# GakuNin Shibboleth Identity Provider

**Canonical:** https://apis.io/apis/tohoku/gakunin-shibboleth-idp/  
**Provider:** Tohoku University — https://apis.io/providers/tohoku/  
**Base URL:** https://metadata.gakunin.nii.ac.jp/gakunin-metadata.xml  
**Documentation:** https://www.gakunin.jp/en/

GakuNin Shibboleth Identity Provider is one of 5 APIs that [Tohoku University](https://apis.io/providers/tohoku/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include SAML, Shibboleth, Identity Federation, GakuNin, and Single Sign-On. The published artifact set on APIs.io includes authentication docs.

Tohoku University's own SAML 2.0 Identity Provider, registered in GakuNin — the Japanese academic access-management federation operated by NII. entityID https://idp.auth.tohoku.ac.jp/idp/shibboleth, OrganizationName "Tohoku University / 東北大学", shibmd:Scope auth.tohoku.ac.jp, HTTP-Redirect binding for SingleSignOn and SingleLogout. Confirmed in the GakuNin aggregate metadata on 2026-09-01. A federation is shared by definition, but the IdP behind it is the institution's — this is one of the strongest institution-operated machine-readable surfaces the university has. The SSO endpoint is hosted for Tohoku by SECIOSS (slink.secioss.com), so the entity is theirs and the operation is outsourced; both facts are recorded rather than one being hidden.

## Machine-readable artifacts (2)

- **Authentication** — https://raw.githubusercontent.com/api-evangelist/tohoku/refs/heads/main/authentication/tohoku-authentication.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/tohoku/refs/heads/main/conformance/tohoku-conformance.yml

## Other Tohoku University APIs (4)

- [jMorp GraphQL API (Tohoku Medical Megabank Organization)](https://apis.io/apis/tohoku/jmorp-graphql/)
- [TOUR Institutional Repository OAI-PMH](https://apis.io/apis/tohoku/tour-oai-pmh/)
- [Crossref DOI Registration Membership](https://apis.io/apis/tohoku/crossref-membership/)
- [ROR Organization Record](https://apis.io/apis/tohoku/ror-registration/)

## Tags

SAML, Shibboleth, Identity Federation, GakuNin, Single Sign-On

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/tohoku/gakunin-shibboleth-idp/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/tohoku/.