# Fathom Macroeconomic Calendar API

> Fathom Macroeconomic Calendar API is a paid API for AI agents from fredthom.vercel.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-13).

Returns upcoming macroeconomic calendar events (e.g. scheduled economic data releases) powered by FRED data

## Facts

- Endpoint: POST https://fredthom.vercel.app/api/calendar
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fathom-macroeconomic-calendar-api-410a9252
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_13Lc7l4NvDhXvbN3CotKi

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-calendar-api-410a9252 -d '<json body>'
```

Example prompt: Show me the next 20 upcoming macroeconomic calendar events from Fathom's FRED-powered API — things like scheduled GDP, inflation, and unemployment data releases.

## When to prefer this

Use this endpoint when you need a list of upcoming scheduled macroeconomic data release events (economic calendar), particularly sourced from FRED. Prefer this over general economic data series endpoints when the goal is forward-looking scheduling or knowing when key indicators will be published, rather than retrieving historical time-series data.

## Known failure modes

- Invalid limit value returns error or default behavior
- Empty events array if no upcoming calendar events are indexed
- Service unavailability on Vercel hosting returns 5xx
- Payment failure (x402) prevents access if USDC payment is not processed
- Malformed POST body may return 400 or unexpected response

## 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 upcoming economic calendar events (e.g. scheduled data releases for GDP, inflation, unemployment, interest rates) and a source identifier string confirming the data origin.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "string",
   "description": "Max results (default: 15)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "source"
 ],
 "properties": {
  "events": {
   "type": "array",
   "items": {
    "type": "object"
   }
  },
  "source": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fathom-macroeconomic-calendar-api-410a9252/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fredthom.vercel.app](https://www.zero.xyz/host/fredthom.vercel.app/llms.txt)