{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "HistoricalRatesResponse",
  "description": "Historical exchange rates response for a specific date (Pro / Business / Volume plans).",
  "type": "object",
  "properties": {
    "result": {
      "type": "string",
      "description": "Status indicator."
    },
    "documentation": {
      "type": "string",
      "format": "uri",
      "description": "Link to API documentation."
    },
    "terms_of_use": {
      "type": "string",
      "format": "uri",
      "description": "Link to terms of use."
    },
    "year": {
      "type": "integer",
      "description": "Year of historical record."
    },
    "month": {
      "type": "integer",
      "description": "Month of historical record."
    },
    "day": {
      "type": "integer",
      "description": "Day of historical record."
    },
    "base_code": {
      "type": "string",
      "description": "Base currency for the rates."
    },
    "requested_amount": {
      "type": "number",
      "description": "Optional: amount supplied for conversion."
    },
    "conversion_rates": {
      "type": "object",
      "description": "Mapping of currency codes to historical exchange rates.",
      "additionalProperties": {"type": "number"}
    },
    "conversion_amounts": {
      "type": "object",
      "description": "Optional: mapping of currency codes to converted amounts when amount supplied.",
      "additionalProperties": {"type": "number"}
    }
  },
  "required": ["result", "year", "month", "day", "base_code"]
}