Landgate Discovery API

openapi: 3.2.0
info:
  title: Data WA CKAN Action API (operated by Landgate) Discovery 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: Discovery
  description: Autocomplete, resource search and the DCAT catalog
paths:
  /api/3/action/resource_search:
    get:
      operationId: ckanResourceSearch
      tags:
      - Discovery
      summary: Search resources (distributions) directly
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/resource_search?query=name:cadastre
        status: 200
        probed: '2026-07-26'
      parameters:
      - name: query
        in: query
        required: true
        description: Field-scoped query, e.g. `name:cadastre`.
        schema:
          type: string
      - name: limit
        in: query
        schema:
          type: integer
      - name: offset
        in: query
        schema:
          type: integer
      responses:
        '200':
          description: Envelope whose result has count and results[]
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
  /api/3/action/package_autocomplete:
    get:
      operationId: ckanPackageAutocomplete
      tags:
      - Discovery
      summary: Autocomplete dataset titles
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/package_autocomplete?q=land&limit=3
        status: 200
        probed: '2026-07-26'
      parameters:
      - name: q
        in: query
        required: true
        schema:
          type: string
      - name: limit
        in: query
        schema:
          type: integer
      responses:
        '200':
          description: Envelope whose result is an array of matches
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
  /api/3/action/format_autocomplete:
    get:
      operationId: ckanFormatAutocomplete
      tags:
      - Discovery
      summary: Autocomplete resource formats
      x-evidence:
        url: https://catalogue.data.wa.gov.au/api/3/action/format_autocomplete?q=csv
        status: 200
        probed: '2026-07-26'
      parameters:
      - name: q
        in: query
        required: true
        schema:
          type: string
      - name: limit
        in: query
        schema:
          type: integer
      responses:
        '200':
          description: Envelope whose result is an array of formats
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Envelope'
  /catalog.jsonld:
    get:
      operationId: getDataWaDcatCatalog
      tags:
      - Discovery
      summary: Get the DCAT catalog as JSON-LD
      x-evidence:
        url: https://catalogue.data.wa.gov.au/catalog.jsonld
        status: 200
        content_type: application/ld+json
        probed: '2026-07-26'
      responses:
        '200':
          description: DCAT catalog
          content:
            application/ld+json:
              schema:
                type: array
                items:
                  type: object
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)