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Fathom Macroeconomic Data API — Category Tags
x402
Fathom Macroeconomic Data API — Category Tags is a paid API for AI agents from fredthom.vercel.app, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-15).
Retrieves the tags associated with a specific FRED economic data category by category ID
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
Returns an array of tag objects associated with the specified FRED category, along with the category ID and a source identifier indicating the data origin (e.g. FRED).
Example use cases
Example prompt
“What tags are associated with FRED category 125 — the National Accounts category? I want to understand how it's classified in the Fathom macroeconomic data system.”
Technical details
Endpoint
POSThttps://fredthom.vercel.app/api/category-tagsWhen to prefer
Use this endpoint when you need to discover or enumerate the descriptive tags associated with a specific FRED economic data category — useful for metadata exploration, building search filters, or understanding category classification before fetching actual time series data.
Side effects
- Invalid or non-existent FRED category ID returns empty tags array or error
- Missing required categoryId field results in validation error
- Upstream FRED API unavailability may cause failed or stale responses
- Malformed categoryId (non-numeric string) may return no results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| categoryIdrequired | string | FRED category ID |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| tags | array | |
| sourcerequired | string | |
| category_id | string |
Tags
x402
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