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/kanabell/v1/buyback_search2 credits

Ka-nabell's buy-back list (買取) for one game: what the shop PAYS for each card (top condition, with the % it pays for lower ones) and how many it still wants; filter by name, card number, set, rarity, buy-price range, the 買取強化 list and recent buy-price rises.

Working example
Parameters

Which game: pokemon, yugioh or duel_masters — the three Ka-nabell sells and buys (also accepted: ポケカ, 遊戯王, デュエマ, ygo, dm).

Card name or keyword as the shop writes it — Japanese name or kana (ピカチュウ, ぴかちゅう), several words narrow it (リザードン SAR); a card number (QCCU-JP170, 180/171) also matches. The same matching the site's own search box uses.

One set / expansion (the shop's pack id; the `sets` action lists them with names and codes, e.g. yugioh 876 = イモータル・フェニックス, pokemon 900 = 30th セレブレーション). (1–99999999)

One series / block (the `sets` action lists series; yugioh 1 = 第13期). (1–99999999)

One rarity: for pokemon the code (C, U, R, RR, RRR, SR, SAR, AR, UR, HR …); for yugioh and duel_masters the numeric id. The `rarities` action lists every value with its name.

Exact card number as printed: yugioh 'QCCU-JP170', pokemon '180/171' or '001/SV-P', duel_masters 'P36/Y21' (case-insensitive).

Only cards the shop still wants (買取可能枚数 above 0).

Only the shop's 買取強化 list (cards it is pushing to buy).

Lowest buy-back price in JPY (top condition), as the buy site's 買取価格 filter; implies buying_only (a price is published only while the shop buys the card). (0–99999999)

Highest buy-back price in JPY (top condition). (0–99999999)

Only cards whose last buy-price change in the last 30 days went up (the buy site's 買取価格アップ list) or down.

Only graded slabs (PSA / BGS / CGC products such as '(PSA10)N'). Each row's graded, grader and grade say which.

Pokémon only: card kind, as the site's 種類 filter; comma-separate several (item,supporter).

Pokémon only: format the card is legal in, as the site writes it (スタンダード, エクストラ, 殿堂).

Order of the rows.

Page number; meta.last_page says how many there are (the shop serves the first 10,000 results of a search). (1–10000)

Rows per page (1-100, default 30). (1–100)

Ask Reef AI
request preview
curl -X POST https://api.reefapi.com/kanabell/v1/buyback_search \
  -H "x-api-key: $REEF_KEY" \
  -H "content-type: application/json" \
  -d '{"game":"yugioh","sort":"buyback_desc"}'

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