{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/HistoricalRatesResponse",
  "title": "HistoricalRatesResponse",
  "type": "object",
  "properties": {
    "base": {
      "type": "string",
      "description": "Base currency code",
      "example": "USD"
    },
    "date": {
      "type": "string",
      "format": "date",
      "description": "Historical date queried",
      "example": "2026-01-01"
    },
    "exchange_rates": {
      "type": "object",
      "description": "Map of currency codes to historical exchange rates",
      "additionalProperties": {
        "type": "number"
      }
    }
  }
}