Books
Variants seen in the corpus:
Booksbooks
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 5 Usable, with meaningful gaps to close
Thin 9 Limited public surface area
Emerging 11 Early or largely undocumented
Minimal 28 Almost no public developer surface
MomoxAmanah SunnahBible-apiGanjoorPenguin PublishingQuran CloudRunyankole BibleThe BibleThirukkuralWizard WorldWolne LekturyBarnes & NobleUrantia PapersCrossref Metadata SearchQuran-apiA Bíblia DigitalBhagavad Gita teluguBritish National BibliographyBhagavad GitaBhagavad GitaQuranRig VedaVedic SocietyDangdangGurbaniNowWonderbly *Epic! CreationsBlinkist
APIs with this tag (47)
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 →
Exemplar 5 Complete, well-documented, and agent-ready
HubSpot Commerce Price Books APIHubSpot Commerce Price Books — 16 operation(s) from HubSpot's published OpenAPI.HubSpot CRM Price Books CRM Reads API APIHubSpot CRM Price Books CRM Reads API — 3 operation(s) from HubSpot's published OpenAPI.Polygon Books APILevel-2 order book.Factset Books APIThe Books API from Factset — 3 operation(s) for books.Buttondown Books APIThe Books API from Buttondown — 5 operation(s) covering the Bookshop.org book catalog embedded in newsletters.
Developing 4 Usable, with meaningful gaps to close
Zoho BooksThe Zoho Books API allows you to perform all the operations that you do with the web client. It is built us...Gutendex Books APIQuery and retrieve metadata for Project Gutenberg ebooks.ISBNdb Books APIBook endpointsSpringer Nature Metadata APIThe legacy Metadata API provides metadata retrieval for Springer publications. Returns article and book met...
Thin 10 Limited public surface area
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...FakerAPI Books APIGenerate fake book records.
Emerging 7 Early or largely undocumented
Open Library Editions APIThe Editions API from Open Library — 1 operation(s) for editions.Open Library Search APIThe Search API from Open Library — 2 operation(s) for search.Open Library Search Inside APIFull-text search across the millions of digitized books in the Internet Archive's collection, returning mat...Open Library Works APIThe Works API from Open Library — 1 operation(s) for works.BookStack REST APIThe BookStack REST API provides programmatic access to manage the full content hierarchy of a BookStack ins...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
Amanah 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 websiteUrantia PapersFull-text + semantic search across the Urantia Papers, with audio narration, entities, translationsCrossref Metadata SearchBooks & Articles MetadataQuran-apiFree Quran API Service with 90+ different languages and 400+ translationsBhagavad Gita teluguBhagavad Gita API in telugu and odia languagesBritish National BibliographyBooksBhagavad GitaOpen Source Shrimad Bhagavad Gita API including 21+ authors translation in Sanskrit/English/HindiBhagavad GitaBhagavad Gita textQuranRESTful 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 (9)
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
55.3
log-scaled weighted occurrences
Breadth
1.5
spread across providers
Quality lift
19.8
mean composite of providers using it
Cohesion
2.9
strength of nearest seed neighbor
Related tags
Ebooks 9 co-occurrences
Reading 9 co-occurrences
Publishing 15 co-occurrences
Reviews 5 co-occurrences
News 6 co-occurrences
Public APIs 25 co-occurrences
Library 6 co-occurrences
Media 15 co-occurrences
Where this tag comes from
Provider tag54
Api tag48
Openapi tag7
Openapi op tag18
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
18.7
-5.2 vs catalog 23.9
Mean Agent Readiness
7.4
-4.6 vs catalog 12
Spread
2.5–54.9
median 11.9 · σ 14.5
How the 48 split by band
Exemplar 0Strong 1Developing 5Thin 9Emerging 10Minimal 23
Facet averages, against the whole catalog
| Facet | This cohort | Catalog | Difference | Scored |
|---|---|---|---|---|
| Discoverability | 60.6 | 61.2 | -0.6 | 48 |
| Contract Governance | 4.2 | 6.4 | -2.2 | 48 |
| Contract Quality | 15 | 19.8 | -4.8 | 48 |
| Operational Transparency | 9.2 | 14 | -4.8 | 48 |
| Access Clarity | 20.3 | 26.5 | -6.2 | 48 |
| Developer Ergonomics | 15.6 | 23.4 | -7.8 | 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) | 0% | 10% | -10 |
| MCP server (first-party) | 2% | 13% | -11 |
| Agent Skills | 0% | 0% | 0 |
| OAuth scopes | 6% | 11% | -5 |
| Security | 100% | 97% | +3 |
| Arazzo workflows | 0% | 2% | -2 |
| Governance rules | 17% | 14% | +3 |
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 54.9
- 2 Gutendex 45.5
- 3 The New York Times 45.2
- 4 WorldCat 43.3
- 5 The New York Times Company 43.1
- 6 ISBNdb 41.5
- 7 Google Books 38.9
- 8 Literal Club 37
- 9 Rakuten 36.1
- 10 An API of Ice and Fire 34.8
Top by Agent Readiness
- 1 WorldCat 35.6
- 2 Gutendex 28.7
- 3 API League 27.3
- 4 Next Big Idea Club 26.6
- 5 The New York Times Company 25.8
- 6 An API of Ice and Fire 25.8
- 7 Google Books 24.8
- 8 The New York Times 22.9
- 9 Rakuten 22.9
- 10 Common Sense Media 22.9
All 54 members of this roster resolve to a scored provider in
the catalog.Generated from the catalog build of
15 September 2026, across 27661
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.