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Fathom Macroeconomic Data API — Category Series Lookup
x402
Fathom Macroeconomic Data API — Category Series Lookup is a paid API for AI agents from fredthom.vercel.app, paid per call via x402, $0.4/call, status unknown (last checked 2026-09-14).
Returns a list of FRED economic time series belonging to a specified category, such as GDP, inflation, or unemployment series.
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
An array of FRED economic time series objects associated with the given category ID, along with the source attribution string and the category ID used in the query. Each series object typically includes metadata such as series ID, title, frequency, and units.
Example use cases
Example prompt
“Can you show me up to 50 economic time series available under FRED category 32992 — I'm trying to find all the interest rate indicators grouped in that category.”
Technical details
Endpoint
POSThttps://fredthom.vercel.app/api/category-seriesWhen to prefer
Use this endpoint when you need to discover or enumerate all economic time series within a known FRED category, such as exploring what indicators are available under a topic like inflation, GDP, or employment. It is ideal for building data catalogs, letting users browse available series before selecting one to fetch data for, or when you know the FRED category ID but need to find the specific series IDs it contains.
Side effects
- Missing or invalid categoryId returns an error or empty series array
- Non-existent FRED category ID returns empty results with no series
- Upstream FRED API unavailability causes request failure
- Invalid limit parameter type may cause unexpected truncation or error
- Payment failure (x402) blocks access before the query is processed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | string | Max results (default: 20) |
| categoryIdrequired | string | FRED category ID |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| series | array | |
| sourcerequired | string | |
| category_id | string |
Tags
x402
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