UW-Madison Identity Provider (Shibboleth)
Institution-operated Shibboleth IdP at login.wisc.edu, machine-readable on two protocols and almost never catalogued for a university. https://login.wisc.edu/idp/shibboleth returns SAML 2.0 metadata (entityID https://login.wisc.edu/idp/shibboleth, shibmd:Scope wisc.edu, signing and encryption keys), and https://login.wisc.edu/.well-known/openid-configuration returns a full OIDC discovery document. This governs campus SSO and the vendor tenants — it is NOT the API gateway, which uses OAuth 2.0 client credentials and publishes no discovery document.