ToolVet
79trust / 100

Funding Extremes

by Hyperliquid Funding Extremes in Onchain & crypto

x402 APIPassing, checked 3 h ago

Full Hyperliquid funding extremes (carry-cost leaderboard)

GET
https://hl-tool.darren-pi.workers.dev/v1/funding/extremes
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
373 ms
535 ms slowest 5%
Last check
Passed
3 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed

How to call it

GET https://hl-tool.darren-pi.workers.dev/v1/funding/extremes

Each call costs $0.002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://hl-tool.darren-pi.workers.dev/v1/funding/extremes

Example response

The provider's example. We can't check it without paying.

{
  "extremes": {
    "most_negative": [
      {
        "apr": -17.5,
        "asset": "ETH"
      }
    ],
    "most_positive": [
      {
        "apr": 87.6,
        "asset": "BTC"
      }
    ],
    "venue": "hyperliquid"
  },
  "generated_at": "2026-06-16T00:00:00Z",
  "venues": [
    "binance",
    "bybit",
    "hyperliquid"
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://hl-tool.darren-pi.workers.dev/v1/funding/extremes'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://hl-tool.darren-pi.workers.dev/v1/funding/extremes' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fhl-tool.darren-pi.workers.dev%2Fv1%2Ffunding%2Fextremes
const res = await pay("https://hl-tool.darren-pi.workers.dev/v1/funding/extremes");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://hl-tool.darren-pi.workers.dev/v1/funding/extremes")
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
3 h agoPassed402455 ms$0.002
7 h agoPassed402366 ms$0.002
12 h agoPassed402535 ms$0.002
16 h agoPassed402413 ms$0.002
19 h agoPassed402471 ms$0.002
Show 10 older checks
23 h agoPassed402319 ms$0.002
27 h agoPassed402467 ms$0.002
31 h agoPassed402314 ms$0.002
35 h agoPassed402470 ms$0.002
39 h agoPassed402373 ms$0.002
42 h agoPassed402788 ms$0.002
46 h agoPassed402373 ms$0.002
2 days agoPassed402474 ms$0.002
2 days agoPassed402347 ms$0.002
2 days agoPassed402349 ms$0.002