École Normale Supérieure de Lyon

ENS de Lyon CAS single sign-on (Apereo CAS 3.0 protocol)

Apereo CAS service running on ENS de Lyon's own host cas.ens-lyon.fr (140.77.51.3). The CAS 3.0 validation endpoint /cas/p3/serviceValidate answers unauthenticated with a well-formed cas:serviceResponse document, so the protocol surface is real and probeable even though every ticket-granting operation requires an ENS de Lyon account. There is no third-party client registration and no published integration guide.

GitHub

Documentation

📖
Authentication
https://raw.githubusercontent.com/api-evangelist/ens-lyon/refs/heads/main/authentication/ens-lyon-authentication.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/cas-sso"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑ 
aid: ens-lyon:cas-sso
name: ENS de Lyon CAS single sign-on (Apereo CAS 3.0 protocol)
x-operator: institution
description: Apereo CAS service running on ENS de Lyon's own host cas.ens-lyon.fr (140.77.51.3). The CAS
  3.0 validation endpoint /cas/p3/serviceValidate answers unauthenticated with a well-formed cas:serviceResponse
  document, so the protocol surface is real and probeable even though every ticket-granting operation
  requires an ENS de Lyon account. There is no third-party client registration and no published integration
  guide.
humanURL: https://cas.ens-lyon.fr/cas/login
baseURL: https://cas.ens-lyon.fr/cas/
tags:
- Identity
- Single Sign-On
- CAS
- Authentication
properties:
- type: Authentication
  url: authentication/ens-lyon-authentication.yml