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 →
{
"id": "[CENSORED]",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "(G) LineChatBot + Google Sheets (as a memory)",
"tags": [
{
"id": "[CENSORED]",
"name": "Guitar",
"createdAt": "2025-04-18T08:59:48.308Z",
"updatedAt": "2025-04-18T08:59:48.308Z"
}
],
"nodes": [
{
"id": "[CENSORED]",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
560,
-500
],
"parameters": {
"path": "guitarpa",
"options": {},
"httpMethod": "POST"
},
"typeVersion": 2
},
{
"id": "[CENSORED]",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
460,
-220
],
"parameters": {
"text": "={{ $json.Prompt }}",
"options": {
"systemMessage": "=You are a helpful assistant. Your name is \"\u0e25\u0e25\u0e34\u0e15\u0e32\". You will help me in everything I need. You will answer based on user language. You are an AI Agent operating in the Thailand time zone (Asia/Bangkok, UTC+7). Today is {{ $now }}."
},
"promptType": "define",
"hasOutputParser": true
},
"typeVersion": 1.8
},
{
"id": "[CENSORED]",
"name": "Google Gemini Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"position": [
460,
-20
],
"parameters": {
"options": {},
"modelName": "models/gemini-2.0-flash-001"
},
"credentials": {
"googlePalmApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Edit Fields",
"type": "n8n-nodes-base.set",
"position": [
780,
-500
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "[CENSORED]",
"name": "body.events[0].message.text",
"type": "string",
"value": "={{ $('Webhook').item.json.body.events[0].message.text }}"
},
{
"id": "[CENSORED]",
"name": "body.events[0].replyToken",
"type": "string",
"value": "={{ $('Webhook').item.json.body.events[0].replyToken }}"
},
{
"id": "[CENSORED]",
"name": "body.events[0].source.userId",
"type": "string",
"value": "={{ $json.body.events[0].source.userId }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "[CENSORED]",
"name": "HTTP Request",
"type": "n8n-nodes-base.httpRequest",
"position": [
1276,
-220
],
"parameters": {
"url": "https://api.line.me/v2/bot/message/reply",
"method": "POST",
"options": {},
"jsonBody": "={\n \"replyToken\": \"{{ $('Edit Fields').item.json.body.events[0].replyToken }}\",\n \"messages\": [\n {\n \"type\": \"text\",\n \"text\": \"{{ $('AI Agent').item.json.output.replaceAll('\\t', ' ').replaceAll('\\\"', '\\\\\\\"').replaceAll('\\n', '\\\\n').trim() || 'No response available.' }}\"\n }\n ]\n}",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "Bearer [CENSORED]"
},
{
"name": "Content-Type",
"value": "application/json"
}
]
}
},
"typeVersion": 4.2
},
{
"id": "[CENSORED]",
"name": "Get History",
"type": "n8n-nodes-base.googleSheets",
"position": [
1000,
-500
],
"parameters": {
"options": {
"outputFormatting": {
"values": {
"date": "FORMATTED_STRING",
"general": "UNFORMATTED_VALUE"
}
},
"returnFirstMatch": true,
"dataLocationOnSheet": {
"values": {
"rangeDefinition": "detectAutomatically"
}
}
},
"filtersUI": {
"values": [
{
"lookupValue": "={{ $('Webhook').item.json.body.events[0].source.userId }}",
"lookupColumn": "UserID "
}
]
},
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "[CENSORED]",
"cachedResultName": "Sheet1"
},
"documentId": {
"__rl": true,
"mode": "id",
"value": "[CENSORED]"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
},
"notesInFlow": false,
"typeVersion": 4.5,
"alwaysOutputData": true
},
{
"id": "[CENSORED]",
"name": "Prepare Prompt",
"type": "n8n-nodes-base.set",
"position": [
1220,
-500
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "[CENSORED]",
"name": "Prompt",
"type": "string",
"value": "={{\n \"\u0e04\u0e38\u0e13\u0e04\u0e37\u0e2d\u0e25\u0e25\u0e34\u0e15\u0e32 \u0e41\u0e0a\u0e17\u0e1a\u0e2d\u0e17\u0e20\u0e32\u0e29\u0e32\u0e44\u0e17\u0e22\u0e17\u0e35\u0e48\u0e2a\u0e38\u0e20\u0e32\u0e1e\u0e41\u0e25\u0e30\u0e40\u0e1b\u0e47\u0e19\u0e21\u0e34\u0e15\u0e23 \u0e15\u0e2d\u0e1a\u0e15\u0e32\u0e21\u0e1a\u0e23\u0e34\u0e1a\u0e17\u0e02\u0e2d\u0e07\u0e01\u0e32\u0e23\u0e2a\u0e19\u0e17\u0e19\u0e32:\\n\" +\n\n ($('Get History').item.json.History_Archive_1 || \"\") +\n (($('Get History').item.json.History_Archive_1) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History_Archive_2 || \"\") +\n (($('Get History').item.json.History_Archive_2) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History_Archive_3 || \"\") +\n (($('Get History').item.json.History_Archive_3) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History_Archive_4 || \"\") +\n (($('Get History').item.json.History_Archive_4) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History || \"\") +\n (($('Get History').item.json.History) ? \"\\n\" : \"\") +\n\n \"\u0e1c\u0e39\u0e49\u0e43\u0e0a\u0e49: \" + $('Edit Fields').item.json.body.events[0].message.text + \"\\n\u0e25\u0e25\u0e34\u0e15\u0e32: \"\n}}\n"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "[CENSORED]",
"name": "Save History",
"type": "n8n-nodes-base.googleSheets",
"position": [
1056,
-220
],
"parameters": {
"columns": {
"value": {
"History": "={{ $('Split History').item.json.historyToSave }}",
"UserID ": "={{ $('Edit Fields').item.json.body.events[0].source.userId }}",
"LastUpdated": "={{ new Date().toISOString() }}",
"History_Archive_1": "={{ $('Split History').item.json.historyArchive1 }}",
"History_Archive_2": "={{ $('Split History').item.json.historyArchive2 }}",
"History_Archive_3": "={{ $('Split History').item.json.historyArchive3 }}",
"History_Archive_4": "={{ $('Split History').item.json.historyArchive4 }}"
},
"schema": [
{
"id": "UserID ",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "UserID ",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "History",
"type": "string",
"display": true,
"required": false,
"displayName": "History",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "LastUpdated",
"type": "string",
"display": true,
"required": false,
"displayName": "LastUpdated",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "History_Archive_1",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "History_Archive_1",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "History_Archive_2",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "History_Archive_2",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "History_Archive_3",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "History_Archive_3",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "History_Archive_4",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "History_Archive_4",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "row_number",
"type": "string",
"display": true,
"removed": true,
"readOnly": true,
"required": false,
"displayName": "row_number",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [
"UserID "
],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "appendOrUpdate",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "[CENSORED]",
"cachedResultName": "Sheet1"
},
"documentId": {
"__rl": true,
"mode": "id",
"value": "[CENSORED]"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.5
},
{
"id": "[CENSORED]",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
460,
-560
],
"parameters": {
"content": "### Connect to Line Official Account's API"
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
740,
-560
],
"parameters": {
"width": 180,
"content": "Prepare the data"
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
960,
-560
],
"parameters": {
"width": 180,
"content": "Retrieve chat history"
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
1180,
-560
],
"parameters": {
"width": 180,
"content": "Give our AI previous chat history"
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
460,
-280
],
"parameters": {
"content": "Get input with this command. \"{{ $json.Prompt }}\""
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
780,
-280
],
"parameters": {
"width": 180,
"content": "Split history into small chunks (data cleaning)"
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Split History",
"type": "n8n-nodes-base.code",
"position": [
840,
-220
],
"parameters": {
"jsCode": "// Get the current history, new message, and response\nlet history = $('Get History').item.json.History || '';\nlet message = $('Edit Fields').item.json.body.events[0].message.text;\nlet response = $json.output;\nlet newExchange = `\u0e1c\u0e39\u0e49\u0e43\u0e0a\u0e49: ${message}\\n\u0e25\u0e25\u0e34\u0e15\u0e32: ${response}`;\nlet updatedHistory = history + (history ? '\\n' : '') + newExchange;\n\n// Threshold: 70% of Google Sheets cell limit (50,000 characters * 0.7 = 35,000)\nconst threshold = 35000;\nlet historyToSave = updatedHistory;\nlet archive1 = $('Get History').item.json.History_Archive_1 || '';\nlet archive2 = $('Get History').item.json.History_Archive_2 || '';\nlet archive3 = $('Get History').item.json.History_Archive_3 || '';\nlet archive4 = $('Get History').item.json.History_Archive_4 || '';\n\n// If history exceeds threshold, split it\nif (updatedHistory.length > threshold) {\n // Keep the last 17,500 characters in History (half of threshold for balance)\n const keepLength = 17500;\n const archiveChunk = updatedHistory.substring(0, updatedHistory.length - keepLength);\n historyToSave = updatedHistory.substring(updatedHistory.length - keepLength);\n\n // Distribute to archive cells, ensuring none exceed 35,000 characters\n if (archive1.length < threshold) {\n archive1 = (archive1 ? archive1 + '\\n' : '') + archiveChunk;\n if (archive1.length > threshold) {\n const excess = archive1.substring(threshold);\n archive1 = archive1.substring(0, threshold);\n if (archive2.length < threshold) {\n archive2 = (archive2 ? archive2 + '\\n' : '') + excess;\n }\n }\n }\n if (archive2.length < threshold && archive1.length >= threshold) {\n archive2 = (archive2 ? archive2 + '\\n' : '') + archiveChunk;\n if (archive2.length > threshold) {\n const excess = archive2.substring(threshold);\n archive2 = archive2.substring(0, threshold);\n if (archive3.length < threshold) {\n archive3 = (archive3 ? archive3 + '\\n' : '') + excess;\n }\n }\n }\n if (archive3.length < threshold && archive2.length >= threshold) {\n archive3 = (archive3 ? archive3 + '\\n' : '') + archiveChunk;\n if (archive3.length > threshold) {\n const excess = archive3.substring(threshold);\n archive3 = archive3.substring(0, threshold);\n if (archive4.length < threshold) {\n archive4 = (archive4 ? archive4 + '\\n' : '') + excess;\n }\n }\n }\n if (archive4.length < threshold && archive3.length >= threshold) {\n archive4 = (archive4 ? archive4 + '\\n' : '') + archiveChunk;\n if (archive4.length > threshold) {\n archive4 = archive4.substring(0, threshold);\n }\n }\n}\n\n// Return the values to update\nreturn [\n {\n json: {\n historyToSave: historyToSave,\n historyArchive1: archive1,\n historyArchive2: archive2,\n historyArchive3: archive3,\n historyArchive4: archive4,\n lastUpdated: new Date().toISOString()\n }\n }\n];"
},
"typeVersion": 2
},
{
"id": "[CENSORED]",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
1000,
-280
],
"parameters": {
"width": 180,
"content": "Save to Google Sheets"
},
"typeVersion": 1
},
{
"id": "[CENSORED]",
"name": "Sticky Note7",
"type": "n8n-nodes-base.stickyNote",
"position": [
1220,
-280
],
"parameters": {
"width": 180,
"content": "Send it back to Line"
},
"typeVersion": 1
}
],
"active": true,
"settings": {
"executionOrder": "v1"
},
"versionId": "[CENSORED]",
"connections": {
"Webhook": {
"main": [
[
{
"node": "Edit Fields",
"type": "main",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "Split History",
"type": "main",
"index": 0
}
]
]
},
"Edit Fields": {
"main": [
[
{
"node": "Get History",
"type": "main",
"index": 0
}
]
]
},
"Get History": {
"main": [
[
{
"node": "Prepare Prompt",
"type": "main",
"index": 0
}
]
]
},
"Save History": {
"main": [
[
{
"node": "HTTP Request",
"type": "main",
"index": 0
}
]
]
},
"Split History": {
"main": [
[
{
"node": "Save History",
"type": "main",
"index": 0
}
]
]
},
"Prepare Prompt": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
}
}
}
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.
googlePalmApigoogleSheetsOAuth2Api
About this workflow
(G) LineChatBot + Google Sheets (as a memory). Uses agent, lmChatGoogleGemini, httpRequest, googleSheets. Webhook trigger; 17 nodes.
Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →