symbol - there is no series_group parameter. Series-group mode (is_series_group=true) needs region_type, units and frequency alongside it; single-series mode takes a series ID and the server resolves its region group./api/v1/fred/regional?symbol=882&is_series_group=true®ion_type=state&units=Dollars&frequency=a&season=nsa&date=2023-01-01season values are lowercase (sa, nsa, ssa); NSA is rejected.x-api-key: ********************curl --location 'https://sugra.ai/api/v1/fred/regional?symbol=undefined&is_series_group=undefined®ion_type=undefined&units=undefined&frequency=undefined&season=undefined&start_date=undefined&date=undefined&transform=undefined&aggregation_method=undefined' \
--header 'x-api-key: <api-key>'fred_regional.{
"data": {
"symbol": "string",
"region_type": "string",
"seasonality": "string",
"units": "string",
"frequency": "string",
"title": "string",
"count": 0,
"results": [
{
"date": "string",
"region": "string",
"code": "string",
"value": 0,
"series_id": "string",
"units": "string",
"property1": "string",
"property2": "string"
}
],
"property1": "string",
"property2": "string"
},
"meta": {
"endpoint": "/api/v1/fred/us/cpi",
"data_time": "2026-04-16T14:30:00Z",
"response_time": "2026-04-16T14:30:12Z",
"provider": "Sugra API v1.0.1",
"data_age_days": 0,
"source": "string",
"attribution": "string",
"fallback_used": true,
"fallback_chain": [
"string"
],
"cached": true,
"stale": true,
"period": "string",
"notes": "string"
}
}