Try any of 2778 endpoints — live.
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Search BOOK-OFF Online's 6,152,410-item catalogue — Japan's largest second-hand chain — across its six genres (books, comics/manga, magazines, CD, DVD & Blu-ray, games) or its 61,208 multi-volume sets. ONE ROW IS ONE CATALOGUE PRODUCT, not a copy: BOOK-OFF is a single retailer, so each product has one second-hand price and, where it is still published, one new price (measured: searching an exact ISBN-13/JAN returns exactly one row, 3 of 3 tried). Each row carries which condition surface it is (`surface` = used/new/set) together with the price, the publisher's list price, BOOK-OFF's own discount figure and its own pre-markdown price with the date it applied. 🔴 Send at least one of keyword, author, publisher, genre, genre_code or sets_only. Page size is the source's own 30, 60, 120 and is exact. The hard ceiling is page 999 (page 1000 → HTTP 404), so at most 119,880 items are reachable per query. Past the last real page the source returns an EMPTY grid, not filler rows, and `stop_reason` says `past_last_page`.
curl -X POST https://api.reefapi.com/bookoff/v1/search \
-H "x-api-key: $REEF_KEY" \
-H "content-type: application/json" \
-d '{"keyword":"ワンピース"}'Hit Send to run this endpoint live.
What you can run here, without an account
ReefAPI is one HTTP gateway to 438 live web-data APIs covering 2778 endpoints across 14 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
| ecommerce | 191 |
| classifieds | 99 |
| media | 25 |
| real-estate | 21 |
| utilities | 19 |
| developer-tools | 18 |
| jobs | 17 |
| reviews | 15 |
| social | 12 |
| travel | 9 |
| finance | 5 |
| other | 3 |
| search-seo | 2 |
| government | 2 |