# HAL Reference (Référentiels) API

**Canonical:** https://apis.io/apis/ens-lyon/hal-ref/  
**Provider:** École Normale Supérieure de Lyon — https://apis.io/providers/ens-lyon/  
**Base URL:** https://api.archives-ouvertes.fr/ref/  
**Documentation:** https://api.archives-ouvertes.fr/docs/ref

HAL Reference (Référentiels) API is one of 4 APIs that [École Normale Supérieure de Lyon](https://apis.io/providers/ens-lyon/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Reference, REST, Authorities, and Research. The published artifact set on APIs.io includes API documentation.

HAL's reference-data API for querying controlled vocabularies and authorities (authors, structures/labs, journals, domains, ANR projects) used across HAL, including ENS de Lyon's structures and authors.

## Machine-readable artifacts (1)

- **Documentation** — https://api.archives-ouvertes.fr/docs/ref

## Other École Normale Supérieure de Lyon APIs (3)

- [HAL-ENS-LYON OAI-PMH](https://apis.io/apis/ens-lyon/hal-oai-pmh/)
- [HAL Search API (ens-lyon collection)](https://apis.io/apis/ens-lyon/hal-search/)
- [HAL SWORD Deposit API](https://apis.io/apis/ens-lyon/hal-sword/)

## Tags

Reference, REST, Authorities, Research

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