Try the Alt sold listings API

- There is no `sort` param — only Alt's own default relevance/recency ordering has been verified against this index. - Sales on Alt itself (`auction_house` `Alt`) and sales aggregated from another auction house carry different link fields: - An Alt sale has `listing_id`, `listing_type` and `payment_state`. Pass `listing_id` as `id`, together with `listing_type`, to `alt-listing` to get that exact item's `cert_number`, grade and images. `id` is the sale's own transaction id and is not accepted by `alt-listing`. `url` is the item's page on alt.xyz. - An aggregated sale has no `listing_id` or `payment_state`. Its `url` is the click-through link back to the original sold listing on its source site (e.g. an eBay item URL). - `listing_type` is one of `AUCTION`, `FIXED_PRICE` (Alt's own sales) or `EXTERNAL_AUCTION`, `EXTERNAL_FIXED_PRICE` (aggregated sales). - `payment_state` is Alt's own payment status for the sale, passed through as Alt reports it. `COMPLETED` and `NOT_STARTED` have been observed; a sale can be listed before the buyer has paid. - `price` for a sale on Alt itself is in US dollars, and what it includes depends on `auction_type`: - `AUCTION` — the winning bid plus Alt's 20% buyer's premium (winning bid × 1.20). - `BEST_OFFER` — the accepted offer, normally below the listing's `list_price`. No buyer's premium. - `BUY_IT_NOW` — the listing's `list_price`. No buyer's premium. - There is no language field. Alt records a card's language as part of the set name in `brand` (for example `Pokemon Base Set` and `Pokemon Base Set Japanese`), and each language printing has its own `asset_id`. A `brand` with no language word is not by itself proof of an English printing; for a PSA-graded Alt sale, confirm against `psa-cert-lookup` using the `cert_number` from `alt-listing`. - `auction_type` is a source-specific sub-classification (e.g. eBay's `BEST_OFFER`/`BUY_IT_NOW`/`AUCTION`), informational only — it is not a validated filter enum. Example result for a sale on Alt itself: ```json { "id": "dabe486a-69ca-4b7a-be75-488500f90dce", "asset_id": "6b26a0cf-17d4-4c6c-882d-b2687f1faca8", "listing_id": "0f471db5-06e0-482d-b7fc-f3c96fec41d2", "listing_type": "FIXED_PRICE", "payment_state": "COMPLETED", "name": "2007 Pokemon Ex Power Keepers Reverse Foil Charizard #6", "brand": "Pokemon Ex Power Keepers", "auction_house": "Alt", "auction_type": "BUY_IT_NOW", "grading_company": "PSA", "grade": "7", "price": 850, "sold_date": "2026-10-08", "url": "https://alt.xyz/itm/0f471db5-06e0-482d-b7fc-f3c96fec41d2" } ```