{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/api-evangelist/reserve-requirements/json-schema/fred-series-schema.json",
  "title": "FRED Economic Data Series",
  "description": "JSON Schema for a FRED (Federal Reserve Economic Data) time series object. Key reserve-related series include RESBALNS (reserve balances with Federal Reserve Banks), BOGMBASE (monetary base), and WRESBAL (reserve balances).",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "Series ID (e.g., RESBALNS, BOGMBASE, WRESBAL).",
      "example": "RESBALNS"
    },
    "realtime_start": {
      "type": "string",
      "format": "date",
      "description": "Realtime start date."
    },
    "realtime_end": {
      "type": "string",
      "format": "date",
      "description": "Realtime end date."
    },
    "title": {
      "type": "string",
      "description": "Series title.",
      "example": "Reserve Balances with Federal Reserve Banks"
    },
    "observation_start": {
      "type": "string",
      "format": "date",
      "description": "Start date of available observations."
    },
    "observation_end": {
      "type": "string",
      "format": "date",
      "description": "End date of available observations."
    },
    "frequency": {
      "type": "string",
      "description": "Data frequency.",
      "example": "Weekly, Ending Wednesday"
    },
    "frequency_short": {
      "type": "string",
      "description": "Short frequency code.",
      "example": "W"
    },
    "units": {
      "type": "string",
      "description": "Data units.",
      "example": "Millions of Dollars"
    },
    "units_short": {
      "type": "string",
      "description": "Short units description.",
      "example": "Mil. of $"
    },
    "seasonal_adjustment": {
      "type": "string",
      "description": "Seasonal adjustment status.",
      "example": "Not Seasonally Adjusted"
    },
    "seasonal_adjustment_short": {
      "type": "string",
      "description": "Short seasonal adjustment code.",
      "example": "NSA"
    },
    "last_updated": {
      "type": "string",
      "format": "date-time",
      "description": "Last update timestamp."
    },
    "popularity": {
      "type": "integer",
      "minimum": 0,
      "maximum": 100,
      "description": "Popularity score (0-100)."
    },
    "notes": {
      "type": "string",
      "description": "Series notes and descriptions."
    }
  },
  "required": ["id", "title", "frequency", "units", "observation_start", "observation_end"]
}