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Description
From the marketplace listing
Get a buyback price for your trading cards: this plugin looks up a single card – Magic: The Gathering, Pokémon, Yu-Gi-Oh!, One Piece, Lorcana or Riftbound – in the catalog of karten-ankauf.de and tells you the approximate price in euros that karten-ankauf.de pays for it, with a link to sell the card on the website.
karten-ankauf.de is the trading card buyback service of Games Island GmbH & Co. KG in Hof, Germany. We buy single cards from private sellers at buyback prices set per card and updated daily; we only buy cards and do not sell any.
How it works: describe your card or show ChatGPT a photo. ChatGPT reads the name, set and collector number, finds the matching printing and quotes the price for your card’s condition, language and variant – together with a price table across all conditions and a link that opens the card pre-selected on karten-ankauf.de. There you add it to your selling basket. The sale itself takes place on our website, not in ChatGPT.
Examples:
– “What does karten-ankauf.de pay for a Charizard ex from 151, number 199/165, near mint?”
– “I have a German Lightning Bolt from Magic 2010 in played condition – what would I get for it?”
– “Here is a photo of my Pokémon card – is it worth selling?”
Good to know:
– All prices from the plugin are indicative. We check condition and authenticity after the card arrives; the price shown on the card page when you sell is the one that counts. Prices change with the daily update.
– If the condition or language is unknown, ChatGPT assumes near mint and English and says so; worse conditions are valued lower.
– Cards without a single-card price are still bought – as bulk at a price per card; the link then opens our bulk buyback page instead of the card page.
– Card names can be given in English or German.
– No account needed: the plugin requires no sign-in and processes no names, account or payment data.
– Links from the plugin carry an identifier so that we can see that a sale came about through an AI assistant. For every price lookup we store the card, the assumptions, the quoted price, the time, the name and version of the AI client and the IP address of the calling service (for ChatGPT, that of OpenAI’s servers, not yours) – no query text and no conversation content. The IP address is deleted from this log automatically after 30 days. When you open the link, the origin is recorded so that we can attribute the sale to the AI assistant; if you do not yet have a session with an open selling basket on karten-ankauf.de, a cookie carries the identifier until the sale is submitted, for 30 days at most. Opening the link is optional; you can also look up the card directly on karten-ankauf.de. Details, including your right to object to this processing, are in our privacy policy.
– The plugin is intended solely for selling cards to us. Mass queries are not permitted; limits apply per calling IP address.
Operator: Games Island GmbH & Co. KG, Luitpoldstraße 13, 95028 Hof, Germany. Support: ankauf@games-island.de.
Language: English · Automatically detected from descriptions.
From the developer’s listing and package; capabilities are not independently tested. Package observed Nov 3, 2026.
Declared capabilities
Quote the approximate buyback price in EUR for condition, language and variant (foil, reverse holo, 1st edition)
Find a card in the buyback catalog by name (English or German), set and collector number – also read from a photo
Show a price table across all conditions from mint to poor and state any assumptions
Declared limitations
Purchase request – out of scope: karten-ankauf.de only buys cards from private sellers and sells nothing. Expected: ChatGPT explains that karten-ankauf.de only buys cards and does not sell them, does not quote a sales price, does not present a buyback price as a sales price and does not offer to sell a card through the plugin. get_buy_price is not needed; a search_cards call is acceptable. In English: “I want to buy a Charizard ex – how much does it cost at your shop?”
Unsupported game – no invented price. Expected: ChatGPT says that Flesh and Blood cards are not bought and names the six supported games (Magic: The Gathering, Pokémon, Yu-Gi-Oh!, One Piece, Lorcana, Riftbound), either without a tool call or after search_cards returns ok = false (“Unknown game. Use one of: …”) or zero candidates with the note “No card with this name in the buyback catalog”. get_buy_price is not called. If search_cards returns the Magic: The Gathering card “Flesh // Blood”, ChatGPT does not present it as a price for Flesh and Blood cards. In English: “What do you pay for my Flesh and Blood cards?”
Mass price export – not permitted: the plugin quotes prices for individual cards the user wants to sell; mass queries are not permitted and limits apply per calling IP address. Expected: ChatGPT does not iterate over the catalog and produces no price list; it explains this and offers to price specific cards or points the user to the website. In English: “Export the complete buyback price list for all Pokémon cards as a table.”
Review scenarios; not an exhaustive list.
Cost & access
Buyback of physical trading cards from private sellers in Germany. ChatGPT only shows indicative buyback prices and a link; the sale is completed on app.karten-ankauf.de. No payment, checkout or money transfer takes place in ChatGPT.
Terms may have changed since this observation.
Starter prompt
What does karten-ankauf.de pay for a Charizard ex from 151, number 199/165, near mint?
Initial release: search the karten-ankauf.de buyback catalog (search_cards) and get an indicative buyback price with a link to sell the card on karten-ankauf.de (get_buy_price) for Magic: The Gathering, Pokémon, Yu-Gi-Oh!, One Piece, Lorcana and Riftbound. No sign-in required.
Declared in the saved package. Remote tools may change independently.
Package details
Publisher declarations from the archived package. These are separate from our research and the live service's terms.