tcgplayer-api
TCGplayer API - Card Market Prices, Price History, Listings, Sellers
Search TCGplayer (tcgplayer.com, the US marketplace, prices in USD) for single cards and sealed products across every game it carries (Pokemon, Magic: The Gathering, Yu-Gi-Oh!, One Piece, Lorcana and the rest of its 71 product lines), up to 50 per page, sorted by relevance, best match, best selling, name or market price, filtered by game, set, rarity and cards vs sealed: product id, name, URL, image, game, set, card number, rarity, market price, median price, lowest listing price, listing count and up to 3 featured listings, plus the filter facets with counts. Read one product by id or URL with its images (200, 400 and 1000 px), card text, the game's card attributes (Pokemon HP, stage, attacks, weakness; Magic mana value, type line, power and toughness; Yu-Gi-Oh! ATK and DEF...), listing and seller counts, and every SKU - one per condition x printing x language, such as Near Mint / Normal / English - with its market price and the low, high and count of the recent sales behind that market price. Page every live seller listing for a product, cheapest first, filtered by condition, printing, language, verified sellers or TCGplayer Direct, with the seller's rating, sales band, gold star and location. Pull up to a year of price history per SKU (market price, quantity sold, transaction count and the sale range per day, 3-day or week), the 5 most recent sales, a whole set's price guide (up to 500 rows per page, cards or sealed), every set of a game newest first, the list of games, search autocomplete, trending searches, and a seller's profile with 365 days of feedback summarized, their individual feedback rows and their catalogue with their own listings. All endpoints return structured JSON.
TCGplayer's own developer API is closed to new developers: its docs say "We are no longer granting new API access at this time." This skill reads the public marketplace data instead, with one Scavio key.
See also: for sold comps of graded cards and other collectibles on eBay use the ebay-product-data skill; for the cross-retailer price of sealed product at big-box stores use google-shopping-api.