openapi: 3.0.3
info:
  title: Calendarific Holiday Countries API
  description: 'Worldwide public holidays REST API covering 230+ countries.

    Calendarific provides accurate holiday data including national, local,

    religious, and observance holidays. Useful for ecommerce, scheduling,

    HR systems, travel planning, and global operations.

    '
  version: '2.0'
  contact:
    name: Calendarific Support
    email: info@calendarific.com
    url: https://calendarific.com/
  termsOfService: https://calendarific.com/terms
  license:
    name: Commercial
    url: https://calendarific.com/pricing
servers:
- url: https://calendarific.com/api/v2
  description: Production
security:
- apiKey: []
tags:
- name: Countries
  description: List supported countries and their ISO codes.
paths:
  /countries:
    get:
      tags:
      - Countries
      summary: List Countries
      description: 'Returns the full list of countries supported by Calendarific,

        including ISO-3166 codes and the languages supported per country.

        '
      operationId: listCountries
      parameters:
      - name: api_key
        in: query
        required: true
        description: Calendarific API key.
        schema:
          type: string
      responses:
        '200':
          description: List of supported countries.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CountriesResponse'
        '401':
          description: Missing or invalid API key.
        '429':
          description: Rate limit exceeded.
components:
  schemas:
    Meta:
      type: object
      properties:
        code:
          type: integer
          description: HTTP-style status code echoed in the body.
          example: 200
      required:
      - code
    CountriesResponse:
      type: object
      properties:
        meta:
          $ref: '#/components/schemas/Meta'
        response:
          type: object
          properties:
            countries:
              type: array
              items:
                $ref: '#/components/schemas/Country'
    Country:
      type: object
      properties:
        country_name:
          type: string
          example: United States
        iso-3166:
          type: string
          example: US
        total_holidays:
          type: integer
          example: 198
        supported_languages:
          type: integer
          example: 4
        uuid:
          type: string
          format: uuid
  securitySchemes:
    apiKey:
      type: apiKey
      in: query
      name: api_key
      description: API key passed as a URL query parameter.