{
"name": "My workflow",
"nodes": [
{
"parameters": {
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"typeVersion": 1.1,
"position": [
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],
"id": "4f82bd7f-8ce8-4460-96e8-5ba3473d1e2f",
"name": "When chat message received",
"webhookId": "3af274c6-8b58-43ef-96b3-88c9d13f48a8"
},
{
"parameters": {
"options": {
"systemMessage": "You are my intelligent personal assistant. Your role is to help me think critically, access structured external knowledge, and solve complex numerical problems. You have access to the following tools:\n\n1. **Think** – Use this tool to reason step-by-step before giving a final answer.\n2. **SerpAPI** – Use this to access verified external knowledge, including encyclopedic or factual data.\n3. **Calculator** – Use this to perform accurate numerical or mathematical computations.\n\nYour goals:\n- Understand my task or question deeply before responding.\n- When unsure, think step-by-step using the `Think` tool.\n- For factual knowledge or concepts, use the `SerpAPI` tool.\n- For numerical tasks or financial calculations, use the `Calculator`.\n- Always explain your steps in a concise and professional way unless instructed otherwise.\n- Keep answers short and efficient unless asked for elaboration.\n\nAlways act as a helpful, private, and reliable personal assistant."
}
},
"id": "6416a26e-c736-44b3-8078-7fef75abe3ab",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
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],
"typeVersion": 2
},
{
"parameters": {},
"id": "1f3491f8-a42f-4fd2-863e-0d9d0bb4de26",
"name": "Think",
"type": "@n8n/n8n-nodes-langchain.toolThink",
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],
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},
{
"parameters": {
"options": {}
},
"id": "23c704f4-c2f3-48e8-86c9-02307313b5e4",
"name": "SerpAPI",
"type": "@n8n/n8n-nodes-langchain.toolSerpApi",
"position": [
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],
"typeVersion": 1,
"credentials": {
"serpApi": {
"id": "GaytWvPESf6C7ew4",
"name": "SerpAPI account"
}
}
},
{
"parameters": {
"modelName": "models/gemini-2.5-flash",
"options": {}
},
"id": "0000e144-2ab0-41e3-9f93-5a386d65f6a7",
"name": "Google Gemini Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"position": [
1080,
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],
"typeVersion": 1,
"credentials": {
"googlePalmApi": {
"id": "DSRez5nluMGqdvIQ",
"name": "Google Gemini(PaLM) Api account"
}
}
},
{
"parameters": {},
"id": "d1d3dbfd-c081-40d2-ba7f-260db6c11d1d",
"name": "Calculator",
"type": "@n8n/n8n-nodes-langchain.toolCalculator",
"position": [
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],
"typeVersion": 1
},
{
"parameters": {},
"id": "25c77336-7dd8-4f31-9097-96e185b1bbfa",
"name": "Simple Memory",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
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],
"typeVersion": 1.3
},
{
"parameters": {
"content": "## 👆\nThis is a short term memory. It will remember the 5 previous interactions during the chat",
"height": 180,
"width": 150,
"color": 7
},
"id": "d7123b8f-fd52-4c5f-9897-fac05a519965",
"name": "Sticky Note17",
"type": "n8n-nodes-base.stickyNote",
"position": [
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],
"typeVersion": 1
},
{
"parameters": {
"content": "## 👆\nYou can use the free Google Gemini options.",
"height": 180,
"width": 170,
"color": 7
},
"id": "ca0b5201-0c5f-4ec3-a93c-0e6349fb407f",
"name": "Sticky Note18",
"type": "n8n-nodes-base.stickyNote",
"position": [
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],
"typeVersion": 1
},
{
"parameters": {
"content": "## 👆\nThe Calculator is a tool that allows an agent to run mathematical calculations.",
"height": 180,
"width": 150,
"color": 7
},
"id": "377c0265-4db2-42bc-ae85-b06d133033ab",
"name": "Sticky Note19",
"type": "n8n-nodes-base.stickyNote",
"position": [
1700,
100
],
"typeVersion": 1
},
{
"parameters": {
"content": "## 👆\nThe Think is a tool Enables step-by-step reasoning before answering.",
"height": 180,
"width": 150,
"color": 7
},
"id": "b2f18010-fe16-4ecf-998f-5b17eabc04f8",
"name": "Sticky Note20",
"type": "n8n-nodes-base.stickyNote",
"position": [
1500,
100
],
"typeVersion": 1
},
{
"parameters": {
"content": "## 👆\nThe SerpAPI is a tool that allows Performs real-time Google Search using SerpAPI to retrieve factual, up-to-date information.",
"height": 240,
"width": 150,
"color": 7
},
"id": "912891fe-ab1c-428b-a00e-0d252c130d5e",
"name": "Sticky Note21",
"type": "n8n-nodes-base.stickyNote",
"position": [
1900,
100
],
"typeVersion": 1
}
],
"pinData": {},
"connections": {
"Think": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"SerpAPI": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Calculator": {
"ai_tool": [
[
{
"node": "AI Agent",
"type": "ai_tool",
"index": 0
}
]
]
},
"Simple Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"When chat message received": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "87ed98ea-8273-4ff3-9267-a5909af5bcb8",
"meta": {
"templateCredsSetupCompleted": true,
"instanceId": "558d88703fb65b2d0e44613bc35916258b0f0bf983c5d4730c00c424b77ca36a"
},
"id": "hlRhH3gaFbLMbgau",
"tags": []
}