# Universidade de Lisboa SAML 2.0 Identity Provider (RCTSaai / eduGAIN)

**Canonical:** https://apis.io/apis/university-of-lisbon/identity-federation-ulisboa/  
**Provider:** University of Lisbon — https://apis.io/providers/university-of-lisbon/  
**Base URL:** https://id.ulisboa.pt/nidp/saml2/metadata  
**Documentation:** https://technical.edugain.org/

Universidade de Lisboa SAML 2.0 Identity Provider (RCTSaai / eduGAIN) is one of 11 APIs that [University of Lisbon](https://apis.io/providers/university-of-lisbon/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Identity Federation, SAML, eduGAIN, RCTSaai, and Single Sign-On. The published artifact set on APIs.io includes authentication docs.

The institution's central SAML 2.0 identity provider, published into the Portuguese national identity federation RCTSaai (operated by FCCN) and onward to eduGAIN. Live machine-readable metadata: IDPSSODescriptor, SPSSODescriptor and AttributeAuthorityDescriptor; HTTP-POST and HTTP-Redirect SSO bindings; persistent and transient NameID formats. Runs on NetIQ Access Manager, not Shibboleth — the /idp/shibboleth path on idp.ulisboa.pt returns a Tomcat 404 — so `saml` is claimed and `shibboleth` is not. This is the strongest institution-operated machine-readable surface in the profile and it was missing from the June 2026 pass entirely.

## Machine-readable artifacts (2)

- **IdentityFederation** — https://id.ulisboa.pt/nidp/saml2/metadata
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/university-of-lisbon/refs/heads/main/authentication/university-of-lisbon-authentication.yml

## Other University of Lisbon APIs (10)

- [FenixEdu Academic API (Instituto Superior Tecnico)](https://apis.io/apis/university-of-lisbon/fenixedu-tecnico/)
- [Repositorio da Universidade de Lisboa — OAI-PMH](https://apis.io/apis/university-of-lisbon/repositorio-oai-pmh/)
- [Repositorio da Universidade de Lisboa — DSpace REST API](https://apis.io/apis/university-of-lisbon/repositorio-dspace-rest/)
- [Catalogo Coletivo ULisboa (Koha) — OAI-PMH](https://apis.io/apis/university-of-lisbon/catalogo-bibliotecas-oai-pmh/)
- [Instituto Superior Tecnico SAML 2.0 Identity Provider (RCTSaai / eduGAIN)](https://apis.io/apis/university-of-lisbon/identity-federation-tecnico/)
- [ULisboa Research Portal — Elsevier Pure tenancy](https://apis.io/apis/university-of-lisbon/researchportal-pure/)
- [Erasmus Without Paper node (HEI ulisboa.pt)](https://apis.io/apis/university-of-lisbon/ewp-node/)
- [DataCite repository membership (QWBT.ULISBOA)](https://apis.io/apis/university-of-lisbon/datacite-membership/)
- [ROR organization identifier](https://apis.io/apis/university-of-lisbon/ror-registration/)
- [Crossref memberships (organic units)](https://apis.io/apis/university-of-lisbon/crossref-membership/)

## Tags

Identity Federation, SAML, eduGAIN, RCTSaai, Single Sign-On, Metadata

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/university-of-lisbon/identity-federation-ulisboa/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/university-of-lisbon/.