generated: '2026-07-27'
method: searched
source: >-
  https://connecteddata.nationalgrid.co.uk/api-guidance,
  /api/3/action/status_show, and live probes on 2026-07-27
versioning:
  scheme: uri-path
  current: '3'
  base: https://connecteddata.nationalgrid.co.uk/api/3/action/
  platform: CKAN
  platform_version: 2.9.8
  platform_source: /api/3/action/status_show
  extensions_enabled: [dcat, wpd_dcat, restricted_api, wpd_restricted_api, datastore, datapusher]
  policy_url: null
  note: >-
    The API version is CKAN's own major version namespace, not an NGED-authored
    contract version. NGED publishes no versioning policy, and the platform
    version it runs (2.9.8, released by the CKAN project in 2023) is behind
    upstream — a supply-chain fact consumers should know, not a deprecation.
deprecation:
  policy_url: null
  sunset_header: false
  deprecation_header: false
  advance_notice: not published
  note: >-
    No deprecation policy, no RFC 8594 Sunset/Deprecation header support, and no
    published change window. Dataset-level retirement is signalled only through
    the per-dataset "expirationdate" field in the catalogue metadata. No
    `Deprecation` pointer is wired because no policy exists.
sla:
  url: null
  uptime_target: not published
  support_channel: nged.data@nationalgrid.co.uk
  support_url: https://connecteddata.nationalgrid.co.uk/contact
status_page: null
status_page_probe:
  probes:
  - url: https://status.nationalgrid.co.uk/
    result: NXDOMAIN
  note: >-
    No status page exists for the data portal on any NGED host. Live network
    status is published for a different purpose entirely —
    powercuts.nationalgrid.co.uk is the electricity supply status map, not an API
    status page. No `StatusPage` pointer is wired.
change_communication:
  changelog_url: null
  probes:
  - {path: /changelog, status: 404}
  - {path: /news, status: 404}
  mechanism: >-
    Per-dataset email subscription — a registered user subscribes to a dataset
    and is notified within 15 minutes of an update. This is the only change
    signal NGED offers, and it is per-dataset rather than per-API.
  docs: https://connecteddata.nationalgrid.co.uk/registration-and-subscription
data_freshness:
  field: updatefrequency
  observed_values:
    Not Applicable: 38
    12 Months: 27
    Near Real Time: 15
    1 Month: 12
  note: >-
    Freshness is declared per dataset rather than per API. Fifteen datasets are
    "Near Real Time" — the live power-cut feed and the live primary substation
    measurements for East Midlands, West Midlands and South Wales.
catalogue_drift:
  measured: '2026-07-27'
  datasets: 92
  resources: 8691
  previous_measurement: {date: '2026-07-27', datasets: 91, resources: 8687}
  note: >-
    The catalogue grew by one dataset and four resources between the review probe
    and this enrichment probe on the same day. The catalogue is live and
    continuously edited; any count captured here is a snapshot.
deprecated_operations: []