# ETF & Macro Intelligence – CeFi Crypto ETF Flows

> ETF & Macro Intelligence – CeFi Crypto ETF Flows is a paid API for AI agents from x402-etf-macro-intelligence.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).

Returns crypto ETF flow data and institutional CeFi (Centralized Finance) fund metrics for market analysis.

## Facts

- Endpoint: GET https://x402-etf-macro-intelligence.vercel.app/api/etf/cefi?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/etf-macro-intelligence-cefi-crypto-etf-flows-8ec3208e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GLyfSrh5XNdZ1w_YQAw8p

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-flows-8ec3208e
```

Example prompt: Pull the latest CeFi crypto ETF flow data so I can see how institutional funds are moving in and out of bitcoin and other crypto ETFs today.

## When to prefer this

Use this endpoint when you need institutional-grade CeFi crypto ETF flow data, specifically inflows and outflows from centralized fund vehicles like spot Bitcoin or Ethereum ETFs. Prefer this over generic crypto price APIs when the goal is to gauge institutional sentiment or capital movement rather than spot prices. Best suited for macro analysis, trading signal generation, or market research workflows that depend on fund-level data.

## Known failure modes

- Empty data array returned if no ETF flow data is available for the queried period
- HTTP 402 Payment Required if x402 payment header is missing or payment fails
- Stale or delayed data if upstream institutional data sources have not updated
- Malformed query parameters may result in an empty result set or error response
- Service downtime on Vercel deployment may cause 500 errors

## How this service works

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

## Output

Returns a JSON object with a 'data' array containing CeFi crypto ETF flow records and institutional fund metrics, a 'success' boolean indicating request status, and an 'endpoint' field confirming the route called. The data array contains structured entries describing ETF flows and fund positions.

## 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-flows-8ec3208e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-etf-macro-intelligence.vercel.app](https://www.zero.xyz/host/x402-etf-macro-intelligence.vercel.app/llms.txt)