generated: '2026-09-13'
method: searched
source: >-
  https://github.com/PublicisSapient/knowhow-api/releases, https://hub.docker.com/r/psknowhow/knowhow-api,
  https://registry.npmjs.org (@psnext, @publicissapient scopes) and probes of publicisgroupe.com
  and publicissapient.com, 2026-09-13
name: Publicis Groupe — API lifecycle posture
versioning:
  scheme: semver
  surface: KnowHOW suite (knowhow-api and its sibling services)
  current: 17.1.7
  policy_published: false
  note: >-
    Versions are visible as GitHub release tags and container tags. No written versioning
    policy — no statement about what constitutes a breaking change, how long a major line
    is supported, or how an upgrade is sequenced — is published anywhere on a Groupe host.
deprecation:
  policy_published: false
  sunset_header: not documented
  deprecation_header: not documented
  rfc8594: false
  deprecated_operations: >-
    Not determinable — no OpenAPI was captured, because the KnowHOW spec is generated at
    runtime on a self-hosted deployment and no public instance exists to read it from.
  note: >-
    No Deprecation pointer is emitted. The one deprecation-shaped fact observable on a
    public surface is the Block SDK's own migration note, which records that register()
    became asynchronous and can now throw after version 0.0.10 — a breaking change
    documented in a README rather than by any policy.
status_page:
  published: false
  probed:
  - url: https://www.publicisgroupe.com/.well-known/api-catalog
    status: 404
  note: >-
    No status.publicisgroupe.com, status.publicissapient.com or equivalent status page was
    found, and none is expected: the Groupe operates no hosted API for third parties. No
    StatusPage pointer is emitted.
sla:
  published: false
support:
  channel: https://www.publicissapient.com/contact
  developer_support: >-
    None specific to developers. KnowHOW questions route to the Confluence wiki at
    knowhow.suite.publicissapient.com; knowhow-mcp ships an operator-configured support
    email rather than a public one.
distribution_decay:
  - artifact: psknowhow/knowhow-api container
    latest_published: 17.0.0 (2026-05-07)
    source_latest: 17.1.7 (2026-08-31)
    gap: seven patch releases, about four months
  - artifact: '@psnext/block-sdk documented CDN pin'
    latest_published: 0.0.25 (pinned in the SDK README)
    source_latest: 0.0.32 (2025-11-03 on npm)
    gap: seven patch versions
  - artifact: '@publicissapient eslint/styleguide packages'
    latest_published: '2020-01-13'
    gap: unmaintained for over six years