Monitor SSL/TLS certificate expiry via an HTTP certificate inventory API
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This workflow has 12 nodes and runs on a schedule (cron 0 6 * * *) (plus 1 other trigger). It uses only n8n's built-in nodes.
How it runs
Trigger: On a schedule (cron 0 6 * * *) (plus 1 other trigger).
- Set Configuration Parameters (Edit Fields (Set)): sets 5 fields: certInventoryApiUrl, watchDaysThreshold, warningDaysThreshold…
- Fetch Certificate Inventory (HTTP Request): calls an HTTP API
- Wait: pauses before continuing
- Split Certificates Into Items (Split Out): splits a list into separate items
- Calculate Days Until Expiry & Urgency Tier (Edit Fields (Set)): sets 2 fields: daysUntilExpiry, urgencyTier
- Route by Urgency Tier (Switch): routes items into 4 branches
- No Action - Certificate Healthy (Edit Fields (Set)): sets 1 field: note
- Prepare Standard Renewal Reminder (Edit Fields (Set)): sets 2 fields: dispatchChannel, readyForDispatch
- Wait: pauses before continuing
- Prepare Critical Renewal Task & Alert (Edit Fields (Set)): sets 2 fields: dispatchChannel, readyForDispatch
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (7)
- Schedule Trigger
n8n-nodes-base.scheduleTrigger - Manual Trigger
n8n-nodes-base.manualTrigger - Edit Fields (Set)
n8n-nodes-base.set - HTTP Request
n8n-nodes-base.httpRequest - Wait
n8n-nodes-base.wait - Split Out
n8n-nodes-base.splitOut - Switch
n8n-nodes-base.switch
From the author
Quick Overview This workflow runs daily (or manually) to fetch an SSL/TLS certificate inventory over HTTP, calculates days until expiry, classifies each certificate by urgency, and prepares standard renewal reminders or critical renewal alerts after a short…