# HAL-ENS Open Archive — ENS-PARIS collection

**Canonical:** https://apis.io/apis/ens-paris/hal-ens/  
**Provider:** École Normale Supérieure de Paris — https://apis.io/providers/ens-paris/  
**Base URL:** https://api.archives-ouvertes.fr/search/ENS-PARIS/  
**Documentation:** https://hal-ens.archives-ouvertes.fr/

HAL-ENS Open Archive — ENS-PARIS collection is one of 3 APIs that [École Normale Supérieure de Paris](https://apis.io/providers/ens-paris/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Research, Open Access, Institutional Repository, OAI-PMH, and HAL. The published artifact set on APIs.io includes API documentation and an API reference.

ENS research output is deposited into the ENS-PARIS collection of HAL, the French national open archive operated by CCSD (CNRS). The collection is real and substantial — HAL's ENS-scoped Search API returns 84,784 records — and it is harvestable as the OAI-PMH set collection:ENS-PARIS. The data and the curation are ENS's; the platform, the protocol endpoints and the API contract are CCSD's, so nothing is stored under this institution and the surface is recorded as a tenant relationship rather than an ENS API. The ENS portal front end at hal-ens.archives-ouvertes.fr is live but serves a bot challenge to automated clients.

## Machine-readable artifacts (5)

- **ResearchRepository** — https://hal-ens.archives-ouvertes.fr/
- **x-oai-pmh** — https://api.archives-ouvertes.fr/oai/hal/?verb=ListIdentifiers&metadataPrefix=oai_dc&set=collection:ENS-PARIS
- **Documentation** — https://api.archives-ouvertes.fr/docs/oai
- **APIReference** — https://api.hal.science/docs/
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/ens-paris/refs/heads/main/conformance/ens-paris-conformance.yml

## Other École Normale Supérieure de Paris APIs (2)

- [ENS-PSL Identity Provider (SAML 2.0 / Shibboleth)](https://apis.io/apis/ens-paris/identity-federation/)
- [ENS-PSL Library Catalogue (Koha REST + OAI-PMH)](https://apis.io/apis/ens-paris/library-catalog/)

## Tags

Research, Open Access, Institutional Repository, OAI-PMH, HAL

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