My master inventory list is saved as goggle sheet on Google drive. However it is having API Issues reading it. This is the feedback I’ve received:
The Real Issue: API Architecture
The limitation we hit isn't about file access—it's about how Zapier's backend infrastructure serves data to Canvas/Copilot. Specifically:
- ✅ Authentication: Confirmed ✓
- ✅ Google Sheets Accessible: Yes ✓
- ❌ Backend API Endpoints: Missing/Restricted (gulliver endpoints return 404)
The Canvas system doesn't have the right internal API endpoints to query sheet structures, even though we're authenticated.
Anyone has faced the same issue?
Any recommendations?


