generated: '2026-07-23'
method: searched
source: https://developer.nationwide.co.uk/open-banking
notes: >-
  Nationwide tracks the UK Open Banking (OBIE) standard release train. The
  Read/Write APIs are uplifting from v3.1 to v4.0, with v3 endpoints scheduled
  for retirement from early 2026 per the developer-portal roadmap.
versioning:
  scheme: uri-path
  open_data:
    current: v2.2 (live Nationwide host)
    spec: OBIE Open Data v2.3 / v2.4
  read_write:
    current: v3.1
    next: v4.0
  docs: https://developer.nationwide.co.uk/open-banking
deprecation:
  policy: OBIE standard release train; v3.1 Read/Write endpoints retiring toward v4.0.
  v3_retirement: early 2026
  sunset_header: unknown
  policy_url: https://developer.nationwide.co.uk/open-banking/support/known-issues
status_page: https://developer.nationwide.co.uk/open-banking/support/known-issues
roadmap: https://developer.nationwide.co.uk/open-banking
sla:
  note: >-
    Availability and performance are reported to the FCA/OBIE under the CMA Order;
    no separate public SLA document was located.
deprecated_operations: []