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Etf Brief

by etf-brief in Onchain & crypto

x402 APIPassing, checked 41 min ago

Fusion flow brief for spot Bitcoin or Ethereum ETFs in ONE call: latest total net flow, the inflow/outflow streak, the window cumulative, flow momentum, issuer concentration, total AUM and a deterministic accumulation, distribution or neutral verdict. Saves several issuer queries plus the differencing.

GET https://api.agentstools.dev/etf/brief

Last 30 days

All checks passedSome failedAll failedNot checked
Uptime
100%
Response time
22 ms typical, 22 ms slowest 5%
Last check
41 min ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X GET "https://api.agentstools.dev/etf/brief?asset=btc&region=us"
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.agentstools.dev%2Fetf%2Fbrief
const res = await pay("https://api.agentstools.dev/etf/brief?asset=btc&region=us");
console.log(await res.json());

Example input

{
  "asset": "btc",
  "region": "us"
}

Example output

{
  "as_of": "2026-07-17",
  "asset": "btc",
  "coin": "BTC",
  "concentration": {
    "aum_share": 0.55,
    "largest_fund": "IBIT"
  },
  "cumulative_window_usd": 305120000,
  "latest_flow_usd": 135049000,
  "momentum": {
    "accelerating": true,
    "prior_sum_usd": 95000000,
    "recent_sum_usd": 210000000
  },
  "partial": false,
  "region": "us",
  "streak": {
    "direction": "inflow",
    "length": 3
  },
  "total_aum_usd": 85000000000,
  "verdict": "accumulation"
}

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
41 min agoPassed40222 ms$0.02
6 h agoPassed402142 ms$0.02