Personal library · Marketplace · API
Every book you own,
catalogued.
Stacks keeps a record of your collection, turns any copy into a listing when you're ready to sell, and hands the whole catalogue to you over an API.
Catalogue card
The Left Hand of Darkness
Ursula K. Le Guin
Call no.823.914 LEG
ISBN978-0-441-47812-5
Catalogued 23 AUG 2026
What Stacks does
Three ways to work with your books.
Your shelf
Catalogue what you own
Add books by ISBN, note where each one lives, and see your whole collection at a glance.
Marketplace
Sell straight from your shelf
Turn any book in your library into a listing, manage offers, and keep track of what's sold.
For developers
Pull your catalogue anywhere
Query your library over a REST API — build your own reading app or script your own inventory.
GET /api/v1/books?shelf=fiction