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FRED Series Metadata Lookup
x402
FRED Series Metadata Lookup is a paid API for AI agents from agent402.tools, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns descriptive metadata for a FRED economic data series — title, frequency, units, seasonal adjustment, date range, and popularity score.
Price / call$0.005
Success—
StatusUnknown
How this service works
Metadata for a FRED series: title, frequency, units, seasonal adjustment, observation date range, and popularity. Use before /api/fred-series to confirm the series fits your needs. ?seriesId=UNRATE This product uses the FRED(R) API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
Output
Returns a JSON object containing the series title, observation frequency (e.g. monthly, quarterly), units of measurement, seasonal adjustment status, earliest and latest observation dates, and a popularity score — everything needed to confirm the series is appropriate before fetching its data.
Example use cases
Example prompt
“Before I pull the actual data, can you check the metadata for FRED series UNRATE — specifically its frequency, units, seasonal adjustment, and the date range it covers?”
Technical details
Endpoint
GEThttps://agent402.tools/api/fred-series-infoWhen to prefer
Use this endpoint before calling /api/fred-series to confirm a series exists, understand its frequency and units, and verify it covers the time range you need. Prefer this over directly fetching series data when you are unsure whether a given series ID is valid or appropriate for your analysis.
Side effects
- Invalid or unknown seriesId returns an error — FRED series IDs are case-sensitive (e.g. 'unrate' may fail where 'UNRATE' succeeds)
- Network timeout or upstream FRED API unavailability causes a 5xx response
- Missing required seriesId query parameter returns a 400-level validation error
- Discontinued or renamed series may return limited metadata with no recent observation dates
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "UNRATE",
"title": "Unemployment Rate",
"units": "Percent",
"frequency": "Monthly",
"popularity": 94,
"observationEnd": "2026-05-01",
"observationStart": "1948-01-01"
}
}Tags
x402
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