Connect to your Supabase project. Use the Project URL and the publishable (anon) key, never the secret / service_role key.
Sign in with the account you created in Supabase.
Feed cards through one at a time. Each is recognised, priced and checked against the screener, with its centering measured. Valuable ones are flagged.
Scans the front of each copy and shows the highest PSA grade its centering allows (55/45 for a 10, 60/40 for a 9, 65/35 for an 8 …). Check backs later from the stack view.