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Fathom Macroeconomic Data API — Release Series
x402
Fathom Macroeconomic Data API — Release Series is a paid API for AI agents from frederalfathom.vercel.app, paid per call via x402, $0.4/call, status unknown (last checked 2026-10-29).
Retrieves the list of economic time series belonging to a specific FRED data release (e.g. all series in the GDP release)
Price / call$0.4
Success—
StatusUnknown
How this service works
Free macroeconomic data API powered by FRED. 816,000+ economic time series. GDP, inflation, unemployment, interest rates, and more.
Output
Returns a JSON object containing the source attribution (FRED), the queried release ID, and an array of series objects — each describing an economic time series belonging to that release, including metadata such as series ID, title, frequency, units, and observation dates.
Example use cases
Exploring GDP release series
“Show me all the time series included in FRED release 53 — I want to see what GDP data series are available, up to 30 results.”
Finding CPI inflation indicators
“What economic series are in FRED's Consumer Price Index release? Use release ID 10 and give me the first 20 series so I can pick the right inflation indicator.”
Researching unemployment data series
“List all the series under FRED release 50, which covers unemployment data — I need to find the right series before I pull the actual numbers.”
Technical details
Endpoint
POSThttps://frederalfathom.vercel.app/api/release-series?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to discover which specific economic time series belong to a particular FRED data release — ideal for exploring available indicators before fetching actual data values. Prefer this over general search endpoints when you already know the FRED release ID and want a structured list of its constituent series. It is especially useful for building data pipelines that need to enumerate all series in a release category like GDP, CPI, or unemployment.
Side effects
- Missing or invalid releaseId returns an error or empty series array
- Non-existent FRED release ID may return empty results with no series
- Exceeding API rate limits may result in request failures
- Network timeout from the Vercel-hosted proxy layer
- Malformed limit parameter (non-numeric string) may cause unexpected behavior
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | string | Max results (default: 20) |
| releaseIdrequired | string | FRED release ID |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| series | array | |
| sourcerequired | string | |
| release_id | string |
Tags
x402
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