HELP: Real-time Google Drive Subfolder File Detection??
Context: Building automation for steel supply company - need to trigger workflows instantly when Excel files are uploaded to Drive subfolders.
Current Setup:
  • Main Drive folder with 20+ vendor subfolders
  • Files get uploaded to subfolders (not main folder)
  • Need to trigger n8n webhook immediately on file upload
  • Currently using 10-minute polling (too slow for business needs)
What I've Tried:
  1. Google Cloud Pub/Sub + Drive API: Watch registered but no notifications received
  2. Google Apps Script Drive triggers: Can't access "From Drive" triggers in UI despite enabling Drive API v3
  3. Apps Script → n8n webhook: This part works perfectly when manually triggered
The Question: What's the most reliable way to get real-time trigger when files are added to Drive subfolders?
Requirements:
  • Must work with subfolders (not just parent folder)
  • Sub-second to few-minute response time
  • Reliable (99%+ success rate)
  • Integrates with existing n8n workflow
4
6 comments
Matthew Garza
3
HELP: Real-time Google Drive Subfolder File Detection??
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