{"workflow":{"id":14427,"name":"Support student questions via LINE using Gemini, Google Drive, and Slack","views":36,"recentViews":2,"totalViews":36,"createdAt":"2026-03-29T05:50:06.412Z","description":"## Who is this for\nThis workflow is built for tutoring schools, cram schools, and independent teachers who want to offer students 24/7 Q&A support via LINE — Japan's most widely used messaging app. No coding knowledge is required to set it up.\n\n## What this workflow does\nWhen a student sends a question on LINE, an AI Agent (powered by Gemini) reads the conversation history stored in Google Sheets, searches your teaching materials in Google Drive, and replies with a clear explanation directly in LINE.\nIf the agent cannot find a confident answer — for example, the topic is not covered in the materials or the question is too complex — it automatically sends an escalation alert to a designated Slack channel so a teacher can follow up personally.\nThe agent also logs every question and its resolution status to Google Sheets, giving teachers a running record of each student's weak points and question frequency.\n\n## How to set up\n1. Connect your LINE Messaging API credentials in n8n.\n2. Create a Google Sheet with columns: student ID, timestamp, question, answer, resolved (yes/no).\n3. Upload your teaching materials (PDF or text files) to a Google Drive folder.\n4. Set the Drive folder ID and Sheet ID in the Set Fields node.\n5. Add your Slack webhook URL for teacher escalation notifications.\n6. Activate the workflow and share the LINE bot link with students.\n\n## Requirements\nLINE Messaging API channel (free tier works)\nGoogle Drive folder with study materials (PDF or .txt)\nGoogle Sheets spreadsheet for conversation history and progress tracking\nSlack incoming webhook URL\nGemini API key (free tier available)\n\n## How to customize\nYou can swap Google Drive for a different file source, adjust the Gemini prompt in the AI Agent node to change the explanation style (e.g., simpler language for younger students), or add more Slack channels to route questions by subject. The escalation threshold can be tuned by editing the condition in the If node.\n","workflow":{"id":"yoejDyiyt2PqSumk","meta":{"instanceId":"0edf8f12ee9c15a4a138527d5c68964189213a94c7f3c35da2ece5938b6a2639"},"name":"Support student questions via LINE with an AI Agent, Google Drive, and Slack","tags":[],"nodes":[{"id":"ce706c6e-909b-4f87-a88c-6f17d38e00ad","name":"LINE Receiver","type":"n8n-nodes-base.webhook","position":[208,368],"webhookId":"line-study-bot","parameters":{"path":"line-study-bot","options":{},"httpMethod":"POST","responseMode":"responseNode"},"typeVersion":2},{"id":"756a1f04-9868-4079-88d2-745e54788b36","name":"Acknowledge LINE","type":"n8n-nodes-base.respondToWebhook","position":[432,272],"parameters":{"options":{},"respondWith":"json","responseBody":"={\"status\":\"ok\"}"},"typeVersion":1.1},{"id":"e60e1ffb-0a15-4f25-99c1-52b0756211c9","name":"Set Config","type":"n8n-nodes-base.set","position":[432,464],"parameters":{"options":{},"assignments":{"assignments":[{"id":"cfg-1","name":"userId","type":"string","value":"={{ $json.body.events[0].source.userId }}"},{"id":"cfg-2","name":"replyToken","type":"string","value":"={{ $json.body.events[0].replyToken }}"},{"id":"cfg-3","name":"userMessage","type":"string","value":"={{ $json.body.events[0].message.text }}"},{"id":"cfg-4","name":"sheetsId","type":"string","value":"YOUR_GOOGLE_SHEETS_ID"},{"id":"cfg-5","name":"driveFolderId","type":"string","value":"YOUR_GOOGLE_DRIVE_FOLDER_ID"},{"id":"cfg-6","name":"slackWebhookUrl","type":"string","value":"YOUR_SLACK_WEBHOOK_URL"},{"id":"cfg-7","name":"lineChannelToken","type":"string","value":"YOUR_LINE_CHANNEL_ACCESS_TOKEN"}]}},"typeVersion":3.4},{"id":"4199df73-4e88-455e-8e1e-abc361212d95","name":"Load Chat History","type":"n8n-nodes-base.googleSheets","position":[656,464],"parameters":{"operation":"readRows","documentId":{"__rl":true,"mode":"id","value":"={{ $json.sheetsId }}"}},"typeVersion":4.5},{"id":"8c13e03f-5b6f-4bba-a593-fb5ac75f4b18","name":"Aggregate History","type":"n8n-nodes-base.aggregate","position":[880,464],"parameters":{"options":{},"aggregate":"aggregateAllItemData"},"typeVersion":1},{"id":"28d5c2b6-dd4f-4e0d-8bcb-0e8eb25c7846","name":"Study Agent","type":"@n8n/n8n-nodes-langchain.agent","position":[1104,464],"parameters":{"text":"=Student question: {{ $('Set Config').item.json.userMessage }}\n\nPast conversation history (recent 10 exchanges):\n{{ JSON.stringify($json.data.slice(-10)) }}","agent":"conversationalAgent","options":{"systemMessage":"You are a helpful study support assistant for students (elementary to high school level). Your job is to answer academic questions clearly and encouragingly.\n\nYou have access to three tools:\n1. search_materials — Search the school's teaching materials in Google Drive. Always try this first.\n2. save_progress — Log the question and your answer to Google Sheets after you respond.\n3. escalate_to_teacher — Use this ONLY when you cannot find a confident answer in the materials. Send the student's question to the teacher via Slack.\n\nRules:\n- Always search materials before answering.\n- Keep explanations simple and age-appropriate.\n- If you escalate, tell the student: 'I've asked your teacher. They'll follow up with you soon!'\n- After every response (escalated or not), call save_progress to log the interaction.\n- Respond in Japanese."},"promptType":"define"},"typeVersion":1.7},{"id":"4c3e33c9-6141-4db7-af0d-4d0c5eed2151","name":"Gemini Model","type":"@n8n/n8n-nodes-langchain.lmChatGoogleGemini","position":[1120,688],"parameters":{"options":{"temperature":0.3}},"credentials":{"googlePalmApi":{"id":"4MMAqsbXeWXPlhP3","name":"Google Gemini(PaLM) Api account"}},"typeVersion":1},{"id":"a4e081ad-e55f-4585-afd4-cabc8b93e24a","name":"Search Materials Tool","type":"@n8n/n8n-nodes-langchain.toolWorkflow","position":[1248,688],"parameters":{"name":"search_materials","workflowId":{"__rl":true,"mode":"id","value":"={{ $workflow.id }}"},"description":"Search the teaching materials stored in Google Drive. Use this to find explanations, formulas, or examples related to the student's question. Input: a search query string.","workflowInputs":{"schema":[{"id":"q","type":"string","required":true,"displayName":"query"}]}},"typeVersion":2},{"id":"a95f28e9-53d4-48d0-b49d-40e355eecf0d","name":"Reply via LINE","type":"n8n-nodes-base.httpRequest","position":[1456,464],"parameters":{"url":"https://api.line.me/v2/bot/message/reply","method":"POST","options":{},"sendBody":true,"sendHeaders":true,"bodyParameters":{"parameters":[{"name":"replyToken","value":"={{ $('Set Config').item.json.replyToken }}"},{"name":"messages","value":"=[{\"type\":\"text\",\"text\":\"{{ $json.output }}\"}]"}]},"headerParameters":{"parameters":[{"name":"Authorization","value":"=Bearer {{ $('Set Config').item.json.lineChannelToken }}"},{"name":"Content-Type","value":"application/json"}]}},"typeVersion":4.2},{"id":"773d23c3-ce04-4696-91b8-2496d5d14bc7","name":"Sticky Note — Overview","type":"n8n-nodes-base.stickyNote","position":[-384,-64],"parameters":{"width":456,"height":620,"content":"### How it works\n\nStudents send any study question to your LINE bot. The AI Agent reads their conversation history from Google Sheets, searches your uploaded teaching materials in Google Drive, and replies with a clear explanation directly in LINE.\n\nIf the agent can't find a solid answer in the materials, it flags the question and pings the designated Slack channel so a teacher can step in.\n\nEvery question is logged to Google Sheets with the student's ID, subject, and whether it was resolved — giving you a clear picture of what topics need more attention.\n\n### Setup steps\n\n1. Add your LINE Messaging API credentials.\n2. Set the Google Sheets ID (conversation log) in the **Set Config** node.\n3. Set the Google Drive folder ID (teaching materials) in the **Set Config** node.\n4. Add your Slack webhook URL in the **Set Config** node.\n5. Activate and share the LINE bot link with students."},"typeVersion":1},{"id":"441aa96e-3179-4581-acbf-557b6317d839","name":"Sticky Note — Input","type":"n8n-nodes-base.stickyNote","position":[128,96],"parameters":{"color":7,"width":392,"height":152,"content":"## Receive student message\nCaptures incoming LINE messages and extracts the student's user ID and text."},"typeVersion":1},{"id":"f8d5c455-f892-4867-97a7-e22c43454539","name":"Sticky Note — Config","type":"n8n-nodes-base.stickyNote","position":[256,576],"parameters":{"color":7,"width":312,"height":136,"content":"## Set all config here\nUpdate Sheet ID, Drive folder ID, Slack webhook URL, and LINE token in this single node before activating."},"typeVersion":1},{"id":"2e1b7b6d-6101-4ec6-8564-d2270cd7c181","name":"Sticky Note — History","type":"n8n-nodes-base.stickyNote","position":[592,624],"parameters":{"color":7,"width":292,"height":184,"content":"## Load conversation history\nFetches the student's past Q&A from Google Sheets to give the agent context."},"typeVersion":1},{"id":"5cb4a1af-4209-4576-b6b8-3218833a9665","name":"Sticky Note — Agent","type":"n8n-nodes-base.stickyNote","position":[912,272],"parameters":{"color":7,"width":388,"height":120,"content":"## AI Agent\nJudges intent, searches Drive materials, generates a reply, and decides whether to escalate to a teacher via Slack."},"typeVersion":1},{"id":"0435acb6-aa21-4bfa-8819-8ba280e66f79","name":"Sticky Note — Tools","type":"n8n-nodes-base.stickyNote","position":[912,816],"parameters":{"color":7,"width":448,"height":132,"content":"## Agent tools\nDrive: search materials. Sheets: log the result. Slack: alert teacher if unresolved."},"typeVersion":1},{"id":"a046b88a-c2d1-4d3e-bfba-5e9d9229dbcb","name":"Sticky Note — Reply","type":"n8n-nodes-base.stickyNote","position":[1440,624],"parameters":{"color":7,"width":288,"height":132,"content":"## Reply to student\nSends the agent's answer back via the LINE Reply API."},"typeVersion":1}],"active":false,"pinData":{},"settings":{"binaryMode":"separate","executionOrder":"v1"},"versionId":"a6f72838-dff1-4ce6-a58d-bcd5f55cfde4","connections":{"Set Config":{"main":[[{"node":"Load Chat History","type":"main","index":0}]]},"Study Agent":{"main":[[{"node":"Reply via LINE","type":"main","index":0}]]},"Gemini Model":{"ai_languageModel":[[{"node":"Study Agent","type":"ai_languageModel","index":0}]]},"LINE Receiver":{"main":[[{"node":"Acknowledge LINE","type":"main","index":0},{"node":"Set Config","type":"main","index":0}]]},"Aggregate History":{"main":[[{"node":"Study Agent","type":"main","index":0}]]},"Load Chat History":{"main":[[{"node":"Aggregate History","type":"main","index":0}]]},"Search Materials Tool":{"ai_tool":[[{"node":"Study Agent","type":"ai_tool","index":0}]]}}},"lastUpdatedBy":1,"workflowInfo":{"nodeCount":16,"nodeTypes":{"n8n-nodes-base.set":{"count":1},"n8n-nodes-base.webhook":{"count":1},"n8n-nodes-base.aggregate":{"count":1},"n8n-nodes-base.stickyNote":{"count":7},"n8n-nodes-base.httpRequest":{"count":1},"n8n-nodes-base.googleSheets":{"count":1},"@n8n/n8n-nodes-langchain.agent":{"count":1},"n8n-nodes-base.respondToWebhook":{"count":1},"@n8n/n8n-nodes-langchain.toolWorkflow":{"count":1},"@n8n/n8n-nodes-langchain.lmChatGoogleGemini":{"count":1}}},"status":"published","readyToDemo":null,"user":{"name":"Ryo Sayama","username":"sayama","bio":"Specializing in automation and AI integration, with a focus on business efficiency through n8n workflows.","verified":true,"links":[""],"avatar":"https://gravatar.com/avatar/e7a6841bff73152428e7f1737ffd2e1d10b43a23b7bf83bc2ffe6ecafb2e2adf?r=pg&d=retro&size=200"},"nodes":[{"id":18,"icon":"file:googleSheets.svg","name":"n8n-nodes-base.googleSheets","codex":{"data":{"alias":["CSV","Sheet","Spreadsheet","GS"],"resources":{"generic":[{"url":"https://n8n.io/blog/love-at-first-sight-ricardos-n8n-journey/","icon":"❤️","label":"Love at first sight: Ricardo’s n8n journey"},{"url":"https://n8n.io/blog/why-business-process-automation-with-n8n-can-change-your-daily-life/","icon":"🧬","label":"Why business process automation with n8n can change your daily life"},{"url":"https://n8n.io/blog/automatically-adding-expense-receipts-to-google-sheets-with-telegram-mindee-twilio-and-n8n/","icon":"🧾","label":"Automatically Adding Expense Receipts to Google Sheets with Telegram, Mindee, Twilio, and n8n"},{"url":"https://n8n.io/blog/supercharging-your-conference-registration-process-with-n8n/","icon":"🎫","label":"Supercharging your conference registration process with n8n"},{"url":"https://n8n.io/blog/creating-triggers-for-n8n-workflows-using-polling/","icon":"⏲","label":"Creating triggers for n8n workflows using polling"},{"url":"https://n8n.io/blog/no-code-ecommerce-workflow-automations/","icon":"store","label":"6 e-commerce workflows to power up your Shopify s"},{"url":"https://n8n.io/blog/migrating-community-metrics-to-orbit-using-n8n/","icon":"📈","label":"Migrating Community Metrics to Orbit using n8n"},{"url":"https://n8n.io/blog/automate-google-apps-for-productivity/","icon":"💡","label":"15 Google apps you can combine and automate to increase productivity"},{"url":"https://n8n.io/blog/your-business-doesnt-need-you-to-operate/","icon":" 🖥️","label":"Hey founders! 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