--- name: Sungkyunkwan University description: Sungkyunkwan University public developer/API footprint review for APIs.json cataloging. url: https://raw.githubusercontent.com/api-evangelist/skku/refs/heads/main/review.yml created: '2026-06-03' modified: '2026-09-01' reviews: - date: '2026-09-01' rating: 2 summary: >- Re-profiled under the API Evangelist university pipeline, which settles WHO OPERATES each surface before saving anything. The June 2026 review was right that SKKU publishes no public developer API; it missed two real surfaces and mis-shelved a third. FOUND: Sungkyunkwan University operates a SAML 2.0 identity provider — entityID https://kafe.skku.edu/idp/simplesamlphp, on its own registrable domain, registered in eduGAIN by KAFE (the Korea Access Federation) on 2022-09-26, scope skku.edu, supporting the REFEDS Research and Scholarship entity category and asserting the REFEDS Sirtfi assurance profile. Its metadata is public and machine-readable through the federation aggregate, and the advertised SSO endpoint answers live. That is the strongest programmable surface SKKU runs and it was entirely absent from the previous profile. ALSO FOUND: a conformant OAI-PMH 2.0 provider at pure.skku.edu/ws/oai serving six metadata prefixes with the OpenAIRE CERIF 1.2 profile — recorded as an Elsevier Pure TENANCY, not as SKKU engineering, because pure.skku.edu CNAMEs to skku.elsevierpure.com and the provider self-identifies as "Pure OAI Repository" with adminEmail purehosted@elsevier.com. Two SKKU units are Crossref members with their own DOI prefixes and the institution holds ROR 04q78tk20; no DataCite provider or client exists. CORRECTED: the previous profile carried github.com/GDG-SKKU as SKKU's GitHub organization — it is a Google Developer Group student chapter, not institutional engineering, and the pointer has been removed rather than re-credited; the LinkedIn pointer has been repaired to the canonical school page. Every consumable system remains enrolment-gated (Kingo Portal, iCampus, sugang.skku.edu, the library discovery layer), and no specification is saved in this repository for any surface, because SKKU operates no contract of its own and every contract that touches it belongs to a vendor. endpoints: - url: https://technical.edugain.org/api.php?action=show_entity&entityid=https%3A%2F%2Fkafe.skku.edu%2Fidp%2Fsimplesamlphp status: 200 note: SAML 2.0 EntityDescriptor for SKKU's own IdP, 9,390 bytes. INSTITUTION-OPERATED. - url: https://kafe.skku.edu/simplesaml/saml2/idp/SSOService.php status: 400 note: >- Live SimpleSAMLphp SSO endpoint — "No SAML request provided". 400 is correct for a request carrying no SAMLRequest; the endpoint is confirmed functioning, not dead. - url: https://pure.skku.edu/ws/oai?verb=Identify status: 200 note: OAI-PMH 2.0, repositoryName "Pure OAI Repository", adminEmail purehosted@elsevier.com. TENANT. - url: https://pure.skku.edu/ws/api/524/ status: 401 note: Elsevier Pure Web Service requires an API key; no third-party issuance path found. - url: https://api.crossref.org/members?query=sungkyunkwan status: 200 note: Members 9930 (prefix 10.23838) and 6576 (prefix 10.17008). REGISTRY. - url: https://api.ror.org/organizations?query=Sungkyunkwan status: 200 note: ROR 04q78tk20, domains ["skku.edu"]. REGISTRY. - url: https://api.datacite.org/providers?query=sungkyunkwan status: 200 note: Negative probe. meta.total 0 — no DataCite membership. - url: https://skku.dcollection.net/robots.txt status: 200 note: '"User-agent: * / Disallow: /". OAI paths return the HTML shell, not OAI-PMH. TENANT, not a surface.' - url: https://chatgpt.skku.edu/chatgpt/index.do status: 200 note: Institution-operated AI guidance portal, Korean surface only. - url: https://api.skku.edu/ status: 000 note: Negative probe. No API gateway. developer./data./status./hpc.skku.edu also do not resolve. - url: https://www.skku.edu/llms.txt status: 404 note: Negative probe. No llms.txt; .well-known/security.txt and openid-configuration also 404. - url: https://api.github.com/orgs/skku status: 200 note: Org exists with 0 repositories and no metadata. Not an institutional GitHub presence. - date: '2026-06-03' rating: 1 summary: >- Web research confirmed Sungkyunkwan University (SKKU) has no public, documented developer API or open-data portal. The university operates the Kingo Portal single sign-on environment and KINGO-M mobile app, but these are gated to enrolled students, faculty, and staff with no public authentication API, developer registration, or rate-limit documentation. There is no central institutional GitHub organization; public code lives in research-lab and student developer-community orgs (e.g. GDG-SKKU). The official website, English site, and library site all resolve. The LinkedIn company URL is the canonical page (returns 404 to bots but is valid in a browser). No endpoints were fabricated; only verified URLs are recorded. endpoints: - url: https://www.skku.edu/eng/ status: 200 note: Official English website, resolves. - url: https://eng.skku.edu/ status: 200 note: Alternate English domain, resolves. - url: https://lib.skku.edu/ status: 200 note: University library site; no public API documentation found. - url: https://www.skku.edu/eng/CampusLife/ITServices/KingoPortal1_1.do status: 200 note: Kingo Portal SSO info page; gated, no developer API docs. - url: https://github.com/GDG-SKKU status: 200 note: Google Developer Group on Campus SKKU org; community, not institutional API. - url: https://www.linkedin.com/company/sungkyunkwan-university status: 404 note: Canonical LinkedIn page; 404 to bots/curl, valid in browser.