# MacroLens Series Lookup — FRED Economic Data Retrieval

> MacroLens Series Lookup — FRED Economic Data Retrieval is a paid API for AI agents from marcrons.vercel.app, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-14).

Retrieves macroeconomic time-series data for a given FRED series ID, powered by FRED and World Bank datasets with AI-augmented analysis via MiMo LLM.

## Facts

- Endpoint: POST https://marcrons.vercel.app/api/series
- Price: $0.35/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/macrolens-series-lookup-fred-economic-data-retrieval-5e2332f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K0yjmTqIrXswWxTjaryJy

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 macrolens-series-lookup-fred-economic-data-retrieval-5e2332f5 -d '<json body>'
```

Example prompt: Pull the FRED data series for UNRATE — I want to see the unemployment rate historical data from the MacroLens API.

## When to prefer this

Choose this endpoint when you need to programmatically retrieve specific FRED economic time-series data by series ID and want AI-augmented analysis via MiMo LLM layered on top of raw Federal Reserve and World Bank data. Prefer this over raw FRED API calls when you want a payment-gated, agent-friendly interface that combines FRED and World Bank data in a single service with built-in macro intelligence.

## Known failure modes

- Invalid or nonexistent series_id returns failure or empty data object
- Missing required series_id field causes request validation error
- Network or upstream FRED API outage may cause delayed or failed response
- Payment failure (insufficient USDC balance) blocks request from processing
- Rate limiting if multiple rapid calls are made

## How this service works

AI-powered macro-economic analysis. FRED + World Bank data + MiMo LLM. 20 endpoints. x402 on Base.

## Output

Returns a JSON object with a success boolean and a data object containing the requested FRED economic time-series data, including historical observations, values, and metadata for the specified series ID.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "series_id"
 ],
 "properties": {
  "series_id": {
   "type": "string",
   "description": "series_id"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "success"
 ],
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/macrolens-series-lookup-fred-economic-data-retrieval-5e2332f5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from marcrons.vercel.app](https://www.zero.xyz/host/marcrons.vercel.app/llms.txt)