Books
Providers using this tag (54)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Strong 1 Solid coverage with minor gaps
Developing 3 Usable, with meaningful gaps to close
Thin 8 Limited public surface area
Emerging 12 Early or largely undocumented
Minimal 30 Almost no public developer surface
BookoMomoxBarnes & NobleUrantia PapersAmanah SunnahBible-apiGanjoorPenguin PublishingQuran CloudRunyankole BibleThe BibleThirukkuralWizard WorldWolne LekturyBritish National BibliographyEpic! CreationsA Bíblia DigitalBhagavad GitaBhagavad GitaBhagavad Gita teluguCrossref Metadata SearchQuran-apiDangdangWonderbly *QuranBetter World BooksBlinkistRig VedaVedic SocietyGurbaniNow
APIs with this tag (44)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Strong 3 Solid coverage with minor gaps
Zoho BooksThe Zoho Books API allows you to perform all the operations that you do with the web client. It is built us...Buttondown Books APIThe Books API from Buttondown — 5 operation(s) covering the Bookshop.org book catalog embedded in newsletters.API League Books APIThe Books API from API League — 2 operation(s) for books.
Developing 1 Usable, with meaningful gaps to close
Thin 11 Limited public surface area
ISBNdb Books APIBook endpointsSpringer Nature Metadata APIThe legacy Metadata API provides metadata retrieval for Springer publications. Returns article and book met...Literal GraphQL APIGraphQL API for Literal Club that provides access to book data, reading states, shelves, reviews, highlight...Rakuten Books Book Search APISearch Rakuten Books for Japanese-language and translated books by title, author, ISBN, publisher, and othe...Rakuten Books Foreign Book Search APISearch Rakuten Books foreign-language books catalog (mostly English-language).Rakuten Books Genre Search APIReturns the genre tree for Rakuten Books, used for browse and navigation across the unified Books catalog.Rakuten Books Total Search APIUnified search across all Rakuten Books catalogs (books, CDs, DVDs, games, software, magazines), returning ...An API of Ice and Fire Books APIBooks from the A Song of Ice and Fire seriesCommon Sense Media Reviews APIJSON REST API exposing Common Sense Media's reviews and ratings catalog. Each review includes recommended a...Taylor & Francis Content APIThe Taylor & Francis Content API provides programmatic access to eBook and chapter downloads from the taylo...Gutendex APIGutendex is a JSON web API for Project Gutenberg ebook metadata. It provides access to the catalog of 75,00...
Emerging 8 Early or largely undocumented
FakerAPI Books APIGenerate fake book records.BookStack REST APIThe BookStack REST API provides programmatic access to manage the full content hierarchy of a BookStack ins...Open Library Editions APIRetrieve edition-level records (specific printings, ISBNs, formats) by Open Library Edition ID, ISBN-10, IS...Open Library Search APISearch Open Library's catalog of books, authors, lists, and subjects. Returns JSON results for full-text an...Open Library Search Inside APIFull-text search across the millions of digitized books in the Internet Archive's collection, returning mat...Open Library Works APIRetrieve work-level records (the abstract concept of a book independent of edition) by Open Library Work ID...Blurb Print APIRESTful print-on-demand API that lets businesses integrate Blurb's book, magazine, and notebook printing an...Naver Search Open APINaver Search API returns search results across Naver's catalogs: blog, news, book, encyclopedia, café artic...
Minimal 21 Almost no public developer surface
Urantia PapersFull-text + semantic search across the Urantia Papers, with audio narration, entities, translationsAmanah SunnahSemantic search across Quran, Hadith, Tafsir & 18K+ Rijal narratorsBible-apiFree Bible API with multiple languagesGanjoorClassic Persian poetry works including access to related manuscripts, recitations and music tracksPenguin PublishingBooks, book covers and related dataQuran CloudA RESTful Quran API to retrieve an Ayah, Surah, Juz or the entire Holy QuranRunyankole BibleFree REST API for the Runyankore-Rukiga Bible — 66 books, 31106 versesThe BibleEverything you need from the Bible in one discoverable placeThirukkural1330 Thirukkural poems and explanation in Tamil and EnglishWizard WorldGet information from the Harry Potter universeWolne LekturyAPI for obtaining information about e-books available on the WolneLektury.pl websiteBritish National BibliographyBooksBhagavad GitaOpen Source Shrimad Bhagavad Gita API including 21+ authors translation in Sanskrit/English/HindiBhagavad GitaBhagavad Gita textBhagavad Gita teluguBhagavad Gita API in telugu and odia languagesCrossref Metadata SearchBooks & Articles MetadataQuran-apiFree Quran API Service with 90+ different languages and 400+ translationsQuranRESTful Quran API with multiple languagesRig VedaGods and poets, their categories, and the verse meters, with the mandal and sukta numberVedic SocietyDescriptions of all nouns (names, places, animals, things) from vedic literatureGurbaniNowFast and Accurate Gurbani RESTful API
Companies reaching this through an API (6)
These companies publish an API, specification or operation carrying “Books” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Score breakdown
Frequency
54.9
log-scaled weighted occurrences
Breadth
1.4
spread across providers
Quality lift
18.3
mean composite of providers using it
Cohesion
3.1
strength of nearest seed neighbor
Related tags
Ebooks 9 co-occurrences
Reading 9 co-occurrences
Publishing 15 co-occurrences
Reviews 5 co-occurrences
Library 8 co-occurrences
Public APIs 24 co-occurrences
Media 13 co-occurrences
Metadata 6 co-occurrences
Where this tag comes from
Provider tag54
Api tag45
Openapi tag6
Openapi op tag16
Cohort brief
Auto-generatedThe 48 providers in the APIs.io catalog tagged Books, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.
Providers
48
all scored
Mean Kin Score
16.1
-6.8 vs catalog 22.9
Mean Agent Readiness
6.7
-5.2 vs catalog 11.9
Spread
2.9–60.3
median 10.4 · σ 14.2
How the 48 split by band
Exemplar 0Strong 1Developing 3Thin 8Emerging 11Minimal 25
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Contract Governance | 2.7 | 6.3 | -3.6 | 48 |
| Discoverability | 54.4 | 58.1 | -3.7 | 48 |
| Contract Quality | 12.6 | 17.6 | -5 | 48 |
| Operational Transparency | 8.5 | 13.7 | -5.2 | 48 |
| Access Clarity | 19.1 | 26.5 | -7.4 | 48 |
| Developer Ergonomics | 14.7 | 23.2 | -8.5 | 48 |
A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.
What this cohort publishes
| Artifact | This cohort | Catalog | Difference |
|---|---|---|---|
| MCP server (any) | 2% | 14% | -12 |
| MCP server (first-party) | 2% | 12% | -10 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 6% | 11% | -5 |
| Security | 100% | 98% | +2 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 15% | 14% | +1 |
mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.
Top by Kin Score
- 1 API League 60.3
- 2 The New York Times Company 42.3
- 3 WorldCat 41.6
- 4 Gutendex 41
- 5 ISBNdb 38.5
- 6 Literal Club 37.1
- 7 Google Books 34.3
- 8 Rakuten 34.3
- 9 An API of Ice and Fire 31.7
- 10 Common Sense Media 30.8
Top by Agent Readiness
- 1 WorldCat 35.6
- 2 API League 30.6
- 3 Gutendex 28.7
- 4 The New York Times Company 25.8
- 5 An API of Ice and Fire 25.8
- 6 Google Books 24.8
- 7 Rakuten 22.9
- 8 Common Sense Media 22.9
- 9 Open Library 20
- 10 ISBNdb 19.8
All 54 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
5 October 2026, across 29093
providers, using the same computation served by the
APIs.io cohort API. Briefs are published for rosters of
5 or more scored providers; below that a distribution is not meaningful.
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.