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Fathom Macroeconomic Data API — Tags Endpoint
x402
Fathom Macroeconomic Data API — Tags Endpoint is a paid API for AI agents from fredthom.vercel.app, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-14).
Returns a list of available tags/categories used to organize FRED economic time series, with optional keyword filtering and result limiting
Price / call$0.35
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 tag objects available in the FRED dataset, filtered by the search keyword if provided, plus a source identifier string. Each tag represents a category or label used to organize the 816,000+ economic time series in the database.
Example use cases
Example prompt
“Search the Fathom macroeconomic data API for up to 20 tags related to 'inflation' so I can see what categories of FRED economic series are available on that topic.”
Technical details
Endpoint
POSThttps://fredthom.vercel.app/api/tagsWhen to prefer
Use this endpoint when an agent needs to discover what categories or topics of economic data are available in the FRED database before querying specific series. It is the right entry point for navigating the taxonomy of 816,000+ economic time series — ideal for building dynamic search flows, populating dropdown filters, or understanding what macroeconomic domains are covered.
Side effects
- Invalid or missing limit parameter type (string expected, not integer)
- No tags found matching the search keyword — returns empty tags array
- API payment failure via x402 — 402 Payment Required if USDC not sent
- Network timeout on Vercel serverless function
- Search keyword too broad — returns full default 50 results without meaningful filtering
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | string | Max results (default: 50) |
| search | string | Filter tags by keyword |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| tags | array | |
| sourcerequired | string |
Tags
x402
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