generated: '2026-09-04'
method: searched
source: >-
  https://docs.brickschema.org/lifecycle/versioning.html (HTTP 200) ;
  https://github.com/BrickSchema/Brick/blob/master/RELEASE.md ;
  https://github.com/BrickSchema/Brick/releases ; live probes 2026-09-04
versioning:
  scheme: semver
  current: 1.4.4
  namespace_policy: >-
    "Since v1.2, all versions of the Brick ontology have the same namespace:
    https://brickschema.org/schema/Brick#" — the namespace is deliberately unversioned so a model can
    be upgraded by loading a newer graph rather than rewriting every entity IRI.
  version_signal: >-
    Version is carried by the IRI of the IMPORTED graph, not the namespace: a model declares
    owl:imports <https://brickschema.org/schema/1.4/Brick> to pin the ontology release it was authored
    against.
  api_versioning: >-
    The Brick Example Server contract versions in the path — every operation sits under /brickapi/v1/.
deprecation:
  policy_published: false
  in_graph_signal:
    property: brick:isReplacedBy
    label: Is replaced by
    note: >-
      The ontology carries its own machine-readable succession pointer — a retired or renamed term is
      linked to its successor with brick:isReplacedBy — and every release ships a generated list of
      REMOVED classes. That is the closest thing Brick publishes to a deprecation signal.
  gap: >-
    docs.brickschema.org/lifecycle/versioning.html is silent on backwards-compatibility guarantees,
    class deprecation procedure, support windows and what a major/minor/patch bump means. There is no
    Sunset or Deprecation HTTP header surface, because Brick operates no hosted API. Verified
    2026-09-04.
sla:
  published: false
  note: No SLA is published; Brick is a BSD-3-Clause community standard with no hosted service.
status_page:
  published: false
  note: >-
    No status page exists on any Brick host. Probed 2026-09-04 — status.brickschema.org does not
    resolve and no status link appears on brickschema.org or docs.brickschema.org.
retired_surfaces:
  - name: Brick Reconciliation Service
    url: https://reconciliation.brickschema.org/reconcile
    advertised_at: https://github.com/BrickSchema/reconciliation-api/blob/master/README.md
    state: dead
    probed: '2026-09-04'
    evidence: >-
      TLS certificate verification fails — "certificate has expired". With verification disabled the
      endpoint returns HTTP 404. The README still tells OpenRefine users to paste this URL in as a
      standard reconciliation service. Source repository last committed 2021-10-11.
  - name: roadmap.brickschema.org
    url: http://roadmap.brickschema.org/
    state: dead
    probed: '2026-09-04'
    evidence: >-
      Redirects to https://github.com/orgs/BrickSchema/projects/1, which returns HTTP 404 to an
      unauthenticated client. The v1.2.0 changelog still cites it as the Brick development roadmap.
      No Roadmap pointer is emitted for this record as a result.
deprecated_operations: []
deprecated_operations_note: >-
  No operation in openapi/brick-brick-server-openapi.yml carries deprecated: true.
maintainers:
  - FN: Kin Lane
    email: info@apievangelist.com