Find the actual work.
Start with an ISBN or an imperfect title and author. Ambiguous records stay ambiguous.
Collected API
Better book context. Not another catalog feed.
Collected is an enrichment layer for teams that already have titles, ISBNs, and covers. Send a book record. Get the canonical work and the context your product needs to explain, match, and recommend it.
● Protected API online · access rolling out
What it does
Resolve first. Enrich second.
A confident enrichment attached to the wrong book is still wrong. Identity and uncertainty stay part of the response.
Add what readers care about.
Original descriptions, reading experience, series, authors, editions, and recognition where the evidence supports it.
Keep the receipts.
Confidence, provenance, audit state, and record versions stay attached to the result.
Work through a catalog.
Resolve or hydrate bounded batches without replacing the catalog and cover providers you already use.
The response
More useful than a title, cover, and ISBN.
Canonical identity
Work IDs, editions, ISBNs, authors, series, and source aliases
Reader context
Genres, themes, tone, pace, prose, structure, setting, and reading effort
Editorial layer
Original descriptions and stored author profiles
Trust layer
Provenance class, confidence, audit status, and record versions
The boundary
Use your existing catalog and cover provider.
We do not sell a cover corpus, retail inventory, availability, or a generic ISBN database. Collected makes existing book records more useful.
Developer access
Start with the contract.
The production API is online and protected. Customer accounts, key management, usage reporting, and billing are being introduced in stages.