# Crossref Memberships — Keio units

**Canonical:** https://apis.io/apis/keio/crossref/  
**Provider:** Keio University — https://apis.io/providers/keio/  
**Base URL:** https://api.crossref.org/members/1082  
**Documentation:** https://www.crossref.org/

Crossref Memberships — Keio units is one of 9 APIs that [Keio University](https://apis.io/providers/keio/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include DOI, Identifier Registry, Crossref, Scholarly Publishing, and Membership.

Two Keio units are Crossref members in their own right: member 1082, "Keio Journal of Medicine", DOI prefix 10.2302, with 1,743 DOIs (54 current, 1,689 backfile) reaching back to 1952; and member 1443, "Department of Anatomy Keio University School of Medicine", DOI prefix 10.2535. The memberships are recorded as they are actually registered — at unit level rather than as a single corporate membership — because that is the fact. Crossref's own API is the registry's, not Keio's, and is never saved here.

## Machine-readable artifacts (1)

- **Conformance** — https://raw.githubusercontent.com/api-evangelist/keio/refs/heads/main/conformance/keio-conformance.yml

## Other Keio University APIs (8)

- [KOARA OAI-PMH Metadata API](https://apis.io/apis/keio/koara-oai-pmh/)
- [Keio Media Center Digital Collections IIIF API](https://apis.io/apis/keio/iiif/)
- [Keio University Identity Provider (GakuNin / eduGAIN)](https://apis.io/apis/keio/gakunin-idp/)
- [Keio Okta Tenant — OpenID Connect](https://apis.io/apis/keio/okta/)
- [K-RIS — Keio Research Information System (Elsevier Pure)](https://apis.io/apis/keio/k-ris/)
- [Keio Figshare Research Data Repository](https://apis.io/apis/keio/figshare/)
- [DataCite Membership — provider `keio`](https://apis.io/apis/keio/datacite/)
- [ROR Registration — Keio University](https://apis.io/apis/keio/ror/)

## Tags

DOI, Identifier Registry, Crossref, Scholarly Publishing, Membership

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/keio/crossref/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/keio/.