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SSL/TLS Certificate Expiry Monitor with Slack Alert

by Marth - Business Automationadapted from n8n official workflow galleryUpdated Aug 2026
RequiresCCodeHTTP RequestHTTP RequestSlack
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ScSchedule TriggerCoList Domains to MonitorList Domains to…HRCheck Certificate ExpiryCheck Certifica…IfIs Certificate Expiring?Is Certificate …YOUR_SECURITY_ALERT_CHANNEL_IDYOUR_SECURITY_A…1234
1/5
STEPS · 4
Runs on a schedule

How It Works: The 5-Node Certificate Management Flow 🗓️ This workflow efficiently monitors your domains for certificate expiry. Scheduled Check (Cron Node): This is the workflow's trigger. It's configured to run on a regular schedule, such as every Monday morning, ensuring certificate checks are automated and consistent. List Domains to Monitor (Code Node): This node acts as a static database, storing a list of all the domains you need to track. Check Certificate Expiry (HTTP Request Node): For each domain in your list, this node makes a request to a certificate checking API. The API returns details about the certificate, including its expiry date. Is Certificate Expiring? (If Node): This is the core logic. It compares the expiry date from the API response with the current date. If the certificate is set to expire within a critical timeframe (e.g., less than 30 days), the workflow proceeds to the next step. Send Alert (Slack Node): If the If node determines a certificate is expiring, this node sends a high-priority alert to your team's Slack channel. The message includes the domain name and the exact expiry date, providing all the necessary information for a quick response.

Tags

n8nreference-onlyslack
Connects
CCodeWHTTP RequestSlack
CategorySlack
Triggermanual
Complexitymedium
Nodes5
AddedAug 4, 2025

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