What BIGWEB sells every card for in each condition, and what it pays to buy it back
The BIGWEB API returns bigweb.co.jp, the online shop of the Japanese card retailer BIG MAGIC, as clean JSON in yen across the 29 games it stocks, from Magic: The Gathering (279,034 products on 2026-11-08) and Weiß Schwarz (70,069) to Yu-Gi-Oh! (50,787), Duel Masters (35,995), Pokémon (35,512) and One Piece (5,289).
This page covers what the BIGWEB API returns, who uses it, a real response and pricing. Every parameter and response field is in BIGWEB API parameters and responses →
- endpoints
- 8
- credits per call
- 1–3
3 credits per call≈ $3/1,000 calls1,000 free credits, no card
- ポケモンカードゲーム スカーレット＆バイオレット スタートデッキGenerations ピカチュウex・カビゴンex700 JPY
- game
- pokemon
- game_name
- ポケモンカードゲーム
- ポケモンカードゲーム スカーレット＆バイオレット スターターセットex ピカチュウスペシャルセット3580 JPY
- game
- pokemon
- game_name
- ポケモンカードゲーム
- ポケモンカードゲーム スカーレット＆バイオレット スターターセットex ピカチュウex＆パーモット1800 JPY
- game
- pokemon
- game_name
- ポケモンカードゲーム
8 active endpoints, on 1, 2 and 3 credit tiers.
- POST/bigweb/v1/search3 credits
- POST/bigweb/v1/buyback_search3 credits
- POST/bigweb/v1/card2 credits
- POST/bigweb/v1/sets1 credit
- POST/bigweb/v1/filters1 credit
- POST/bigweb/v1/features2 credits
- POST/bigweb/v1/suggest1 credit
- POST/bigweb/v1/games1 credit
Run the call yourself, on the real endpoint
Change a parameter and press Try it. The response on the right is what your code will receive.
BIGWEB API
3 of 8 endpoints, ready to run
One row per card and condition: yen price, stock, points, set, rarity and printed number.
// Press "Try it" and this pane shows exactly what the // live site returned this second — including an empty // result, if that is the truth. No key, no account.
What BIGWEB endpoints does ReefAPI ship?
8 live read endpoints. Read-only data API: no writes, no account actions, no dashboard access on the target site.
Every parameter, every allowed value →
Missing a BIGWEB endpoint, or need a source we don't have yet?Contact us real people · same-day reply.How the BIGWEB API works
BIGWEB is a normal ReefAPI surface — the same four rules that hold for every other engine on the key.
No OAuth app, no request signing, no per-site account. One key covers all 632 engines.
Every route is a POST with a JSON body. Parameters are validated against the published schema before anything is charged.
Credits, not seats. Failed and blocked calls are never charged, and nothing is cached: every call reads the source live.
One envelope everywhere. meta carries latency_ms, record_count and the endpoint that answered.
From a card name to the shop's spread in three calls
Find the card, see every condition, compare what the shop charges with what it pays.
{"game": "mtg", "keyword": "Lightning Bolt", "in_stock": true}Every printing and condition in stock, with yen price and stock.
{"product_id": "3154729"}That product's sale and buy-back prices, plus the same card in other conditions: 2,500 yen to buy and 1,500 yen paid on 2026-11-08.
{"game": "mtg", "keyword": "Lightning Bolt", "sort": "price_desc"}The printings the shop pays most for; 180,000 yen for the top one on 2026-11-08.
For any card: what it costs in each condition, what the shop pays for it, and how many copies the shop will take, live from the shop.
curl -X POST https://api.reefapi.com/bigweb/v1/search \
-H "x-api-key: $REEF_KEY" \
-H "content-type: application/json" \
-d '{"game":"pokemon","keyword":"ピカチュウ"}'{
"ok": true,
"data": { … },
"meta": {
"api": "bigweb",
"endpoint": "search",
"mode": "live",
"latency_ms": …,
"record_count": …
},
"error": null
}One Lightning Bolt, four products: what BIGWEB sells each for and what it pays
BIGWEB lists each condition and finish as its own product. Measured on Lightning Bolt 105 (Japanese, Strixhaven Mystical Archive), 2026-11-08:
| what the shop lists | field | value |
|---|---|---|
| ニアミント: 2,500円, 在庫2 | price_jpy / stock | 2500 / 2 |
| プレイド: 2,000円, 在庫1 | condition_code / price_jpy | PLD / 2000 |
| FOILニアミント: 15,000円, 在庫1 | is_foil / price_jpy | true / 15000 |
| ニアミントを買い取ります: 1,500円, 上限8枚 | buyback_price_jpy / buy_limit | 1500 / 8 |
| FOILニアミント買取: 7,000円, 上限4枚 | other_conditions[].buyback_price_jpy | 7000 |
| 売り切れの特殊FOIL: 2,000円, 買取 1,000円 | in_stock / buyback_price_jpy | false / 1000 |
A sold-out product usually shows no price at BIGWEB, and price_jpy is then null rather than an old number; some games and sealed products keep the price visible, and it is returned as printed, with in_stock false. Buy-back prices are the web prices; BIG MAGIC's walk-in stores can pay differently, and the shop states that cards bought at 50 yen or less may pay 0 if not near mint.
What BIGWEB publishes, and what it does not
bigweb.co.jp only, in JPY, 29 games. Measured 2026-11-08: 59 of 59 live cases across eight actions. 189 products from three games were re-read on the shop's own pages, and every printed price, sold-out flag, stock or buy limit and name matched.
Price per card and condition, reduced-price flag with the old price, stock, points, printed number where the shop has one, set, rarity, and language on Magic and Lorcana.
Buy price and limit. Games without a web buy-back list answer NOT_FOUND.
Sales or price history, prices at the walk-in BIG MAGIC stores, and set release dates, which are empty at the source.
What people build with BIGWEB
The jobs this data is most often used for.
endpoints
credits per call
Japan-to-abroad arbitrage: BIGWEB's yen price per condition next to TCGplayer, Cardmarket or eBay for the same card number
Buy-back spread: what the shop sells a card for against what it pays, with card, on one product
MTG price tracking for Japanese-language and foil printings across 279,000 products
Restock watches on sold-out cards
What BIGWEB data costs
The cheapest call here is 1 credit, so $15/mo (Pro) buys 10,000 of them — $1.50 per 1,000 credits. Credits roll over and never expire, and failed or blocked calls are not charged.
- 1,000 free credits on signup, no card
- One key, all 632 APIs, one credit pool
- Failed and blocked calls are never charged
- Credits roll over and never expire
Call it in two lines
Sign up, get 1,000 credits and one key that works on every engine. Then this is the whole protocol.
curl -X POST https://api.reefapi.com/bigweb/v1/search \
-H "x-api-key: $REEF_KEY" \
-H "content-type: application/json" \
-d '{"game":"pokemon","keyword":"ピカチュウ"}'import os
import requests
REEF_KEY = os.environ["REEF_KEY"]
r = requests.post(
"https://api.reefapi.com/bigweb/v1/search",
headers={"x-api-key": REEF_KEY},
json={
"game": "pokemon",
"keyword": "ピカチュウ"
},
timeout=90,
)
print(r.json()["data"])Have a question? We got answers.
The questions people actually ask before wiring up BIGWEB.
Which games does BIGWEB cover?▾
29 games with products on 2026-11-08, including Magic: The Gathering, Weiß Schwarz, Yu-Gi-Oh!, Duel Masters, Pokémon, Cardfight!! Vanguard, Z/X, WIXOSS, Battle Spirits, Union Arena, One Piece, Digimon, Lorcana and hololive, plus card supplies. games returns the list and which filters each one has.
Why does the same card appear on several rows?▾
Because BIGWEB sells each condition and finish as its own product with its own price and stock: near mint, played, foil and so on. Group rows by card_number and set, or call card on any one of them to get the others in other_conditions.
Does it give the buy-back (買取) price?▾
Yes. buyback_search lists what the shop pays and buy_limit, the most copies it takes, and card returns the sale and buy-back sides together. On 2026-11-08 BIGWEB paid 1,200,000 yen for the Pokémon promo ピカチュウ 288/SM-P, which was itself sold out. Not every game has a web buy-back list; those return NOT_FOUND at no charge.
Are the conditions the same for every game?▾
No, and the API keeps them straight. MTG uses ニアミント, プレイド, ヘビー and foil versions (condition_code NM, PLD, HP, is_foil true); Pokémon uses プレイ用, 特価[傷含む], コレクター向け; One Piece and several others are sold in one condition and condition is null. A game's other filters arrive named by what they are, for example attributes.card_type LEADER on One Piece. The filters action lists the options for each game.
Can I search by card number?▾
Yes. keyword matches names and printed numbers, for example 288/SM-P, QCCU-JP170 or OP10-033, and every row carries card_number where the shop publishes one. Some rows have none, such as many MTG promos.
Can I get only what is in stock?▾
Yes. in_stock drops sold-out products from each page, and meta.removed_sold_out_rows says how many were removed, so a page can return fewer than 100 rows. Each page keeps its place in the shop's full list, so read on with page until has_more is false.
What is the BIGWEB API?▾
BIGWEB API is a ReefAPI endpoint group for bigweb (big magic) as json: japanese prices for 29 card games in yen, per card and condition, with stock and the shop's buy-back prices. It returns live JSON through POST requests under /bigweb/v1.
Is the BIGWEB API free to try?▾
Yes. ReefAPI starts with 1,000 free credits, no card required. BIGWEB calls use the same shared credit balance as every other ReefAPI engine.
Do I need a BIGWEB login or account?▾
No login to BIGWEB is needed for the API response. You call ReefAPI with your x-api-key header, and the playground can run live examples before you create a production key.
How fresh is the BIGWEB data?▾
The page example is captured from a live search call, and production requests fetch live data through ReefAPI rather than a static sample.
How many credits does the BIGWEB API use?▾
BIGWEB actions currently cost 1-3 credits per successful call. Failed or blocked calls are free. All APIs draw from one credit pool.
Can I call BIGWEB from an AI assistant or MCP client?▾
Yes. Connect ReefAPI once through MCP and your assistant can call bigweb actions with the same key, credit pool and JSON envelope used by normal REST requests.
Is the BIGWEB API a BIGWEB scraper?▾
It is the managed alternative to a DIY BIGWEB scraper. Instead of building and maintaining your own scraper — proxies, headless browsers, captcha and constant breakage — you call one ReefAPI endpoint and get the same bigweb (big magic) as json: japanese prices for 29 card games in yen, per card and condition, with stock and the shop's buy-back prices back as clean JSON.
Why does my BIGWEB scraper keep getting blocked?▾
Most BIGWEB scrapers break on anti-bot defenses, rate limits and IP bans that need rotating residential proxies and browser fingerprinting to clear. ReefAPI handles all of that for you — no proxies, no captchas, no maintenance — and returns live JSON. Blocked calls are free.
350 E-commerce & Marketplaces APIs on the same key
One key, one credit pool, one response envelope. If you are pulling BIGWEB, you are one call away from the rest of the category — no second contract, no second integration.
Need something this API does not do?
Name the endpoint, the field, or a source we do not carry yet. We ship new APIs every week and you would be first to get the key. Real people read every message and reply the same day.
Try it on your own data before you pay anything
The call above is the real endpoint, not a recording. A free key gives you 1,000 credits, the other 631 APIs, and the same envelope everywhere.
Endpoints, parameters and credit costs on this page are read from the live catalog and cannot drift from what the API accepts. Field notes were captured on 2026-11-08.