openapi: 3.1.0
info:
  title: EU Open Data Portal Search Catalogs Vocabularies API
  description: The EU Open Data Portal Search API (data.europa.eu) provides REST access for discovering, searching, and querying European Union open datasets. The API follows DCAT-AP metadata standards and supports discovery of datasets from EU institutions, member state portals, and federated open data sources. No authentication required.
  version: 1.0.0
  contact:
    name: EU Open Data Portal Support
    url: https://data.europa.eu/en/contact
  license:
    name: Creative Commons Attribution 4.0
    url: https://creativecommons.org/licenses/by/4.0/
servers:
- url: https://data.europa.eu/api/hub/search
  description: EU Open Data Portal Search API
tags:
- name: Vocabularies
  description: Controlled vocabularies for DCAT-AP metadata
paths:
  /vocabularies:
    get:
      operationId: listVocabularies
      summary: List available controlled vocabularies
      description: Returns the list of DCAT-AP controlled vocabularies used for metadata classification including themes, formats, licences, and publisher types.
      tags:
      - Vocabularies
      parameters:
      - name: language
        in: query
        schema:
          type: string
      responses:
        '200':
          description: Vocabulary list returned
          content:
            application/json:
              schema:
                type: object
                properties:
                  result:
                    type: array
                    items:
                      $ref: '#/components/schemas/Vocabulary'
components:
  schemas:
    Vocabulary:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        url:
          type: string
          format: uri
externalDocs:
  description: EU Data Provider Manual
  url: https://dataeuropa.gitlab.io/data-provider-manual/