generated: '2026-09-04'
method: searched
source: >-
  https://developer.biogen.com/io-docs, https://developer.biogen.com/search (the portal's own search
  index), https://developer1.biogen.com/io-docs, https://www.biogen.com/llms.txt, plus negative
  probes of https://status.biogen.com (no DNS), https://biogen.statuspage.io (302 to
  atlassian.com — no Biogen page) and https://trust.biogen.com (no DNS).
versioning:
  scheme: document-versioned
  current: >-
    The CDP-Export-API/Package definition declares version "1"; the portal's reference documents are
    addressed as .../WorkerProfile and .../synapse_action_centre/Version_01. There is no URI version
    segment or version header on any published path.
  policy_url: null
  note: No written versioning policy is published outside the portal login.
deprecation:
  policy_published: false
  policy_url: null
  sunset_header: false
  deprecation_header: false
  rfc8594: false
  deprecated_operations: []
  evidence: >-
    No deprecation or sunset policy, and no RFC 8594 Sunset/Deprecation header contract, appears on
    any anonymously readable Biogen surface. No operation in any spec in openapi/ carries
    deprecated: true. NOTE — the CCS-CRX API this repo's earlier profile was built from
    (https://developer.biogen.com/docs/read/global_markets/ccs_crx/Version_1) no longer appears in
    the portal's own search index (a query for "crx" on https://developer.biogen.com/search returns
    zero results, where "worker" and "synapse" return hits), which suggests a retirement Biogen never
    announced publicly. Recorded as an observation, not as a declared deprecation.
sla:
  published: false
  url: null
status_page:
  published: false
  url: null
  evidence: >-
    status.biogen.com does not resolve; https://biogen.statuspage.io redirects (302) to
    atlassian.com/software/statuspage, i.e. no Biogen status page exists there;
    https://biogen.statuspage.io/api/v2/status.json redirects to statuspage.io. No StatusPage
    pointer is wired into apis.yml, because Biogen serves no status page.
changelog:
  published: false
  url: null
  evidence: No dated API changelog or release-notes page is reachable without a portal account.
environments:
  - name: production
    portal: https://developer.biogen.com/
    gateway: https://api.biogen.com
  - name: non-production
    portal: https://developer1.biogen.com/
    gateway: https://dev1.api.biogen.com