openapi: 3.0.3
info:
  title: Fixer Conversion Symbols API
  description: 'Fixer is a lightweight JSON API for real-time and historical foreign exchange

    rates and currency conversion. Sourced primarily from the European Central Bank

    and 15+ other exchange rate data providers, Fixer supports 170+ world currencies.


    The API is delivered via the APILayer marketplace. All requests authenticate via

    an `apikey` HTTP header. The free tier is limited to 100 requests per month and

    is HTTP-only; HTTPS encryption and source-currency switching become available on

    the Basic plan and above.

    '
  version: 1.0.0
  contact:
    name: Fixer Support
    url: https://fixer.io/contact
  license:
    name: Commercial
    url: https://fixer.io/terms
  termsOfService: https://fixer.io/terms
  x-provider: fixer
  x-parent: apilayer
servers:
- url: https://api.apilayer.com/fixer
  description: APILayer-hosted production endpoint (current)
- url: http://data.fixer.io/api
  description: Legacy data.fixer.io endpoint (HTTP, free tier)
- url: https://data.fixer.io/api
  description: Legacy data.fixer.io endpoint (HTTPS, paid tiers)
security:
- ApiKeyAuth: []
tags:
- name: Symbols
  description: Discovery of supported currency symbols.
paths:
  /symbols:
    get:
      operationId: getSymbols
      summary: List Supported Currency Symbols
      description: Returns all currency symbols Fixer supports along with their full names.
      tags:
      - Symbols
      responses:
        '200':
          description: A map of currency codes to currency names.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SymbolsResponse'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  responses:
    Unauthorized:
      description: Missing or invalid `apikey` header.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    RateLimited:
      description: Monthly request quota exhausted or per-minute rate limit hit.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    SymbolsResponse:
      type: object
      required:
      - success
      - symbols
      properties:
        success:
          type: boolean
          example: true
        symbols:
          type: object
          additionalProperties:
            type: string
          example:
            AED: United Arab Emirates Dirham
            AFN: Afghan Afghani
            ALL: Albanian Lek
    ErrorResponse:
      type: object
      required:
      - success
      - error
      properties:
        success:
          type: boolean
          example: false
        error:
          type: object
          properties:
            code:
              type: integer
              example: 104
            type:
              type: string
              example: monthly_limit_reached
            info:
              type: string
              example: Your monthly API request volume has been reached. Please upgrade your plan.
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: apikey
      description: APILayer API key provisioned at https://apilayer.com/marketplace/fixer-api.