The Discovery API allows you to surface both WorldCat and WorldCat Discovery central index data in search results, including: Materials held by your library and ...
OCLC publishes 1 API on the APIs.io network. Tagged areas include Library, WorldCat, Discovery, and Bibliographic.
OCLC’s developer surface includes engineering blog and 2 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Education & Research regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for
this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero:
never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and
several others — scorable at all.
The six quality facets above are damped to 85 points between them,
because the conditional facet above carries the other
15. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 85% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/oclc: open an issue to ask a question, or submit a pull request to add artifacts.
Submit an artifact on GitHub — free →Manage your own listing — the Influence plan, $499/mo →
The Discovery API allows you to surface both WorldCat and WorldCat Discovery central index data in search results, including: Materials held by your library and ...
aid: oclc
name: OCLC
description: 'The Discovery API allows you to surface both WorldCat and WorldCat Discovery central index data in search results,
including: Materials held by your library and ...'
type: Index
deliveryModel:
model: unknown
open_source: false
commercial: false
callable_host: false
label: Delivery model not determined — needs a product licence on record
confidence: low
source:
- none
generated: '2026-08-28'
method: derived
accessModel:
pricing: freemium
onboarding: unknown
trial: false
try_now: false
public: false
label: Freemium
confidence: medium
source:
- plans
generated: '2026-07-22'
method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/oclc.png
tags:
- Library
- WorldCat
- Discovery
- Bibliographic
created: '2025-01-08'
modified: '2026-04-28'
url: https://raw.githubusercontent.com/api-evangelist/oclc/refs/heads/main/apis.yml
specificationVersion: '0.23'
common:
- type: DomainSecurity
url: security/oclc-domain-security.yml
- type: LinkedIn
url: https://www.linkedin.com/company/oclc
- type: Blog
url: https://www.oclc.org/en/news.html
apis:
- aid: oclc:oclc
name: OCLC
description: 'The Discovery API allows you to surface both WorldCat and WorldCat Discovery central index data in search
results, including: Materials held by your library and ...'
humanURL: https://www.oclc.org/developer/api/oclc-apis/worldcat-discovery-api.en.html
tags:
- Library
- WorldCat
- Discovery
properties:
- type: Documentation
url: https://www.oclc.org/developer/api/oclc-apis/worldcat-discovery-api.en.html
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we
store it to create your key and to recognise you if you sign in with another
provider. See our Privacy Policy and
Terms.