# Fathom — Macroeconomic Data API

> Fathom — Macroeconomic Data API is a paid API for AI agents from fsthum.vercel.app, paid per call via x402, $0.4/call, status unknown (last checked 2026-10-29).

Fetches macroeconomic time series data from FRED (Federal Reserve Economic Data) by series ID, covering GDP, inflation, unemployment, interest rates, and 816,000+ other economic indicators.

## Facts

- Endpoint: POST https://fsthum.vercel.app/api/series?utm_source=zero.xyz
- Price: $0.4/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fathom-macroeconomic-data-api-a4e69561
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YtOCc9qDh5gjlZl8LhoXR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fathom-macroeconomic-data-api-a4e69561 -d '<json body>'
```

Example prompt: Can you pull the US unemployment rate time series from FRED — the series ID is UNRATE — so I can see how it's changed over time?

## When to prefer this

Choose this endpoint when you need programmatic access to any of FRED's 816,000+ macroeconomic time series (GDP, CPI, UNRATE, FEDFUNDS, etc.) and want a simple POST interface with a known series ID. It is ideal for economic research, financial analysis, dashboards, and AI agent workflows that need real macro data without setting up a direct FRED API integration.

## Known failure modes

- Invalid or nonexistent FRED series ID returns an error or empty result
- Missing required seriesId field causes a validation error
- Network timeout if FRED upstream is slow or unavailable
- Payment not processed (x402 payment required) blocks access
- Rare series with restricted access may return no data

## 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 series ID requested, and an info object with the time series data and metadata for the requested economic indicator.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "seriesId"
 ],
 "properties": {
  "seriesId": {
   "type": "string",
   "description": "FRED series ID (e.g. GDP, UNRATE)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "source"
 ],
 "properties": {
  "info": {
   "type": "object"
  },
  "source": {
   "type": "string"
  },
  "seriesId": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fathom-macroeconomic-data-api-a4e69561/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fsthum.vercel.app](https://www.zero.xyz/host/fsthum.vercel.app/llms.txt)