generated: '2026-09-12'
method: searched
source: >-
  Searched gbrx.com and every Greenbrier product host for a status page, changelog, versioning
  policy, deprecation policy and SLA on 2026-09-12; derived the versioning facts from the live
  contracts.
note: >-
  This is an honest set of absences. Greenbrier operates real public APIs without any of the
  operational scaffolding an API program normally carries, because it does not consider them an API
  program. A consumer of the gauge-table API in particular is depending on an unversioned,
  unannounced, unmonitored endpoint.
status_page:
  published: false
  url: null
  evidence: >-
    No status.gbrx.com and no status page linked from www.gbrx.com, tankcar.gbrx.com or the My GBRX
    hub. Probed 2026-09-12.
changelog:
  published: false
  url: null
  evidence: >-
    No dated API changelog anywhere on the estate. The nearest dated artifact is the press room
    (245 posts) and the Informational Bulletins page, neither of which covers the API surfaces.
deprecation_policy:
  published: false
  sunset_header: false
  deprecation_header: false
  evidence: >-
    No RFC 8594 Sunset or Deprecation header was returned by any observed response on
    www.gbrx.com/wp-json or tankcar.gbrx.com, and no policy page exists.
sla:
  published: false
  evidence: No SLA, uptime commitment or support tier is published for any API surface.
terms:
  published: true
  url: https://www.gbrx.com/legal/
  note: >-
    Corporate website Terms of Use. It governs use of the site; there is no separate API terms
    document and no published API acceptable-use policy.
versioning:
  - api: Greenbrier Railcar Catalog API
    scheme: path-namespace
    current: wp/v2
    stability: >-
      The namespace is stable and the route index at https://www.gbrx.com/wp-json/ is authoritative.
      The `railcars` post type and its taxonomies are site-specific and could be renamed by a theme
      change without notice.
  - api: Greenbrier Aftermarket Parts Store API
    scheme: path-namespace
    current: wc/store/v1
    stability: Versioned by the WooCommerce Store API contract; wc/store/v1 and wc/v2/v3 are served side by side.
  - api: Greenbrier Press Room API
    scheme: path-namespace
    current: wp/v2
  - api: Greenbrier Site Content and Discovery API
    scheme: path-namespace
    current: wp/v2 (+ oembed/1.0)
  - api: Greenbrier Tank Car Gauge Table API
    scheme: none
    current: unversioned
    stability: >-
      No version segment, no version header, no announced release. The AngularJS client that calls
      it pins jQuery 1.12.4 and AngularJS 1.5.6, and the gauge table returned for GBRX 700000 is
      dated 2012-03-22 - this is a long-lived, low-change service, but its stability is a fact about
      its neglect rather than a commitment.
deprecated_operations: []
observed_decay:
  - detail: >-
      The gauge-table front end loads https://cdn.polyfill.io/v1/polyfill.min.js. The polyfill.io
      domain was sold and began serving malicious payloads in 2024 and has since been sinkholed by
      Namecheap/Cloudflare. This is a browser-side supply-chain reference on a live Greenbrier
      public host, not an API defect, but it is the clearest dating signal on the surface.
      Observed in the page source at https://tankcar.gbrx.com/ on 2026-09-12.
  - detail: >-
      grsecomm.gbrx.com serves jQuery 1.7.2 (released 2012) and jQuery UI 1.10.0 on its login page.