Zoho Bookings – Test API (Server-based)
Use the Server-based OAuth flow: connect first to get a refresh token, add it to .env.local, then book. from_time format: dd-MMM-yyyy HH:mm:ss
Step 1: Connect with Zoho Bookings
Create a Server-based Application in Zoho Developer Console. Add redirect URI: http://localhost:3000/api/zoho-bookings/callback
Verify API IDs
If you get "Service not found", your datacenter or IDs may differ. Use the correct workspace_id and check your region (US/EU/IN).