Ask anything about any card
The first AI that knows your collection and the market
Can ChatGPT tell me what my cards are worth? Yes.
CardChain AI is a native ChatGPT app and a standard Claude connector, so the assistant you already use can search any sports card and come back with what it is really selling for — the exact player, year, set, parallel and grade, priced against live market data, with the 30-day trend. Without a connector, an AI answering a card question is recalling a price from training data. In a market that reprices weekly, that is a memory of a price, not a price.
That is what turns a price into a decision. It can tell you whether the asking price in front of you is below the market for that exact parallel and grade rather than for the card in general, which is where most overpaying happens — and whether a card is worth sending in, by subtracting the submission cost and reading the real PSA, BGS and SGC population at each grade. Send a photo and it identifies the card first. No browser extension, no key to copy between sites, and setup finishes on the same phone you photograph cards with, in about two minutes. Covers 2.2M+ sports cards across baseball, basketball, football and hockey, priced against 40M+ tracked sales.
Yes, it's free. Free to start, with no credit card — card search, real-time pricing, population and the grading math all included. Set it up in ChatGPT or in Claude, see how the grading math works, or read how it compares to other connectors.
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Questions
Can ChatGPT tell me what a trading card is worth?
Yes, once CardChain AI is added. On its own ChatGPT answers card questions from training data — a remembered price, not a current one. With CardChain connected it looks the card up live: the exact player, year, set, parallel and grade, what it is selling for now, and how that has moved over the last 30 days.
Can I search for cards and research them in ChatGPT?
That is the main thing it does. Ask for any sports card by player, year, set, card number or parallel and get real-time pricing back, then keep asking — how it has trended, what the PSA, BGS and SGC population looks like at each grade, how the player is performing. It is a research session in the chat you are already in, instead of six tabs.
Can it help me find deals?
Yes. Because it knows what a card is actually selling for, it can tell you when an asking price is below the market for that exact parallel and grade rather than for the card in general — which is where most overpaying happens. Ask it to check a card you are looking at and it will price the specific version in front of you.
Is CardChain AI free?
Yes. It is free to start, with no credit card. Search any card, see real-time pricing and population, and run the grading math without paying anything. Pro is for power users.
Can it tell me whether a card is worth grading?
Yes, and it does the arithmetic rather than guessing. should_i_grade reads the raw value and the graded value at the grade you expect, subtracts the full submission cost, and puts the result next to the real population at each grade — so the odds come from how copies have actually graded, not from how clean the card looks in your hand.
Do I need a browser extension?
No. CardChain AI is a native ChatGPT app and a standard Claude connector. Nothing to install in a browser, no desktop-only step, and setup finishes on a phone in about two minutes.
Which cards does it cover?
Sports cards — baseball, basketball, football and hockey — including parallels and every grade level, priced against 40M+ tracked sales. Pokémon, Magic, Yu-Gi-Oh! and One Piece are not covered.