Reef AI: ask for any data. Try it
The playground

Try any of 3860 endpoints — live.

Pick an endpoint, load a working example, tweak the params, and send — no signup to try. Results render the way the data deserves; raw JSON, headers & code are one tab away.

Playground demo key · api.reefapi.com
post/cardtrader/v1/product/offers3 credits

Every public offer on one card or product, cheapest first, as CardTrader shows them to a shopper in the ship-to country: price (with the seller price and CardTrader's buyer fee), quantity, condition, card language, foil / reverse holo, first edition, signed, altered, graded, the seller's name, type, country, rating and feedback count, the shipping 'from' price, whether the seller ships direct or only through CardTrader Zero, and CardTrader Zero hub stock. Filter by card language, minimum condition, foil, first edition, signed, altered, graded, seller country, seller type, CardTrader Zero or direct shipping and price; every filtered field is returned per offer so the filtering can be checked. Reads up to 1 000 offer rows.

Working example
Parameters

CardTrader product id (product_id of any search row) or a cardtrader.com card URL.

Only offers of cards printed in these languages (one or more codes, e.g. en or en,jp). Names such as Japanese are accepted.

Only offers in this condition or better (Mint > Near Mint > Slightly Played > Moderately Played > Played > Poor). Codes NM, SP, MP, PL, PO are accepted.

true = only foil offers, false = only non-foil (games with a foil property; for Pokémon use reverse_holo).

Pokémon: true = only reverse-holo offers, false = only non-reverse.

true/false: first-edition copies (Pokémon, Yu-Gi-Oh!).

true/false: signed copies.

true/false: altered copies.

true/false: graded (slabbed) copies.

Only offers shipped from these countries (ISO codes).

Only offers from this seller type.

Only offers buyable with CardTrader Zero (shipped together via CardTrader's hub).

Only offers the seller ships directly to the ship-to country.

Lowest offer price. (0–)

Highest offer price. (0–)

How many offers to return (cheapest first). (1–1000)

CardTrader site language: card names follow it in translated_name (Charizard → Glurak in de); a query also matches names in this language.

Price currency. USD prices are CardTrader's own USD prices (with its own buyer fee), not a conversion of the euro price.

Ship-to country of the shopper. CardTrader shows only the offers whose sellers ship to this country (directly or through CardTrader Zero), and the shipping 'from' price to it, so offers and lowest prices differ by country.

How many fresh exits to try before giving up. (1–5)

Ask Reef AI
request preview
curl -X POST https://api.reefapi.com/cardtrader/v1/product/offers \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"product_id":"374423"}'

Press Send request to see the live result here.

Not sure what to send? Ask Reef AI

What you can run here, without an account

ReefAPI is one HTTP gateway to 632 live web-data APIs covering 3860 endpoints across 13 categories. Every endpoint answers with the same JSON envelope, so one integration reaches all of them. Each response reports what it cost and when the source was read.

No signup, no API key and no card are required to try an endpoint on this page. Anonymous calls run on a shared demo key, capped at 15 calls per hour per visitor. Pick an API, fill the parameters and the real response comes back from the live source, not from a canned sample. A free account lifts the cap and gives you 1,000 credits and your own key.

Browse every API in the catalog, read an endpoint's fields and example response in the docs, or see per-call credit costs on the pricing page.

Coverage by category

ecommerce350
classifieds116
real-estate29
media25
utilities18
jobs18
developer-tools18
reviews15
social15
search-seo11
travel8
other5
finance4