutinas de cuidado de la piel, ingredientes cosm\u00e9ticos, acn\u00e9, manchas o problemas dermatol\u00f3gicos, para buscar informaci\u00f3n t\u00e9cnica y confiable en los documentos cargados.",
"memoryKey": {
"__rl": true,
"mode": "list",
"value": "vector_store_key"
}
},
"type": "@n8n/n8n-nodes-langchain.vectorStoreInMemory",
"typeVersion": 1.3,
"position": [
320,
224
],
"id": "cd987355-8b7c-40f8-a334-c84b6bd022a1",
"name": "Simple Vector Store"
},
{
"parameters": {
"model": "nomic-embed-text:latest"
},
"type": "@n8n/n8n-nodes-langchain.embeddingsOllama",
"typeVersion": 1,
"position": [
400,
432
],
"id": "a3f60029-5394-470b-bc6d-ede67e699c42",
"name": "Embeddings Ollama",
"credentials": {
"ollamaApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"mode": "insert",
"memoryKey": {
"__rl": true,
"mode": "list",
"value": "vector_store_key"
}
},
"type": "@n8n/n8n-nodes-langchain.vectorStoreInMemory",
"typeVersion": 1.3,
"position": [
1568,
-32
],
"id": "a84ba7bb-48e1-4ebc-83c3-a072a9afba32",
"name": "Simple Vector Store1"
},
{
"parameters": {
"model": "nomic-embed-text:latest"
},
"type": "@n8n/n8n-nodes-langchain.embeddingsOllama",
"typeVersion": 1,
"position": [
1232,
240
],
"id": "2aff6c48-57ea-471a-8d71-5e61a3551faf",
"name": "Embeddings Ollama1",
"credentials": {
"ollamaApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"chunkOverlap": 200,
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
"typeVersion": 1,
"position": [
1440,
480
],
"id": "c45c5f08-fe6f-4aee-8a90-01edba9d80dc",
"name": "Recursive Character Text Splitter"
},
{
"parameters": {
"fileSelector": "C:\\Users\\Jardiel\\.n8n-files\\the-beauty-geeks-guide-to-skin-care-1000-essential-definitions-of-common-product-ingredients-9781641523592-9781641523608_compress.pdf",
"options": {}
},
"type": "n8n-nodes-base.readWriteFile",
"typeVersion": 1.1,
"position": [
1024,
-128
],
"id": "f29c1186-b5b4-4de1-80e7-81b8a5dec761",
"name": "Read/Write Files from Disk"
},
{
"parameters": {
"textSplittingMode": "custom",
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
"typeVersion": 1.1,
"position": [
1440,
256
],
"id": "50788475-0c3f-4382-aaca-40a05a724e8a",
"name": "Default Data Loader"
},
{
"parameters": {
"chatId": "={{ $('Telegram Trigger').item.json.message.chat.id }}",
"text": "={{ $json.output }}",
"additionalFields": {
"appendAttribution": false
}
},
"type": "n8n-nodes-base.telegram",
"typeVersion": 1.2,
"position": [
576,
0
],
"id": "a2e656ed-6b8d-4f37-87dc-d4ea77a4d3d4",
"name": "Send a text message",
"credentials": {
"telegramApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"operation": "pdf",
"options": {}
},
"type": "n8n-nodes-base.extractFromFile",
"typeVersion": 1.1,
"position": [
1360,
-192
],
"id": "eff29dc3-3a92-414f-b369-10d424ca7347",
"name": "Extract from File"
},
{
"parameters": {
"sessionIdType": "customKey",
"sessionKey": "={{ $json.message.chat.id }}"
},
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"typeVersion": 1.4,
"position": [
528,
496
],
"id": "bb98e427-6f5f-4fe5-bfe7-909a853035e8",
"name": "Simple Memory"
}
],
"connections": {
"Telegram Trigger": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"Ollama Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Simple Vector Store": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Embeddings Ollama": {
"ai_embedding": [
[
{
"node": "Simple Vector Store",
"type": "ai_embedding",
"index": 0
}
]
]
},
"Embeddings Ollama1": {
"ai_embedding": [
[
{
"node": "Simple Vector Store1",
"type": "ai_embedding",
"index": 0
}
]
]
},
"Recursive Character Text Splitter": {
"ai_textSplitter": [
[
{
"node": "Default Data Loader",
"type": "ai_textSplitter",
"index": 0
}
]
]
},
"Read/Write Files from Disk": {
"main": [
[
{
"node": "Extract from File",
"type": "main",
"index": 0
}
]
]
},
"Default Data Loader": {
"ai_document": [
[
{
"node": "Simple Vector Store1",
"type": "ai_document",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "Send a text message",
"type": "main",
"index": 0
}
]
]
},
"Extract from File": {
"main": [
[
{
"node": "Simple Vector Store1",
"type": "main",
"index": 0
}
]
]
},
"Simple Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
}
},
"active": true,
"settings": {
"executionOrder": "v1",
"binaryMode": "separate"
},
"versionId": "9de49502-c04c-4776-9987-0e20e6506e90",
"meta": {
"templateCredsSetupCompleted": true
},
"id": "AasE662qQY088pJf",
"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.
ollamaApitelegramApi
Pro
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About this workflow
DermAI. Uses telegramTrigger, agent, lmChatOllama, vectorStoreInMemory. Event-driven trigger; 13 nodes.
Source: https://github.com/JardielVega/DermAI/blob/9e5370805ea0fdb19a70c6971152aa9e1e3cf7da/workflows/DermAI.json — original creator credit. Request a take-down →
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