Book Publishing (ONIX / ISBN / EPUB supply chain)
Register + standard market (bisg / edrlab participation, isbn registration agencies). The Kin Score Market layer reads each provider in its market: who it integrates with, how deep those integrations go, and where the market publishes its own structure. Methodology.
Where this market publishes its structure
- BISG member directory (bisg.org/member-directory/, public list endpoint) machine-readable, 202 listings, 161 organisations (41 people skipped); names only; 5 linked; John Wiley & Sons not linked (Wikidata resolves to Wiley-VCH)
- International ISBN Agency national agencies (isbn-international.org/agencies, public GetAgency endpoint) machine-readable, 154 agencies, 135 with a website; 0 linked (69 public bodies held; commercial agencies such as Bowker and Nielsen are not in the catalog)
- EDRLab members directory (members.edrlab.org) machine-readable, 134 members, 120 with a website; 1 linked (OverDrive); 112 domains in no catalog repo (harvest gap)
- EDItEUR members (editeur.org/8/EDItEUR-Members/) not machine-readable: HTTP 202 + SiteGround sgcaptcha bot challenge on every request (retried 4x); not bypassed
- BISG /page/Members not machine-readable: 404; the directory moved to /member-directory/ (read above)
- Amazon KDP / Ingram CoreSource certified ONIX partner lists not machine-readable: no such public register is published; Ingram's 450+ channel partners are destinations, not certified vendors
- EDRLab Readium LCP certified apps & servers (edrlab.org/readium-lcp/certified-apps-servers/) machine-readable, narrative of LCP deployments, not a certification register: SHAPE, report-only, never written
Own = declares at least one integration itself; covered = visible only because an aggregator, standards body, regulator or partner contract names it; distribution-only = listed only on cloud marketplaces it sells through, a channel reported beside, never counted as its own declared integrations; undeclared = nothing we can read, so no number; declares_compatibility = providers with a `compatible` shape vote, report only (kin, 2026-10-13): never counted as own, never in depth or position.
Taxonomy how this market maps onto apis.io
Derived 2026-10-21 from the 29 providers in this market we could resolve in the catalog. The percentage is the share of those providers carrying each one; it describes the market, not the tag or industry. Tag groups have no page of their own yet, so they are listed unlinked.
| Tags | Books 45%, Publishing 41%, Media 24%, Research 24%, Library 24%, Scholarly Publishing 24%, Ebooks 21% |
|---|---|
| Tag groups | Media 66%, Books 55%, Education 52% |
| Industries | Music, Audio & Creator Economy 66%, Education & EdTech 45%, Media 31%, Data & Analytics 21% |
share of resolved cohort carrying it; tags >=0.20 & >=3 members (max 12, junk dropped), tag_groups >=0.20 (cooccurrence, non-cross-cutting; max 8), industries >=0.20 (max 6), areas >=0.10 (max 6; areas are keyword-matched and sparse), capabilities L1 >=0.20 (max 8); derive-market-taxonomy.py
Leaders by position (provisional)
Provisional: grouped by position, depth compared within a position only. Distribution (cloud marketplaces) and iPaaS bridges are counted beside position, never inside it. Unknown-builder listings are left out of position shares and counted here.
builds-on 3 · publishes apps on other platforms' stores
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| The New York Times Company | 22.2 | 3 | 0 / 3 | 0 | 0 | 2 | ipaas-bridge 67%, builds-on-platform 33% |
| Springer Nature | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | builds-on-platform 100% |
| Ximalaya | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | builds-on-platform 100% |
covered 1 · reached mainly through aggregators
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| Rakuten | 34.9 thin | 2 | 0 / 2 | 0 | 0 | 0 | covered 100% |
standard 9 · listed by a voluntary standard's own directory
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| OCLC | 51.7 | 8 | 0 / 8 | 0 | 1 | 0 | contract 12%, standard 75%, distribution 12% |
| OverDrive | 51.7 | 4 | 0 / 4 | 0 | 0 | 0 | standard 50%, builds-on-platform 50% |
| Scribd | 44.1 | 3 | 0 / 3 | 0 | 1 | 0 | standard 67%, distribution 33% |
| Kortext | 42.5 | 5 | 0 / 5 | 0 | 2 | 0 | standard 40%, builds-on-platform 20%, distribution 40% |
| Taylor & Francis | 34.5 thin | 2 | 0 / 2 | 0 | 0 | 0 | standard 100% |
| Elsevier | 32.6 thin | 2 | 0 / 2 | 0 | 1 | 0 | standard 50%, distribution 50% |
| Barnes & Noble | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| IEEE Xplore | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
| VoyceMe | 17.2 thin | 1 | 0 / 1 | 0 | 0 | 0 | standard 100% |
long-tail 3 · reached only through iPaaS bridges
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| ConvertAPI | 14.6 | 3 | 0 / 3 | 0 | 1 | 2 | ipaas-bridge 67%, distribution 33% |
| Gutendex | 5.0 thin | 2 | 0 / 2 | 0 | 0 | 2 | ipaas-bridge 100% |
| arXiv | 2.5 thin | 1 | 0 / 1 | 0 | 0 | 1 | ipaas-bridge 100% |
undeclared 13 · declares nothing we can read: no number
| Provider | Depth | Integrations | In / out | Unknown builder | Distribution | iPaaS bridge | Mix |
|---|---|---|---|---|---|---|---|
| AniList | undeclared | - | - | - | - | - | |
| API League | undeclared | - | - | - | - | - | |
| Common Sense Media | undeclared | - | - | - | - | - | |
| Crossref | undeclared | - | - | - | - | - | |
| EPUB Translator | undeclared | - | - | - | - | - | |
| An API of Ice and Fire | undeclared | - | - | - | - | - | |
| Google Books | undeclared | - | - | - | - | - | |
| ISBNdb | undeclared | - | - | - | - | - | |
| Bandung Institute of Technology | undeclared | - | - | - | - | - | |
| Literal Club | undeclared | - | - | - | - | - | |
| PubMed | undeclared | - | - | - | - | - | |
| Wikisource | undeclared | - | - | - | - | - | |
| WorldCat | undeclared | - | - | - | - | - |
Generated 2026-10-21 from API Evangelist's own files; nothing on this page is a model's judgement. Provisional and unweighted; not part of the Kin Score composite or agent readiness. Read the Market layer methodology. Disagree with an edge? Every edge cites its evidence and can be corrected through the normal correction path.