{"product_id":"website-uptime-monitor-n8n-google-sheets-slack-alerts","title":"Website Uptime Monitor (n8n): Google Sheets + Slack Alerts","description":"\u003ch3\u003eKeep your websites online—automatically monitor uptime and alert your team\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow checks your monitored websites every 10 minutes, classifies each result as \u003cstrong\u003eUP\u003c\/strong\u003e, \u003cstrong\u003eSLOW\u003c\/strong\u003e, or \u003cstrong\u003eDOWN\u003c\/strong\u003e, and sends real-time incident and recovery notifications to \u003cstrong\u003eSlack\u003c\/strong\u003e (with optional \u003cstrong\u003eGmail\u003c\/strong\u003e email alerts). It also logs downtime history to \u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e and posts a daily Slack digest.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRuns every 10 minutes\u003c\/strong\u003e and reads the site list from the Google Sheets \u003cem\u003e“Sites”\u003c\/em\u003e tab.\u003c\/li\u003e\n  \u003cli\u003eFilters out inactive\/blank rows, then \u003cstrong\u003enormalizes and deduplicates URLs\u003c\/strong\u003e before testing.\u003c\/li\u003e\n  \u003cli\u003eFor each site, performs an \u003cstrong\u003eHTTP request\u003c\/strong\u003e, measures response time, and evaluates results against configured expectations (expected HTTP status, optional page keyword, and maximum response time).\u003c\/li\u003e\n  \u003cli\u003eDetermines the check outcome (\u003cstrong\u003eUP\u003c\/strong\u003e, \u003cstrong\u003eSLOW\u003c\/strong\u003e, or \u003cstrong\u003eDOWN\u003c\/strong\u003e) and records the reason.\u003c\/li\u003e\n  \u003cli\u003eConsults the previous state in Google Sheets \u003cem\u003e“Site State”\u003c\/em\u003e, and only \u003cstrong\u003eopens an incident after a configured number of consecutive failures\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eSends \u003cstrong\u003eSlack alerts\u003c\/strong\u003e for incident open, recovery, and scheduled \u003cstrong\u003e6-hour reminders\u003c\/strong\u003e while the incident remains active.\u003c\/li\u003e\n  \u003cli\u003eOn recovery, appends a closed-incident entry to \u003cem\u003e“Incident History”\u003c\/em\u003e with incident start, recovery time, duration, and last reason.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUpdates “Site State” on every run\u003c\/strong\u003e with latest status, counters, timestamps, and last check details.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRuns daily at 09:00\u003c\/strong\u003e to generate a summary from the last 24 hours of incident history and posts a \u003cstrong\u003edaily Slack digest\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eIf the workflow errors, triggers a \u003cstrong\u003ecrash alert to Slack\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSaaS operators who need automated \u003cstrong\u003ewebsite uptime monitoring\u003c\/strong\u003e with concise Slack notifications.\u003c\/li\u003e\n  \u003cli\u003eAutomation engineers maintaining multiple public endpoints and tracking \u003cstrong\u003edowntime history\u003c\/strong\u003e in Google Sheets.\u003c\/li\u003e\n  \u003cli\u003eTeams that want both \u003cstrong\u003eincident reminders\u003c\/strong\u003e and a \u003cstrong\u003edaily operational digest\u003c\/strong\u003e without manual reporting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e: reads \u003cem\u003eSites\u003c\/em\u003e, writes \u003cem\u003eSite State\u003c\/em\u003e, appends to \u003cem\u003eIncident History\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHTTP Request\u003c\/strong\u003e: checks each URL and measures response time\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlack\u003c\/strong\u003e: incident open, recovery, 6-hour reminders, daily digest, and crash alerts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptional Gmail\u003c\/strong\u003e: email alerts alongside Slack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003en8n nodes used\u003c\/strong\u003e: \u003cem\u003eif\u003c\/em\u003e, \u003cem\u003ecode\u003c\/em\u003e, \u003cem\u003egmail\u003c\/em\u003e, \u003cem\u003eslack\u003c\/em\u003e, \u003cem\u003esticky note\u003c\/em\u003e, \u003cem\u003ehttp request\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":46094087618739,"sku":"N8N-19956","price":60.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/Vv2INTkD_1XJbFXuMMscb_ldLvnmRZ.png?v=1790413366","url":"https:\/\/buyflowscripts.com\/products\/website-uptime-monitor-n8n-google-sheets-slack-alerts","provider":"N8N Commerce","version":"1.0","type":"link"}