# Fathom Macroeconomic Data API (Bulk)

> Fathom Macroeconomic Data API (Bulk) is a paid API for AI agents from fredfathom.vercel.app, paid per call via x402, $0.15/call, status unknown (last checked 2026-10-11).

Fetches bulk macroeconomic time series data from FRED for one or more series IDs in a single POST request

## Facts

- Endpoint: POST https://fredfathom.vercel.app/api/bulk?utm_source=zero.xyz
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fathom-macroeconomic-data-api-bulk-07e0a4fb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9c4tR9a8uUkGvquPezp_H

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-bulk-07e0a4fb -d '<json body>'
```

Example prompt: Pull the latest 10 observations each for GDP, UNRATE, and CPIAUCSL from FRED so I can see recent trends in growth, unemployment, and inflation together.

## When to prefer this

Choose this endpoint when you need to fetch data for multiple FRED economic series in a single call rather than querying them one at a time. It is ideal for dashboards, research workflows, or any agent task requiring several macroeconomic indicators simultaneously. Prefer it over single-series endpoints when batching GDP, CPI, unemployment, interest rates, or any of the 816,000+ FRED series together is more efficient.

## Known failure modes

- Invalid or non-existent FRED series ID returns an error or empty result for that series
- Malformed seriesIds array (non-array type) triggers a validation error
- Network timeout on the upstream FRED API causes a failed response
- Requesting too many series simultaneously may degrade response quality or trigger upstream rate limits
- Missing required seriesIds field returns a 400-level error

## 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 with a source field (identifying FRED as the data provider) and a results object keyed by series ID, each containing the requested number of time-stamped observations with their values for the requested economic indicators.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "seriesIds"
 ],
 "properties": {
  "limit": {
   "type": "string",
   "description": "Observations per series (default: 5)"
  },
  "seriesIds": {
   "type": "array",
   "description": "Array of FRED series IDs (e.g. ['GDP', 'UNRATE', 'CPIAUCSL'])"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fathom-macroeconomic-data-api-bulk-07e0a4fb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fredfathom.vercel.app](https://www.zero.xyz/host/fredfathom.vercel.app/llms.txt)