Terms of Use

Last updated August 21, 2026.

Welcome to isbnly.com. These Terms of Use govern your use of https://isbnly.com. By accessing this site, you agree to abide by these terms and to comply with all applicable laws. If you don't agree, please don't use the site.

Acceptable use

isbnly.com is free to use for personal, non-commercial ISBN lookups. Book data is served through a rate-limited third-party API, so please don't run automated, bulk, or scripted queries against the site; that can degrade the service for everyone else. If you need bulk or programmatic access to book metadata, that's what ISBNLab.com's own API is for.

Accuracy of book data

Book details shown on isbnly.com come from ISBNLab.com's metadata API. We make reasonable efforts to display it accurately, but we don't guarantee that every field is complete or error-free. If something looks wrong, let us know at hello@isbnly.com.

Purchase links

Links to buy a book point to third-party retailers (such as Amazon and Bookshop.org). isbnly.com doesn't process payments, handle orders, or take responsibility for those retailers' listings, pricing, or fulfillment.

Intellectual property

Everything on this site (text, design, and graphics that are ours) is protected under U.S. and international copyright law. You may not reproduce, distribute, or create derivative works from it without our express written permission.

Feedback

Any feedback or suggestions you send us may be used without compensation or credit to you.

Changes to these terms

We may update these terms from time to time. Your continued use of the site after a change means you accept the new terms.

Contact

Questions about these terms? Email hello@isbnly.com.