# DataCite Consortium Membership (VIOJ)

**Canonical:** https://apis.io/apis/leiden/datacite/  
**Provider:** Leiden University — https://apis.io/providers/leiden/  
**Base URL:** https://api.datacite.org/providers/vioj  
**Documentation:** https://api.datacite.org/providers/vioj

DataCite Consortium Membership (VIOJ) is one of 9 APIs that [Leiden University](https://apis.io/providers/leiden/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include DataCite, DOI, Registry, Persistent Identifiers, and Research Data.

Leiden University is a DataCite consortium_organization with symbol VIOJ, organizationType academicInstitution, country NL, and rorId https://ror.org/027bh9e22, registered 2023-02-08. Two repositories are registered under it — vioj.dxnjnk "Leiden Repository" (scholarlypublications.universiteitleiden.nl) and vioj.mcaazz "Yoda Portal Leiden University". This is a registry Leiden is registered in; the DataCite REST API contract is DataCite's and is not saved here. The DataCite Commons human page (commons.datacite.org/providers/vioj) answers our probes with HTTP 429 and is therefore not emitted as a pointer.

## Machine-readable artifacts (1)

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

## Other Leiden University APIs (8)

- [Scholarly Publications OAI-PMH](https://apis.io/apis/leiden/scholarly-oai/)
- [Leiden University SAML 2.0 Identity Provider Metadata](https://apis.io/apis/leiden/saml-idp/)
- [SURFconext Federation Membership](https://apis.io/apis/leiden/surfconext/)
- [Crossref Membership — Leiden University Press](https://apis.io/apis/leiden/crossref/)
- [ROR Registration](https://apis.io/apis/leiden/ror/)
- [Yoda Research Data Management Portal (Leiden tenancy)](https://apis.io/apis/leiden/yoda/)
- [D2L Brightspace LMS (Leiden tenancy)](https://apis.io/apis/leiden/brightspace/)
- [Library Discovery Catalogue (Ex Libris Primo VE tenancy)](https://apis.io/apis/leiden/primo/)

## Tags

DataCite, DOI, Registry, Persistent Identifiers, Research Data

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