C#: Create signed upload URL

Creates a signed URL that can be used to upload a file without requiring a logged-in user. This is useful for handing off uploads to an untrusted client.

• Policy permissions required:
  • buckets permissions: none
  • objects permissions: insert
• Pair this with UploadToSignedUrl() to perform the upload.

Examples

Create Signed Upload URL

var signedUrl = await supabase.Storage.From("avatars").CreateUploadSignedUrl("fancy-avatar.png");