# ETF & Macro Intelligence – CeFi Crypto ETF Data

> ETF & Macro Intelligence – CeFi Crypto ETF Data is a paid API for AI agents from x402-sand.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-18).

Returns crypto ETF flow data, institutional fund metrics, and US macroeconomic events relevant to centralized finance (CeFi).

## Facts

- Endpoint: GET https://x402-sand.vercel.app/api/etf/cefi?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/etf-macro-intelligence-cefi-crypto-etf-data-7d65c615
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5-r0N3u1_8kYV0hmuDfMK

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 etf-macro-intelligence-cefi-crypto-etf-data-7d65c615
```

Example prompt: Pull the latest crypto ETF flow data and any upcoming US macro events that could impact the market — I want to see how institutional money is moving right now.

## When to prefer this

Choose this endpoint when you need a combined view of crypto ETF institutional flows and US macro event data in a single call, particularly for CeFi-focused market intelligence. Prefer this over general financial data APIs when your focus is specifically on crypto ETF inflows/outflows and their relationship to macroeconomic catalysts.

## Known failure modes

- Empty data array returned if no ETF flow data is available for the requested period
- Payment required error (402) if USDC payment is not included
- API returns success:false if the upstream data provider is unavailable
- Stale or delayed data if macroeconomic event feeds are not refreshed in real time

## How this service works

Crypto ETF flows, institutional fund data, and US macroeconomic events.

## Output

A JSON object with a 'data' array containing crypto ETF flow records, institutional fund metrics, and US macroeconomic event data, plus a 'success' boolean and the endpoint path.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  },
  "additionalProperties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [],
  "success": true,
  "endpoint": "/api/etf/cefi"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/etf-macro-intelligence-cefi-crypto-etf-data-7d65c615/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-sand.vercel.app](https://www.zero.xyz/host/x402-sand.vercel.app/llms.txt)