collected
API access
Collected API

Preview book metadata for a CSV

Try up to five books to check matches, descriptions and reading profiles.

Up to five rows: isbn, title, author. Only these fields are sent; your file isn’t stored.

English / US edition preference. Free preview: 20 books per 10 minutes, 50 per day. No account required.

Your preview

Enter a book to see its edition, description and reading profile.

Results come from the live catalog. Confirm the title and author before using a match.

About matches and API use

A work is the book itself; an edition is a particular publication. ISBNs, publishers and page counts belong to editions. Uncertain matches and missing fields are shown explicitly.

This is a limited English / US preview, with up to five CSV rows. Published catalog improvements appear in new lookups. Descriptions and profiles are AI-assisted and reviewed before publication.

The preview is for evaluating coverage. Commercial access, storage and reuse follow your approved API terms; the preview does not provide a full catalog export.

API documentation ↗