specification: API Commons Plans
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/Plans
provider: Carnegie Mellon University
providerId: carnegie-mellon-university
created: '2026-06-03'
modified: '2026-08-19'
reconciled: true
generated: '2026-08-19'
method: probed
source: >-
  Live probes of every CMU-operated surface on 2026-08-19, plus
  authentication/carnegie-mellon-university-authentication.yml.
x-operator: institution
tags:
- Education
- Higher Education
- University
- Plans
description: >-
  Carnegie Mellon University is a non-commercial higher-education institution and sells no API
  access. All three surfaces it operates are free and require no registration of any kind: the Delphi
  Epidata API, the CERT/CC Vulnerability Notes API and the Library Publishing Service API were each
  probed anonymously on 2026-08-19 and returned real payloads with no key, token or account. There is
  no signup, no plan page, no quota and no upgrade path, because there is no product. The only
  credentialed access boundary CMU operates is SAML attribute release through Web Login, which gates
  affiliation-scoped services rather than metering an API. Corrected 2026-08-19: the previous version
  described access "typically for non-commercial use", which was figshare's licensing posture read
  onto CMU — none of CMU's own surfaces states a non-commercial restriction.
notes: >-
  No pricing exists to record. "Free / Open" is literal — anonymous and unmetered.
  "Affiliation / Credentialed" is SAML-gated institutional access, not a paid tier.
sources:
- https://raw.githubusercontent.com/api-evangelist/carnegie-mellon-university/refs/heads/main/apis.yml
plans:
- id: carnegie-mellon-university-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: carnegie-mellon-university-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