# Fathom Macroeconomic Data API — Sources Endpoint

> Fathom Macroeconomic Data API — Sources Endpoint is a paid API for AI agents from fredfathom.vercel.app, paid per call via x402, $0.04/call, status unknown (last checked 2026-10-10).

Lists available macroeconomic data sources from the FRED-powered Fathom API, covering 816,000+ economic time series

## Facts

- Endpoint: POST https://fredfathom.vercel.app/api/sources?utm_source=zero.xyz
- Price: $0.04/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fathom-macroeconomic-data-api-sources-endpoint-94579024
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ySiQMYIdRW1-DbxPqZb0e

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-sources-endpoint-94579024 -d '<json body>'
```

Example prompt: Can you show me all the data sources available on the Fathom macroeconomic API so I can figure out which ones have GDP and inflation series?

## When to prefer this

Use this endpoint when you need to discover what macroeconomic data sources are available before querying specific time series. It is the right first step when building economic dashboards, research tools, or automated data pipelines that rely on FRED data. Prefer this over direct FRED API access when you want a pay-per-call model with no API key management, or when operating within an x402 micropayment workflow.

## Known failure modes

- Payment failure (insufficient USDC balance for the $0.04 x402 payment)
- Invalid or malformed POST body causing 400 error
- Service unavailability on the Vercel-hosted endpoint
- Rate limiting or quota exceeded
- Empty or unexpected response if no sources match filter criteria

## 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 list of macroeconomic data sources available through the Fathom API, likely including source names, IDs, and descriptions from the FRED database ecosystem — helping callers identify which sources to query for specific economic indicators.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fathom-macroeconomic-data-api-sources-endpoint-94579024/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)