specification: API Commons Plans
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/Plans
provider: Tsinghua University
providerId: tsinghua
created: '2026-06-03'
modified: '2026-08-19'
reconciled: false
tags:
- Education
- Higher Education
- University
- Plans
description: 'Tsinghua University is a non-commercial public higher-education institution; nothing it
  exposes is sold as a product. The three publicly reachable machine-readable surfaces verified on 2026-08-19
  — the TUNA mirror''s sync-status and installable-image documents, and the Shibboleth IdP''s SAML 2.0
  federation metadata — are free, unauthenticated, and carry no plan, quota, signup or terms of use of
  any kind. Everything else the university runs is not priced but gated: access is granted by institutional
  affiliation through id.tsinghua.edu.cn, not by purchase. No developer portal, no API key issuance and
  no commercial API terms were found.'
notes: Corrected 2026-08-19. The June 2026 version of this file described free "library, repository, course,
  and open-metadata interfaces"; no such public interfaces were found on any Tsinghua host in a full probe
  pass. "Free / Open" here means exactly three unauthenticated endpoints; "Affiliation / Credentialed"
  means campus SSO, which is not a plan tier.
sources:
- https://raw.githubusercontent.com/api-evangelist/tsinghua/refs/heads/main/apis.yml
- https://raw.githubusercontent.com/api-evangelist/tsinghua/refs/heads/main/authentication/tsinghua-authentication.yml
plans:
- id: tsinghua-free-open
  name: Free / Open
  type: free
  description: Public open APIs (metadata, library, repository, course data) offered at no charge, generally
    for non-commercial use.
  entries:
  - label: Open API Access
    name: open_api_access
    type: free
    metric: requests
    limit: -1
    timeFrame: usage
    geo: global
    unit: 1
    price: '0.00'
    userMultiplied: false
- id: tsinghua-affiliation
  name: Affiliation / Credentialed
  type: free
  description: Administrative and identity APIs gated behind institutional SSO, client certificates, or
    federation membership rather than payment.
  entries:
  - label: Credentialed Access
    name: credentialed_access
    type: free
    metric: requests
    limit: -1
    timeFrame: usage
    geo: global
    unit: 1
    price: '0.00'
    userMultiplied: false
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
generated: '2026-08-19'
method: probed