tash.cards
Solo build, spring 2026
tash.cards is a place to buy and sell graded trading cards. I wrote the whole thing over a semester: listings, live pricing, order matching, KYC, and payouts to sellers through Stripe Connect.
The part I like most is intake. You take a photo of a PSA slab, Gemini reads the label, we check it against PSA's own API, and the listing is filled in before you've put the card down.
- Around 710 trades and $22k in volume in the first few months
- Live price feeds and order book over Supabase Realtime
- Stripe Connect for KYC and seller payouts
- Slab-reading intake with Gemini Vision and PSA's API
Next.js · Supabase · Stripe Connect · Gemini · PSA API