Book GACHA Box
Send your three favorite books as a gift and receive three books picked by someone else. You cannot open the result until the match is ready.
About
This service is independently operated as a book recommendation exchange.
Operator
X account: @Ryu_UEFN
Service launch
April 2026
Main services used
Authentication: X OAuth
Book metadata: ISBNdb API
Hosting: Cloudflare Workers / D1
Bot protection: Cloudflare Turnstile
Advertising and affiliate: Google AdSense / Amazon Associates
Advertising and affiliate disclosure
Book GACHA Box is an Amazon Associate and may earn from qualifying purchases.
Amazon links are search or product pages to help you find the book on Amazon. We do not guarantee price, availability, lowest price, or Kindle availability.