{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/fixer/json-schema/fixer-rates-schema.json",
  "title": "Fixer Rates Response",
  "description": "Envelope returned by /latest and /{date} containing real-time or historical end-of-day exchange rates.",
  "type": "object",
  "required": ["success", "timestamp", "base", "date", "rates"],
  "properties": {
    "success": {
      "type": "boolean",
      "description": "Indicates whether the request succeeded."
    },
    "timestamp": {
      "type": "integer",
      "description": "Unix timestamp (seconds) when the rates were published."
    },
    "historical": {
      "type": "boolean",
      "description": "Present and true when the response represents historical rates."
    },
    "base": {
      "type": "string",
      "description": "ISO 4217 base currency code anchoring the rate set.",
      "pattern": "^[A-Z]{3}$"
    },
    "date": {
      "type": "string",
      "format": "date",
      "description": "Date the rates apply to (YYYY-MM-DD)."
    },
    "rates": {
      "type": "object",
      "description": "Map of ISO 4217 currency code to exchange rate against the base currency.",
      "additionalProperties": {
        "type": "number"
      }
    }
  }
}