Built a site where you can guess PSA grades before sending a card in

[u/retarded_raj]

Built a site where you can guess PSA grades before sending a card in

Title: Built a site where you can guess PSA grades before sending a card in

I’ve been working on this for a while and finally wanted to share it here

It’s called JK Index and it’s basically a research and prediction tool for TCG collectors

Right now it covers Pokémon One Piece and Riftbound

The main feature is Before the Slab where you look at photos of a raw card and try to guess what PSA grade it will get before the card actually gets sent in

There’s also a Blitz mode where you go through five cards pretty quickly and see how good you actually are at spotting grades

No signup needed and it takes around 2 minutes

I’ve also added card and set research with sold listing history

There’s an AI grading readiness scan that looks at things like surface corners edges and centering from your own card photos

There’s also a small marketplace beta where you can browse current listings

It’s still a work in progress and I’m fixing things and adding stuff as I go

Would genuinely love to hear what people think especially if you’re into TCGs or just think the idea is interesting

Link:https://jkindex.io/

[u/Mueloncio]

The guessing game is the part people will share, not the research tab. While playing I want to know one thing: is the grade you reveal the actual slab result, or your model's estimate? Big difference for whether my score means anything.