FAO FAOSTAT Domains API

openapi: 3.2.0
info:
  title: FAOSTAT Data Domains API
  description: The Food and Agriculture Organization (FAO) of the United Nations FAOSTAT REST API provides programmatic access to the world's largest freely accessible database for food and agriculture statistics. FAOSTAT covers 180+ countries from 1961 to present across 70+ thematic domains including agricultural production, food security, trade flows, land use, environmental indicators, food balances, and prices. No authentication is required for public data access.
  version: 1.0.0
  contact:
    name: FAOSTAT Support
    email: faostat@fao.org
    url: https://www.fao.org/faostat/en/#developer-portal
  license:
    name: CC BY-NC-SA 3.0 IGO
    url: https://creativecommons.org/licenses/by-nc-sa/3.0/igo/
  termsOfService: https://www.fao.org/contact-us/terms/en/
servers:
- url: https://fenixservices.fao.org/faostat/api/v1
  description: FAOSTAT API v1 Production Server
tags:
- name: Domains
  description: Operations for browsing available FAOSTAT domains and groups
paths:
  /{lang}/groupsanddomains:
    get:
      tags:
      - Domains
      operationId: getGroupsAndDomains
      summary: List all domain groups and domains
      description: Returns the complete hierarchical list of FAOSTAT domain groups and their child domains. Each domain has a unique code used in subsequent data queries.
      parameters:
      - $ref: '#/components/parameters/lang'
      - $ref: '#/components/parameters/output_type'
      responses:
        '200':
          description: Successful response with groups and domains list
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GroupsAndDomainsResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '500':
          $ref: '#/components/responses/InternalServerError'
  /{lang}/definitions/types/domain:
    get:
      tags:
      - Domains
      operationId: getDomainList
      summary: List all available domains
      description: Returns a flat list of all FAOSTAT domains with their codes, names, and last update information.
      parameters:
      - $ref: '#/components/parameters/lang'
      responses:
        '200':
          description: Successful response with domain list
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DomainListResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '500':
          $ref: '#/components/responses/InternalServerError'
components:
  responses:
    BadRequest:
      description: Bad request — invalid parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    InternalServerError:
      description: Internal server error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
          description: Error message
        code:
          type: integer
          description: Error code
    DomainListResponse:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/Domain'
    GroupsAndDomainsResponse:
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/DomainGroup'
    Domain:
      type: object
      properties:
        Domain Code:
          type: string
          description: Unique domain code
          example: QCL
        Domain Name:
          type: string
          description: Display name of the domain
          example: Crops and livestock products
        Date Update:
          type: string
          format: date
          description: Last update date
          example: '2023-11-01'
    DomainGroup:
      type: object
      properties:
        Group Code:
          type: string
          description: Unique code for the domain group
          example: QC
        Group Name:
          type: string
          description: Display name of the domain group
          example: Production
        Domain Code:
          type: string
          description: Unique code for the domain
          example: QCL
        Domain Name:
          type: string
          description: Display name of the domain
          example: Crops and livestock products
        Date Update:
          type: string
          format: date
          description: Date of last data update
          example: '2023-11-01'
  parameters:
    output_type:
      name: output_type
      in: query
      description: 'Response format: objects (default, JSON array of objects) or arrays (JSON array of arrays) or csv (CSV text)'
      schema:
        type: string
        enum:
        - objects
        - arrays
        - csv
        default: objects
    lang:
      name: lang
      in: path
      required: true
      description: Response language code (en=English, es=Spanish, fr=French, ar=Arabic, zh=Chinese, ru=Russian)
      schema:
        type: string
        enum:
        - en
        - es
        - fr
        - ar
        - zh
        - ru
        default: en
externalDocs:
  description: FAOSTAT Developer Portal
  url: https://www.fao.org/faostat/en/#developer-portal