École Normale Supérieure de Paris

École normale supérieure - PSL (ENS, rue d'Ulm) is a French grande école and constituent institution of Université PSL, running 15 departments, 35 research laboratories and a ten-library network in the Quartier latin of Paris. ENS publishes no developer portal, no OpenAPI description and no API key programme, and this profile does not pretend otherwise. What it does operate, verified live on 2026-08-30, is two machine-readable surfaces on its own domain: a SAML 2.0 / Shibboleth identity provider at federation.ens.psl.eu, registered in the RENATER Fédération Éducation-Recherche with scopes ens.fr and ens.psl.eu; and the ENS-PSL library catalogue at catalogue.bib.ens.psl.eu, a Koha deployment exposing an unauthenticated REST API and an OAI-PMH 2.0 provider whose Identify names the repository "bibliothèques de l'ENS-PSL". Alongside those, ENS holds one tenant relationship worth recording — the ENS-PARIS collection inside the national HAL open archive, operated by CCSD/CNRS, harvestable as the OAI-PMH set collection:ENS-PARIS and queryable through HAL's ENS-scoped Search API. An earlier version of this profile credited ENS with the French Ministry of Higher Education's Opendatasoft Explore API; that contract is Opendatasoft's, deployed by the ministry, and it and everything derived from it were removed on 2026-08-30.

École Normale Supérieure de Paris publishes 3 APIs on the APIs.io network. Tagged areas include University, Higher Education, Education, France, and Université PSL.

The École Normale Supérieure de Paris catalog on APIs.io includes 1 JSON-LD context.

École Normale Supérieure de Paris’ developer surface includes authentication and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

23.8/100 emerging ▬ flat Agent 5/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreeOpen⚡ Free to try

3 APIs

University Higher Education Education FranceUniversité PSLResearch Identity Federation Library Open Access OAI-PMH

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 23.8/100 · emerging

Contract Quality 3.0 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 4.0 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 6.3 / 9

Regulatory Posture 5.8 / 15

Agent readiness — 5/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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/ens-paris: 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 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

ENS-PSL Identity Provider (SAML 2.0 / Shibboleth)

ENS-PSL runs its own Shibboleth identity provider under its own registrable domain. The SAML 2.0 entity descriptor is served at https://federation.ens.psl.eu/idp/shibboleth (HTT...

ENS-PSL Library Catalogue (Koha REST + OAI-PMH)

The catalogue of the ten ENS-PSL libraries, hosted at catalogue.bib.ens.psl.eu under the institution's own domain and integrated by BibLibre. Two machine-readable interfaces ans...

HAL-ENS Open Archive — ENS-PARIS collection

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 E...

Pricing Plans 1

Published pricing tiers and plan structures.

Ens Paris Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Ens Paris Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Ens Paris Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Ens Paris Context

7 classes · 4 properties

JSON-LD

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Ens Paris Authentication

saml/basic/none · 4 schemes

SECURITY

Ens Paris Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

x-vocabulary

x-vocabulary

x-json-ld-context

x-json-ld-context

Build 1

SDKs, sample code, and the tooling you integrate with

LibraryCatalog

LibraryCatalog

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

Website

Website

LinkedIn

BlogRSS

BlogRSS

x-blogs

x-blogs

Other 3

Properties that don't map to a standard resource type

IdentityFederation

IdentityFederation

ResearchRepository

ResearchRepository

Review

Review

Source (apis.yml)

aid: ens-paris
name: École Normale Supérieure de Paris
x-type: university
x-category: Public Research University
description: 'École normale supérieure - PSL (ENS, rue d''Ulm) is a French grande école and constituent institution of Université
  PSL, running 15 departments, 35 research laboratories and a ten-library network in the Quartier latin of Paris. ENS publishes
  no developer portal, no OpenAPI description and no API key programme, and this profile does not pretend otherwise. What
  it does operate, verified live on 2026-08-30, is two machine-readable surfaces on its own domain: a SAML 2.0 / Shibboleth
  identity provider at federation.ens.psl.eu, registered in the RENATER Fédération Éducation-Recherche with scopes ens.fr
  and ens.psl.eu; and the ENS-PSL library catalogue at catalogue.bib.ens.psl.eu, a Koha deployment exposing an unauthenticated
  REST API and an OAI-PMH 2.0 provider whose Identify names the repository "bibliothèques de l''ENS-PSL". Alongside those,
  ENS holds one tenant relationship worth recording — the ENS-PARIS collection inside the national HAL open archive, operated
  by CCSD/CNRS, harvestable as the OAI-PMH set collection:ENS-PARIS and queryable through HAL''s ENS-scoped Search API. An
  earlier version of this profile credited ENS with the French Ministry of Higher Education''s Opendatasoft Explore API; that
  contract is Opendatasoft''s, deployed by the ministry, and it and everything derived from it were removed on 2026-08-30.'
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: false
  callable_host: true
  label: Institution-operated endpoints · you call their host
  confidence: high
  source:
  - probed
  generated: '2026-08-30'
  method: probed
accessModel:
  pricing: free
  onboarding: open
  trial: false
  try_now: true
  public: true
  label: Free · No registration for public reads; federated identity otherwise
  confidence: high
  source:
  - probed
  - authentication
  generated: '2026-08-30'
  method: probed
position: Producing
access: Public
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/ens-paris.png
url: https://raw.githubusercontent.com/api-evangelist/ens-paris/refs/heads/main/apis.yml
tags:
- University
- Higher Education
- Education
- France
- Université PSL
- Research
- Identity Federation
- Library
- Open Access
- OAI-PMH
specificationVersion: '0.23'
created: '2026-06-03'
modified: '2026-08-30'
x-coverage:
  state: covered
  reason: covered
  detail: 'ENS-PSL operates no developer portal, no published OpenAPI and no API key programme, and a subdomain sweep found
    nothing at api., data., developer., opendata., gitlab. or git. under ens.psl.eu. Two institution-operated machine-readable
    surfaces were nonetheless found and verified live: the ENS-PSL Shibboleth SAML identity provider and the ENS-PSL Koha
    library catalogue (public REST routes plus an OAI-PMH 2.0 provider). One tenant relationship is recorded: the ENS-PARIS
    collection on the national HAL platform. Two contracts previously attributed to ENS — the Opendatasoft Explore API v2.1
    running on the French Ministry''s data.enseignementsup-recherche.gouv.fr portal, with info.contact support@opendatasoft.com
    and license "Copyright Opendatasoft" — were vendor contracts and were removed together with every schema, structure, example,
    ruleset and collection derived from them. No ENS Figshare tenancy exists: ens.figshare.com and ens-psl.figshare.com return
    the same empty HTTP 202 as a nonsense subdomain, so the host is a wildcard and not evidence of a tenancy.'
  generated: '2026-08-30'
  method: probed
  evidence:
  - url: https://federation.ens.psl.eu/idp/shibboleth
    status: 200
  - url: https://metadata.federation.renater.fr/renater/main/main-idps-renater-metadata.xml
    status: 200
  - url: https://catalogue.bib.ens.psl.eu/cgi-bin/koha/oai.pl?verb=Identify
    status: 200
  - url: https://catalogue.bib.ens.psl.eu/api/v1/public/libraries
    status: 200
  - url: https://api.archives-ouvertes.fr/oai/hal/?verb=ListIdentifiers&metadataPrefix=oai_dc&set=collection:ENS-PARIS
    status: 200
  - url: https://www.ens.psl.eu/en
    status: 200
  - url: https://www.ens.psl.eu/jsonapi
    status: 404
  - url: https://ens.figshare.com
    status: 202
apis:
- aid: ens-paris:identity-federation
  name: ENS-PSL Identity Provider (SAML 2.0 / Shibboleth)
  x-operator: institution
  description: ENS-PSL runs its own Shibboleth identity provider under its own registrable domain. The SAML 2.0 entity descriptor
    is served at https://federation.ens.psl.eu/idp/shibboleth (HTTP 200, application/xml) and declares SingleSignOnService
    endpoints for the HTTP-POST and HTTP-Redirect bindings plus the SAML 1.x Shibboleth AuthnRequest profile. The entity is
    registered in the RENATER Fédération Éducation-Recherche under OrganizationName "Ecole Normale Supérieure de Paris", asserting
    shibmd:Scope ens.fr and ens.psl.eu. This is the one surface ENS both operates and describes in a machine-readable format;
    there is no self-serve access — relying parties join through the federation.
  humanURL: https://services.renater.fr/federation/en/index
  baseURL: https://federation.ens.psl.eu/idp/
  tags:
  - Identity Federation
  - SAML
  - Shibboleth
  - Single Sign-On
  - RENATER
  properties:
  - type: IdentityFederation
    url: https://federation.ens.psl.eu/idp/shibboleth
  - type: Documentation
    url: https://services.renater.fr/federation/en/index
  - type: Conformance
    url: conformance/ens-paris-conformance.yml
  - type: Authentication
    url: authentication/ens-paris-authentication.yml
- aid: ens-paris:library-catalog
  name: ENS-PSL Library Catalogue (Koha REST + OAI-PMH)
  x-operator: institution
  description: The catalogue of the ten ENS-PSL libraries, hosted at catalogue.bib.ens.psl.eu under the institution's own
    domain and integrated by BibLibre. Two machine-readable interfaces answer publicly. The Koha REST API v1 serves unauthenticated
    /api/v1/public/* routes — verified against /api/v1/public/libraries, which returns the real ENS branch records with @ens.psl.eu
    contact addresses — and browses through a Swagger UI at /api/v1/.html; patron and staff routes require a library credential
    and no registration path is published. An OAI-PMH 2.0 provider at /cgi-bin/koha/oai.pl identifies as "bibliothèques de
    l'ENS-PSL" and exposes one set, CATALOGUE. Note the OAI provider advertises a baseURL of /opac/oai.pl which returns 404
    from outside; the working base is the cgi-bin path recorded here. The interface contract is Koha's own — an open-source
    ILS every Koha library ships — so no OpenAPI is stored under this institution; the deployment, the domain and the records
    are ENS's.
  humanURL: https://catalogue.bib.ens.psl.eu/api/v1/.html
  baseURL: https://catalogue.bib.ens.psl.eu/api/v1/
  tags:
  - Library
  - Library Catalog
  - Koha
  - OAI-PMH
  - Metadata
  properties:
  - type: LibraryCatalog
    url: https://catalogue.bib.ens.psl.eu/
  - type: APIReference
    url: https://catalogue.bib.ens.psl.eu/api/v1/.html
  - type: x-oai-pmh
    url: https://catalogue.bib.ens.psl.eu/cgi-bin/koha/oai.pl?verb=Identify
  - type: Documentation
    url: https://bib.ens.psl.eu/
  - type: Conformance
    url: conformance/ens-paris-conformance.yml
- aid: ens-paris:hal-ens
  name: HAL-ENS Open Archive — ENS-PARIS collection
  x-operator: tenant
  description: 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.
  humanURL: https://hal-ens.archives-ouvertes.fr/
  baseURL: https://api.archives-ouvertes.fr/search/ENS-PARIS/
  tags:
  - Research
  - Open Access
  - Institutional Repository
  - OAI-PMH
  - HAL
  properties:
  - type: ResearchRepository
    url: https://hal-ens.archives-ouvertes.fr/
  - type: x-oai-pmh
    url: https://api.archives-ouvertes.fr/oai/hal/?verb=ListIdentifiers&metadataPrefix=oai_dc&set=collection:ENS-PARIS
  - type: Documentation
    url: https://api.archives-ouvertes.fr/docs/oai
  - type: APIReference
    url: https://api.hal.science/docs/
  - type: Conformance
    url: conformance/ens-paris-conformance.yml
common:
- type: Website
  url: https://www.ens.psl.eu/en
- type: LinkedIn
  url: https://www.linkedin.com/school/ecole-normale-superieure/
- type: TermsOfService
  url: https://www.ens.psl.eu/mentions-legales
- type: BlogRSS
  url: https://www.ens.psl.eu/en/rss.xml
- type: IdentityFederation
  url: https://federation.ens.psl.eu/idp/shibboleth
- type: LibraryCatalog
  url: https://catalogue.bib.ens.psl.eu/
- type: ResearchRepository
  url: https://hal-ens.archives-ouvertes.fr/
- type: Conformance
  url: conformance/ens-paris-conformance.yml
- type: Authentication
  url: authentication/ens-paris-authentication.yml
- type: DomainSecurity
  url: security/ens-paris-domain-security.yml
- type: Plans
  url: plans/ens-paris-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ens-paris-rate-limits.yml
- type: FinOps
  url: finops/ens-paris-finops.yml
- type: Review
  url: review.yml
- type: x-vocabulary
  url: vocabulary/ens-paris-vocabulary.yml
- type: x-json-ld-context
  url: json-ld/ens-paris-context.jsonld
- type: x-blogs
  url: blogs/blogs.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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