Landgate Site API

openapi: 3.2.0
info:
  title: Data WA CKAN Action API (operated by Landgate) Site API
  version: '3'
  summary: OpenAPI description of the anonymously callable CKAN Action API behind data.wa.gov.au, the WA whole-of-government open data catalogue Landgate operates.
  description: 'Landgate leads implementation of the WA Whole of Government Open Data Policy and operates

    data.wa.gov.au. Its catalogue runs CKAN, whose standard `/api/3/action/*` surface is

    exposed anonymously. CKAN publishes no OpenAPI, so this is an API Evangelist GENERATED

    description of the actions that this specific deployment answers.


    Every operation below was probed live on 2026-07-26 and returned HTTP 200 with

    `"success": true` and no credential (see `x-evidence`). Only actions that were actually

    exercised are described — the CKAN action surface is larger, and `helpShow` is the

    server''s own machine-readable parameter reference for any action.


    Scale observed on 2026-07-26: 2,872 datasets in the catalogue, 395 published by the

    `landgate` organization. Licensing is mixed and should not be assumed open — 371 of the

    395 Landgate datasets carry `license_id: custom_other`.

    '
  contact:
    name: Landgate Customer Service
    url: https://www.landgate.wa.gov.au/help-centre/
  license:
    name: Per-dataset; see each package's license_id
    url: https://catalogue.data.wa.gov.au/api/3/action/license_list
servers:
- url: https://catalogue.data.wa.gov.au
  description: Data WA CKAN catalogue
tags:
- name: Site
  description: Catalogue-level status and reference lists
paths:
  /api/3/action/status_show:
    get:
      operationId: ckanStatusShow
      tags:
      - Site
      summary: Get catalogue status
      description: Returns the CKAN version, site title/url and the installed extension list.
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/status_show
        status: 200
        probed: '2026-07-26'
      responses:
        '200':
          description: Status envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
  /api/3/action/tag_list:
    get:
      operationId: ckanTagList
      tags:
      - Site
      summary: List tags
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/tag_list?limit=5
        status: 200
        probed: '2026-07-26'
      parameters:
      - name: query
        in: query
        schema:
          type: string
      - name: limit
        in: query
        schema:
          type: integer
      responses:
        '200':
          description: Envelope whose result is an array of tag names
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
  /api/3/action/license_list:
    get:
      operationId: ckanLicenseList
      tags:
      - Site
      summary: List the licences the catalogue recognises
      description: Useful for interpreting `license_id` on Landgate datasets — most are `custom_other` (a Landgate licence), not an open licence.
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/license_list
        status: 200
        probed: '2026-07-26'
      responses:
        '200':
          description: Envelope whose result is an array of licence objects
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
  /api/3/action/vocabulary_list:
    get:
      operationId: ckanVocabularyList
      tags:
      - Site
      summary: List controlled vocabularies
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/vocabulary_list
        status: 200
        probed: '2026-07-26'
      responses:
        '200':
          description: Envelope whose result is an array of vocabularies
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
  /api/3/action/help_show:
    get:
      operationId: ckanHelpShow
      tags:
      - Site
      summary: Get the docstring (parameter reference) for any action
      description: CKAN's own machine-readable parameter reference. Every envelope returned by this API carries a `help` URL pointing back at this action.
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/help_show?name=package_search
        status: 200
        probed: '2026-07-26'
      parameters:
      - name: name
        in: query
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Envelope whose result is the action docstring
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
components:
  schemas:
    Envelope:
      type: object
      description: Standard CKAN response envelope.
      required:
      - help
      - success
      properties:
        help:
          type: string
          format: uri
        success:
          type: boolean
        result: {}
x-generated-by: API Evangelist enrichment pipeline
x-generated: '2026-07-26'
x-method: generated
x-source: live probes of https://catalogue.data.wa.gov.au/api/3/action
x-authentication: none for read actions (write actions require a CKAN API key not issued publicly)