Quick Overview
Quick Overview This workflow runs every 30 minutes to check a list of website URLs, detect downtime or page content changes using HTTP requests and stored workflow state, and post alerts to a Slack channel only when something goes down, changes, or recovers. How it works Runs every 30 minutes on a schedule. Builds a list of target URLs (with labels) to monitor. Fetches each page with an HTTP GET request while capturing the full response and continuing even on 4xx/5xx errors. Compares each page’s current status code and content signature against the last saved value in n8n workflow static data and updates the stored baseline. Posts a message to Slack only when a page is down, its content has changed, or it has recovered. Setup Add a Slack credential/connection and set the destination channel (for example, #alerts). Update the URL list (label and url fields) in the “Define URLs to Monitor” code step. Optionally adjust the schedule interval and HTTP timeout to match your monitoring needs. An n8n automation workflow template by Julian Abt.
Julian Abt
web
free
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