Workflow: engineer an n8n flow that executes Wait Limit Update Webhook
Integrations: googleSheets, if, limit, merge, scheduleTrigger, set, slack, stickyNote, summarize, wait, webhook

{"meta": {"instanceId": "fddb3e91967f1012c95dd02bf5ad21f279fc44715f47a7a96a33433621caa253", "templateCredsSetupCompleted": true}, "nodes": [{"id": "b717d887-4d4b-4f21-97a3-978fcde2c9f6", "name": "slack_action_payload", "type": "n8n-nodes-base.set", "position": [-1020, 100], "parameters": {"mode": "raw", "options": {}, "jsonOutput": "= {{ $json.body.payload }}"}, "typeVersion": 3.4}, {"id": "046950ad-a40c-47d9-8dab-406bc6bf6e12", "name": "slack_action_drink_data", "type": "n8n-nodes-base.set", "position": [-800, 100], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "3d208143-1b80-4701-bff7-fc1dfbf9b89c", "name": "value", "type": "string", "value": "={{ $json.actions[0].value }}"}, {"id": "1600b553-8ef1-44ac-9ae7-d33be8e539e5", "name": "message_text", "type": "string", "value": "={{ $json.message.text }}"}, {"id": "5ea5f093-7e36-4de0-aa14-fb2bc0788e84", "name": "shortcut_url", "type": "string", "value": "=shortcuts://run-shortcut?name=darrell_water&input="}, {"id": "5d9e4946-10eb-48ed-87d8-978235d44ec1", "name": "shortcut_url_data", "type": "string", "value": "={\"value\":{{ $json.actions[0].value }},\"time\":\"{{ $now.format(\"yyyy-MM-dd\") }}T{{ $now.format(\"HH:mm:ss\") }}\"}"}, {"id": "625258d8-55eb-4252-b313-b4954da57de1", "name": "message_ts", "type": "string", "value": "={{ $json.container.message_ts }}"}]}}, "typeVersion": 3.4}, {"id": "f90ec31c-b63e-470c-84ba-9429539d6bf4", "name": "OpenAI", "type": "@n8n/n8n-nodes-langchain.openAi", "position": [140, -800], "parameters": {"modelId": {"__rl": true, "mode": "list", "value": "gpt-4o-mini", "cachedResultName": "GPT-4O-MINI"}, "options": {"temperature": 1}, "messages": {"values": [{"content": "=Remind to drink water, the last time you drank water was {{ DateTime.fromISO($('combine data').item.json.date +\"T\"+$('combine data').item.json.time).format('yyyy-MM-dd HH:mm:ss') }}\nThe current time is {{ $now.format('yyyy-MM-dd HH:mm:ss') }}\nThe user has drunk water {{ $('combine data').item.json.count_date }} times today"}, {"role": "assistant", "content": "You are a gentle and professional Chinese medicine practitioner who provides health advice in a friendly, encouraging tone. Please generate a response in JSON format with the structure {\"message\": \"...\"}, keeping the message brief (<100-200 words), persuasive, reminding me to drink water, clearly specifying intervals (such as 2 hours), and mentioning at least one benefit of drinking water (such as replenishing qi) and one negative effect of dehydration (such as blood stasis), encouraging me to take action to drink water, ending with an action prompt. Start directly without using any form of address. "}, {"role": "system", "content": "must return {\\\"message\\\": \\\"...\\\"} and **responding in English**"}]}, "jsonOutput": true}, "credentials": {"openAiApi": {"id": "AE7fbXM0LWEUpaUf", "name": "OpenAi account"}}, "typeVersion": 1.8}, {"id": "28fe1f82-a8d6-4a9a-9061-ec94a7344fa3", "name": "Schedule Trigger", "type": "n8n-nodes-base.scheduleTrigger", "position": [-1260, -800], "parameters": {"rule": {"interval": [{"field": "cronExpression", "expression": "=0 {{ Math.floor(Math.random() * 11) }} 8-23 * * *"}]}}, "typeVersion": 1.2}, {"id": "ef12fb27-4377-42be-b9bc-bdbaaaa4c754", "name": "Limit", "type": "n8n-nodes-base.limit", "position": [-840, -640], "parameters": {"keep": "lastItems"}, "typeVersion": 1}, {"id": "e36862e2-912f-4e41-80b0-6f66cc8ba0ba", "name": "Google Sheets - Get Target", "type": "n8n-nodes-base.googleSheets", "position": [-1040, -820], "parameters": {"options": {"returnFirstMatch": false}, "sheetName": {"__rl": true, "mode": "list", "value": 2141999480, "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI/edit#gid=2141999480", "cachedResultName": "setting"}, "documentId": {"__rl": true, "mode": "list", "value": "1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI/edit?usp=drivesdk", "cachedResultName": "n8n-drink-water"}}, "credentials": {"googleSheetsOAuth2Api": {"id": "atsKA0m2aQXeL6i6", "name": "Google Sheets account"}}, "typeVersion": 4.5}, {"id": "9809c9bd-51ff-4277-9f0f-5e1438c25fe8", "name": "Summarize", "type": "n8n-nodes-base.summarize", "position": [-840, -500], "parameters": {"options": {}, "fieldsToSummarize": {"values": [{"field": "value", "aggregation": "sum"}, {"field": "date"}]}}, "typeVersion": 1.1}, {"id": "ca995a95-9c35-43e4-ab68-0f7aa44f99d1", "name": "combine data", "type": "n8n-nodes-base.merge", "position": [-620, -800], "parameters": {"mode": "combine", "options": {}, "combineBy": "combineByPosition", "numberInputs": 3}, "typeVersion": 3}, {"id": "44da169c-a2da-427c-aa46-54082b27e94b", "name": "If", "type": "n8n-nodes-base.if", "position": [-200, -800], "parameters": {"options": {}, "conditions": {"options": {"version": 2, "leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "350fc192-3049-407a-b468-bfdcfbdde966", "operator": {"type": "dateTime", "operation": "after"}, "leftValue": "={{ DateTime.fromISO($('combine data').item.json.date +\"T\"+$('combine data').item.json.time).format('yyyy-MM-dd HH:mm:ss') }}", "rightValue": "={{ $now.minus(30, \"minutes\") }}"}]}}, "typeVersion": 2.2}, {"id": "bc85d85a-cee2-43ab-a434-b26c5cd69122", "name": "Wait", "type": "n8n-nodes-base.wait", "notes": "If the user log water recently. \nWait for another 3x minutes", "position": [-20, -640], "webhookId": "fb26360f-6364-4069-a3f1-ed5c37ecccc0", "parameters": {"unit": "minutes", "amount": "={{ Math.floor(Math.random() * 11) + 21 }}"}, "notesInFlow": true, "typeVersion": 1.1}, {"id": "551c217e-9192-486e-ae9f-068bebd0792a", "name": "slack drink webhook", "type": "n8n-nodes-base.webhook", "position": [-1200, 100], "webhookId": "f992f346-0076-4a79-a046-5b5c295bf6c2", "parameters": {"path": "f992f346-0076-4a79-a046-5b5c295bf6c2", "options": {}, "httpMethod": "POST"}, "typeVersion": 2}, {"id": "c000d036-7246-47a5-9001-ffc482c74371", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [-1340, -960], "parameters": {"width": 1060, "height": 620, "content": "## Grab recent drink data\n"}, "typeVersion": 1}, {"id": "fd4bdbf4-c2d0-497c-891e-2667a85fa2ad", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [-260, -960], "parameters": {"color": 2, "width": 360, "height": 500, "content": "If already drink recently. Delay the notification in 3x minutes randomly\n"}, "typeVersion": 1}, {"id": "cd4b4928-a858-4f12-b294-51ba8a4484da", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [120, -960], "parameters": {"color": 5, "width": 580, "height": 360, "content": "## Send the slack notification with AI wording. Also have the drink water action buttons"}, "typeVersion": 1}, {"id": "cc7c8459-a97d-4ee9-b97c-b4a95afecf5a", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [-1340, -320], "parameters": {"color": 3, "width": 1300, "height": 660, "content": "## When User interact the drink button. Record the drink value to sheet and send back the iOS health log water url to start the shortcut\n\n**Note for Shortcut:**\n\nThe shortcul url will be like `shortcuts://run-shortcut?name=darrell_water&input=%7B%22value%22%3A100%2C%22time%22%3A%222025-03-04T16%3A10%3A15%22%7D`\n\nIt's url encoded. The decoded version will be:\n`shortcuts://run-shortcut?name=darrell_water&input={\"value\":100,\"time\":\"2025-03-04T16:10:15\"}`\n\nWe can see it pass the shortcut name and input with json string value. This will be used in iOS shortcut"}, "typeVersion": 1}, {"id": "e8e388e0-dddc-4db2-b5fa-acb76d025580", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [-1700, -960], "parameters": {"color": 7, "width": 340, "height": 240, "content": "## Created by darrell_tw_ \n\nAn engineer now focus on AI and Automation\n\n### contact me with following:\n[X](https://x.com/darrell_tw_)\n[Threads](https://www.threads.net/@darrell_tw_)\n[Instagram](https://www.instagram.com/darrell_tw_/)\n[Website](https://www.darrelltw.com/)"}, "typeVersion": 1}, {"id": "32b098ea-a72f-4906-9a39-916afcf47dc8", "name": "Slack send drink notification", "type": "n8n-nodes-base.slack", "position": [480, -800], "webhookId": "1ffefb29-4176-4a9c-a8e2-cfc3caf05910", "parameters": {"text": "\u559d\u6c34\u63d0\u9192", "select": "channel", "blocksUi": "={\n\t\"blocks\": [\n\t\t{\n\t\t\t\"type\": \"section\",\n\t\t\t\"text\": {\n\t\t\t\t\"type\": \"mrkdwn\",\n\t\t\t\t\"text\": \"{{ $json.message.content.message ? $json.message.content.message : 'Time to drink\uff01' }}\"\n\t\t\t}\n\t\t},\n\t\t{\n\t\t\t\"type\": \"section\",\n\t\t\t\"text\": {\n\t\t\t\t\"type\": \"mrkdwn\",\n\t\t\t\t\"text\": \"{{ $('Edit Fields-Set progress').item.json.progress_image }}\"\n\t\t\t}\n\t\t},\n\t\t{\n\t\t\t\"type\": \"actions\",\n\t\t\t\"elements\": [\n\t\t\t\t{\n\t\t\t\t\t\"type\": \"button\",\n\t\t\t\t\t\"text\": {\n\t\t\t\t\t\t\"type\": \"plain_text\",\n\t\t\t\t\t\t\"emoji\": true,\n\t\t\t\t\t\t\"text\": \"100\"\n\t\t\t\t\t},\n\t\t\t\t\t\"style\": \"primary\",\n\t\t\t\t\t\"value\": \"100\"\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\t\"type\": \"button\",\n\t\t\t\t\t\"text\": {\n\t\t\t\t\t\t\"type\": \"plain_text\",\n\t\t\t\t\t\t\"emoji\": true,\n\t\t\t\t\t\t\"text\": \"150\"\n\t\t\t\t\t},\n\t\t\t\t\t\"style\": \"primary\",\n\t\t\t\t\t\"value\": \"150\"\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\t\"type\": \"button\",\n\t\t\t\t\t\"text\": {\n\t\t\t\t\t\t\"type\": \"plain_text\",\n\t\t\t\t\t\t\"emoji\": true,\n\t\t\t\t\t\t\"text\": \"200\"\n\t\t\t\t\t},\n\t\t\t\t\t\"style\": \"primary\",\n\t\t\t\t\t\"value\": \"200\"\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\t\"type\": \"button\",\n\t\t\t\t\t\"text\": {\n\t\t\t\t\t\t\"type\": \"plain_text\",\n\t\t\t\t\t\t\"emoji\": true,\n\t\t\t\t\t\t\"text\": \"250\"\n\t\t\t\t\t},\n\t\t\t\t\t\"style\": \"primary\",\n\t\t\t\t\t\"value\": \"250\"\n\t\t\t\t},\n\t\t\t\t{\n\t\t\t\t\t\"type\": \"button\",\n\t\t\t\t\t\"text\": {\n\t\t\t\t\t\t\"type\": \"plain_text\",\n\t\t\t\t\t\t\"emoji\": true,\n\t\t\t\t\t\t\"text\": \"300\"\n\t\t\t\t\t},\n\t\t\t\t\t\"style\": \"primary\",\n\t\t\t\t\t\"value\": \"300\"\n\t\t\t\t}\n\t\t\t]\n\t\t}\n\t]\n}", "channelId": {"__rl": true, "mode": "list", "value": "C08FW6YKVC1", "cachedResultName": "n8n-drink-water-nofity-demo"}, "messageType": "block", "otherOptions": {}, "authentication": "oAuth2"}, "credentials": {"slackOAuth2Api": {"id": "sD1J9ZLyEhcglrRa", "name": "Slack account"}}, "typeVersion": 2.3}, {"id": "8f550d8f-b960-41df-8a3b-2443327d5892", "name": "Send to Slack with confirm", "type": "n8n-nodes-base.slack", "position": [-560, 0], "webhookId": "fc8af764-ed01-4ca1-acef-80b8076bb9db", "parameters": {"text": "=Log Successfully", "select": "channel", "blocksUi": "={\n\t\"blocks\": [\n        {\n\t\t\t\"type\": \"divider\"\n\t\t},\n\t\t{\n\t\t\t\"type\": \"section\",\n\t\t\t\"text\": {\n\t\t\t\t\"type\": \"mrkdwn\",\n\t\t\t\t\"text\": \"Already log the water\"\n\t\t\t}\n\t\t},\n\t\t{\n\t\t\t\"type\": \"section\",\n\t\t\t\"text\": {\n\t\t\t\t\"type\": \"mrkdwn\",\n\t\t\t\t\"text\": \"Click me to Shortcut\"\n\t\t\t},\n\t\t\t\"accessory\": {\n\t\t\t\t\"type\": \"button\",\n\t\t\t\t\"text\": {\n\t\t\t\t\t\"type\": \"plain_text\",\n\t\t\t\t\t\"text\": \"iOS Health\",\n\t\t\t\t\t\"emoji\": true\n\t\t\t\t},\n\t\t\t\t\"value\": \"click\",\n\t\t\t\t\"url\": \"{{ $('slack_action_drink_data').item.json.shortcut_url}}{{ $('slack_action_drink_data').item.json.shortcut_url_data.urlEncode() }}\",\n\t\t\t\t\"action_id\": \"button-action\"\n\t\t\t}\n\t\t}\n\t]\n}", "channelId": {"__rl": true, "mode": "list", "value": "C08FW6YKVC1", "cachedResultName": "n8n-drink-water-nofity-demo"}, "messageType": "block", "otherOptions": {"thread_ts": {"replyValues": {"thread_ts": "={{ $('slack_action_drink_data').item.json.message_ts }}"}}}, "authentication": "oAuth2"}, "credentials": {"slackOAuth2Api": {"id": "sD1J9ZLyEhcglrRa", "name": "Slack account"}}, "typeVersion": 2.3}, {"id": "3383574c-7c96-4332-9876-2e47ad21f3de", "name": "Edit Fields-Set progress", "type": "n8n-nodes-base.set", "position": [-420, -800], "parameters": {"options": {}, "assignments": {"assignments": [{"id": "427f1878-99a0-446a-b4a2-2c49c919c809", "name": "progress_percent", "type": "number", "value": "={{ ($json.sum_value/$json.target) }}"}, {"id": "3fd85387-6ad3-4f4a-92ee-1db7e84f065b", "name": "progress_image", "type": "string", "value": "={{ (function() {    let p = $json.sum_value / $json.target;    let n = Math.round(p * 10);    n = Math.max(0, Math.min(10, n));    return '\ud83d\udca7'.repeat(n) + '\u2b1c'.repeat(10 - n);  })() }}"}]}}, "typeVersion": 3.4}, {"id": "67fa160d-0ea2-48c2-83b5-2f5f1b6a01b5", "name": "Google Sheets - log water value to sheet", "type": "n8n-nodes-base.googleSheets", "position": [-560, 180], "parameters": {"columns": {"value": {"date": "={{ $now.format('yyyy-MM-dd') }}", "time": "={{ $now.format('HH:mm:ss') }}", "value": "={{ $json.value }}"}, "schema": [{"id": "date", "type": "string", "display": true, "removed": false, "required": false, "displayName": "date", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "time", "type": "string", "display": true, "removed": false, "required": false, "displayName": "time", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "value", "type": "string", "display": true, "removed": false, "required": false, "displayName": "value", "defaultMatch": false, "canBeUsedToMatch": true}], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false}, "options": {}, "operation": "append", "sheetName": {"__rl": true, "mode": "list", "value": "gid=0", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI/edit#gid=0", "cachedResultName": "Sheet1"}, "documentId": {"__rl": true, "mode": "list", "value": "1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI/edit?usp=drivesdk", "cachedResultName": "n8n-drink-water"}}, "credentials": {"googleSheetsOAuth2Api": {"id": "atsKA0m2aQXeL6i6", "name": "Google Sheets account"}}, "typeVersion": 4.5}, {"id": "6d336f63-0016-46ae-b71f-2e1dfac06826", "name": "Google Sheets - Get Today Water Log", "type": "n8n-nodes-base.googleSheets", "position": [-1040, -640], "parameters": {"options": {"returnFirstMatch": false}, "filtersUI": {"values": [{"lookupValue": "={{ $now.format('yyyy-MM-dd') }}", "lookupColumn": "date"}]}, "sheetName": {"__rl": true, "mode": "list", "value": "gid=0", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI/edit#gid=0", "cachedResultName": "log"}, "documentId": {"__rl": true, "mode": "list", "value": "1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI", "cachedResultUrl": "https://docs.google.com/spreadsheets/d/1NRPq87zvNiBGKzVJaT0YYc55qp-6-9kGA4VpqkylpbI/edit?usp=drivesdk", "cachedResultName": "n8n-drink-water"}}, "credentials": {"googleSheetsOAuth2Api": {"id": "atsKA0m2aQXeL6i6", "name": "Google Sheets account"}}, "typeVersion": 4.5}], "pinData": {}, "connections": {"If": {"main": [[{"node": "Wait", "type": "main", "index": 0}], [{"node": "OpenAI", "type": "main", "index": 0}]]}, "Wait": {"main": [[{"node": "OpenAI", "type": "main", "index": 0}]]}, "Limit": {"main": [[{"node": "combine data", "type": "main", "index": 1}]]}, "OpenAI": {"main": [[{"node": "Slack send drink notification", "type": "main", "index": 0}]]}, "Summarize": {"main": [[{"node": "combine data", "type": "main", "index": 2}]]}, "combine data": {"main": [[{"node": "Edit Fields-Set progress", "type": "main", "index": 0}]]}, "Schedule Trigger": {"main": [[{"node": "Google Sheets - Get Target", "type": "main", "index": 0}, {"node": "Google Sheets - Get Today Water Log", "type": "main", "index": 0}]]}, "slack drink webhook": {"main": [[{"node": "slack_action_payload", "type": "main", "index": 0}]]}, "slack_action_payload": {"main": [[{"node": "slack_action_drink_data", "type": "main", "index": 0}]]}, "slack_action_drink_data": {"main": [[{"node": "Google Sheets - log water value to sheet", "type": "main", "index": 0}, {"node": "Send to Slack with confirm", "type": "main", "index": 0}]]}, "Edit Fields-Set progress": {"main": [[{"node": "If", "type": "main", "index": 0}]]}, "Google Sheets - Get Target": {"main": [[{"node": "combine data", "type": "main", "index": 0}]]}, "Send to Slack with confirm": {"main": [[]]}, "Google Sheets - Get Today Water Log": {"main": [[{"node": "Limit", "type": "main", "index": 0}, {"node": "Summarize", "type": "main", "index": 0}]]}}}