Open Exchange Rates API

openapi: 3.1.0
info:
  title: Open Exchange Rates API
  version: "1.0.0"
  description: >-
    Minimal OpenAPI description of the Open Exchange Rates JSON API for
    real-time and historical foreign exchange rates. The first API entry in
    the forex.apis.yml index.
  x-generated-from: https://docs.openexchangerates.org
  x-generated-by: claude-crawl-2026-05-08
servers:
  - url: https://openexchangerates.org/api
security:
  - appIdQuery: []
tags:
  - name: Rates
  - name: Reference
  - name: Account
paths:
  /latest.json:
    get:
      tags: [Rates]
      summary: Get the latest exchange rates
      operationId: getLatestRates
      parameters:
        - in: query
          name: app_id
          required: true
          schema:
            type: string
        - in: query
          name: base
          schema:
            type: string
            default: USD
        - in: query
          name: symbols
          schema:
            type: string
        - in: query
          name: prettyprint
          schema:
            type: boolean
            default: false
        - in: query
          name: show_alternative
          schema:
            type: boolean
            default: false
      responses:
        "200":
          description: Latest rates
          content:
            application/json:
              schema:
                type: object
  /historical/{date}.json:
    get:
      tags: [Rates]
      summary: Get historical exchange rates for a given date
      operationId: getHistoricalRates
      parameters:
        - in: path
          name: date
          required: true
          schema:
            type: string
            format: date
        - in: query
          name: app_id
          required: true
          schema:
            type: string
        - in: query
          name: base
          schema:
            type: string
        - in: query
          name: symbols
          schema:
            type: string
      responses:
        "200":
          description: Historical rates
          content:
            application/json:
              schema:
                type: object
  /currencies.json:
    get:
      tags: [Reference]
      summary: List available currencies
      operationId: listCurrencies
      parameters:
        - in: query
          name: app_id
          schema:
            type: string
      responses:
        "200":
          description: Currency list
          content:
            application/json:
              schema:
                type: object
  /usage.json:
    get:
      tags: [Account]
      summary: Get account usage statistics
      operationId: getUsage
      parameters:
        - in: query
          name: app_id
          required: true
          schema:
            type: string
      responses:
        "200":
          description: Usage statistics
          content:
            application/json:
              schema:
                type: object
  /convert/{value}/{from}/{to}:
    get:
      tags: [Rates]
      summary: Convert an amount between two currencies
      operationId: convertCurrency
      parameters:
        - in: path
          name: value
          required: true
          schema:
            type: number
        - in: path
          name: from
          required: true
          schema:
            type: string
        - in: path
          name: to
          required: true
          schema:
            type: string
        - in: query
          name: app_id
          required: true
          schema:
            type: string
        - in: query
          name: prettyprint
          schema:
            type: boolean
      responses:
        "200":
          description: Conversion result
          content:
            application/json:
              schema:
                type: object
components:
  securitySchemes:
    appIdQuery:
      type: apiKey
      in: query
      name: app_id