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Fathom Macroeconomic Data API — Search Tags
x402
Fathom Macroeconomic Data API — Search Tags is a paid API for AI agents from fathoms.vercel.app, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-15).
Search and retrieve tag metadata from 816,000+ FRED-powered economic time series, enabling discovery of relevant macroeconomic data categories.
Price / call$0.04
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 an array of tag objects matching the search keyword, the original query string, and the data source identifier. Each tag object represents a metadata category used to classify FRED economic time series.
Example use cases
Discover GDP data categories
“Search for tags related to 'GDP' in the Fathom macro data API — I want to see what categories of gross domestic product series are available, give me up to 20 results.”
Find unemployment indicator tags
“Can you search Fathom's FRED-powered API for tags matching 'unemployment' so I can figure out which series categories cover jobless rates and labor market data?”
Browse interest rate series tags
“Look up tags for 'interest rates' in the Fathom macroeconomic API and return 15 results — I'm trying to identify which tag categories cover federal funds rate and Treasury yield data.”
Technical details
Endpoint
POSThttps://fathoms.vercel.app/api/search-tagsWhen to prefer
Use this endpoint when you need to discover or browse the taxonomy of economic data tags available in the FRED database before fetching actual time series data. It is ideal for exploratory research to identify which categories and labels exist for a given macroeconomic topic, acting as a first step before querying specific series.
Side effects
- Missing required 'query' field returns an error
- Empty query string may return zero tags
- Invalid limit value (non-numeric string) may cause unexpected behavior
- Network timeout if FRED upstream is slow
- Zero results for very niche or misspelled keywords
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | string | Max results (default: 20) |
| queryrequired | string | Search keyword |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| tags | array | |
| query | string | |
| sourcerequired | string |
Tags
x402
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