Supabase storage tutorial: Upload, fetch, sign & list files

Learn Supabase Storage Fundamentals with n8n

This template demonstrates how to integrate Supabase Storage with n8n for uploading, fetching, generating temporary signed URLs, and listing files. It’s a beginner-friendly workflow that helps you understand how to connect Supabase’s storage API with n8n automation.

---

Who it’s for - Developers and teams new to Supabase who want a hands-on learning workflow. - Anyone looking to automate file uploads and retrieval from Supabase Storage. - Educators or technical teams teaching Supabase fundamentals with practical demos.

---

How it works 1. Upload File – A user uploads a file through an n8n form, which gets stored in a Supabase storage bucket. 2. Fetch File – Retrieve files by providing their filename. 3. Temporary Access – Generate signed URLs with custom expiry for secure file sharing. 4. List Objects – View all stored files in the chosen Supabase bucket.

---

How to set up - Create a Supabase account and set up a project. - Create a bucket in Supabase (e.g., test-n8n). - Get your Project URL and Anon Key from Supabase. - In n8n, create a Supabase API Credential using your keys. - Import this workflow and connect it with your credentials. - Run the forms to test file upload, retrieval, and listing.