# SperaxOS ETF Flows Intelligence API

> SperaxOS ETF Flows Intelligence API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-18).

Returns AI-powered DeFi intelligence on ETF (exchange-traded fund) capital flow data, payable per-request via x402 USDC on Base

## Facts

- Endpoint: GET https://chat.sperax.io/api/x402/intel/etf-flows?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speraxos-etf-flows-intelligence-api-5d9991b2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9e4Hb42zsDbhBZ7X6zJuQ

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 speraxos-etf-flows-intelligence-api-5d9991b2
```

Example prompt: Pull the latest ETF capital flow data from SperaxOS — I want to see which crypto ETFs are seeing the biggest inflows and outflows right now.

## When to prefer this

Choose this endpoint when you need real-time or recent ETF capital flow intelligence in the DeFi/crypto space without committing to a subscription API key. Ideal for AI agents that need pay-per-call access to institutional-grade ETF flow data using USDC micropayments on Base via the x402 protocol.

## Known failure modes

- Payment not provided or insufficient — 402 Payment Required returned
- Invalid or malformed query properties in request body
- Upstream data unavailability causing empty or partial response
- Rate limiting or network errors from the x402 payment facilitator
- Wallet lacks funds for micropayment, blocking access

## How this service works

AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.

## Output

Returns AI-analyzed ETF capital flow data including inflow/outflow metrics, fund-level breakdowns, and DeFi intelligence signals derived from on-chain and market data. Response is delivered as structured JSON after a $0.005 USDC x402 micropayment on Base.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speraxos-etf-flows-intelligence-api-5d9991b2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chat.sperax.io](https://www.zero.xyz/host/chat.sperax.io/llms.txt)