# DFN-AAI Identity Federation — University of Bonn Shibboleth IdP

**Canonical:** https://apis.io/apis/university-of-bonn/dfn-aai-idp/  
**Provider:** University of Bonn — https://apis.io/providers/university-of-bonn/  
**Base URL:** https://shibboleth.uni-bonn.de/idp/shibboleth  
**Documentation:** https://www.aai.dfn.de/

DFN-AAI Identity Federation — University of Bonn Shibboleth IdP is one of 12 APIs that [University of Bonn](https://apis.io/providers/university-of-bonn/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Identity Federation, Shibboleth, SAML, DFN-AAI, and Single Sign-On. The published artifact set on APIs.io includes API documentation.

The University of Bonn operates its own SAML 2.0 / Shibboleth Identity Provider and publishes signed metadata from its own host — https://shibboleth.uni-bonn.de/idp/shibboleth returned 200 application/xml, 12,145 bytes, on 2026-09-01, entityID https://shibboleth.uni-bonn.de/idp/shibboleth, OrganizationName "Rheinische Friedrich-Wilhelms-Universitaet Bonn". The same entity is registered in DFN-AAI, the German national research-and-education identity federation: the 112,936,662-byte aggregate at https://mdq.aai.dfn.de/entities/ carries 11,457 EntityDescriptors and exactly ONE uni-bonn.de entity — this IdP — with registrationAuthority https://www.aai.dfn.de, mdui:DisplayName "Universitaet Bonn", shibmd:Scope uni-bonn.de, entity attributes DFN-AAI-IdP and http://aai.dfn.de/category/idm.nrw-member, and a valid XML signature. Per-entity MDQ lookup answers 200 application/samlmetadata+xml. SSO is bound over HTTP-POST, HTTP-POST-SimpleSign and HTTP-Redirect; SLO adds SOAP; an ArtifactResolutionService runs on port 8443. This is the strongest institution-operated machine-readable surface Bonn has and it was absent from the June 2026 profile.

## Machine-readable artifacts (3)

- **BaseURL** — https://shibboleth.uni-bonn.de/idp/shibboleth
- **Documentation** — https://doku.tid.dfn.de/de:aai:start
- **Metadata** — https://mdq.aai.dfn.de/entities/https%3A%2F%2Fshibboleth.uni-bonn.de%2Fidp%2Fshibboleth

## Other University of Bonn APIs (11)

- [bonndata OAI-PMH Metadata Endpoint](https://apis.io/apis/university-of-bonn/bonndata-oai-pmh/)
- [University of Bonn Datasets API](https://apis.io/apis/university-of-bonn/university-of-bonn-datasets-api/)
- [University of Bonn Info API](https://apis.io/apis/university-of-bonn/university-of-bonn-info-api/)
- [University of Bonn Metrics API](https://apis.io/apis/university-of-bonn/university-of-bonn-metrics-api/)
- [University of Bonn Search API](https://apis.io/apis/university-of-bonn/university-of-bonn-search-api/)
- [bonndoc Publication Server OAI-PMH Endpoint](https://apis.io/apis/university-of-bonn/bonndoc-oai-pmh/)
- [bonndoc DSpace REST API (bot-challenged)](https://apis.io/apis/university-of-bonn/bonndoc-dspace-rest/)
- [University of Bonn GitLab REST API v4](https://apis.io/apis/university-of-bonn/gitlab-api/)
- [DataCite Membership — University of Bonn (BXBQ)](https://apis.io/apis/university-of-bonn/datacite-member/)
- [ROR Registry Record — University of Bonn](https://apis.io/apis/university-of-bonn/ror-record/)
- [re3data Registry Record — bonndata](https://apis.io/apis/university-of-bonn/re3data-record/)

## Tags

Identity Federation, Shibboleth, SAML, DFN-AAI, 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-bonn/dfn-aai-idp/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/university-of-bonn/.