generated: '2026-07-22'
method: searched
source: https://www.hkex.com.hk/-/media/HKEX-Market/Services/Next-Generation-Post-Trade-Programme/Fini/FINI-API-User-Guide-v0,-d-,41.pdf
description: >-
  Lifecycle posture of HKEX's API surfaces. The FINI API Gateway versions
  endpoints with a URI-path suffix (…/v1) and evolves via dated revisions of
  the public API User Guide (see changelog/hkex-changelog.yml); the guide
  notes the production domain is distributed to registered participants
  rather than published. The OMD-C/OMD-D binary datafeeds are versioned
  through numbered interface-specification documents (e.g. OMD-C Binary
  Interface Specifications v1.39b, OMD-D Developers Guide v1.26). HKEX
  publishes no public API status page, SLA, or deprecation policy, and no
  Sunset/Deprecation HTTP header support is documented.
versioning:
  fini:
    scheme: uri-path
    current: v1
    docs: https://www.hkex.com.hk/Services/Platform-Services/FINI?sc_lang=en
  omd:
    scheme: versioned binary interface-specification documents
    docs: https://www.hkex.com.hk/Services/Market-Data-Services?sc_lang=en
deprecation:
  policy_url: null
  sunset_header: false
  note: No public deprecation policy documented; changes are communicated through revised user guides and participant circulars.
sla: null
status_page: null
deprecated_operations: []