ToolVet
15trust / 100

Funding Rates

by Vextorium in Other

x402 APIFailing, checked 5 h ago

Perpetual funding rates on Hyperliquid, dYdX, Paradex and Aevo normalized to 1h, 8h and annualized APR. For one coin it compares venues and the long/short spread; without a coin it lists the biggest cross-exchange funding spreads (funding arbitrage).

POST
https://api.vextorium.com/v1/funding-rates
Price
$0.005
per call in USDC
Uptime
0.0%
last 30 days
Response time
-
no timed checks yet
Last check
Failed
5 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Latest check failed 5 h ago: Amount "0.005" is not in atomic token units

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.vextorium.com/v1/funding-rates

Each call costs $0.005 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.

POST https://api.vextorium.com/v1/funding-rates
content-type: application/json

{
  "currency": "ETH"
}

Parameters

ParameterTypeRequiredDescription
currencystringNoBTC, ETH, SOL... (omit to scan spreads)
limitintegerNo

Example response

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

{
  "annual_difference_pct": 11.17,
  "currency": "ETH",
  "exchanges": [
    {
      "annual_pct": -0.22,
      "exchange": "dYdX",
      "open_interest_usd": 12227137,
      "price": 2683.42,
      "rate_1h_pct": -0.000025,
      "rate_8h_pct": -0.0002
    },
    {
      "annual_pct": 3.5,
      "exchange": "Aevo",
      "open_interest_usd": null,
      "price": null,
      "rate_1h_pct": 0.0004,
      "rate_8h_pct": 0.0032
    }
  ],
  "note": "Positive funding: longs pay shorts. Current rates, they change every hour.",
  "strategy": "Long on dYdX and short on Hyperliquid collects the funding difference (before fees and risk).",
  "without_data": null
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/funding-rates' \
  -H 'content-type: application/json' \
  --data-raw '{"currency":"ETH"}'

# 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 - -X POST 'https://api.vextorium.com/v1/funding-rates' \
  -H 'content-type: application/json' \
  --data-raw '{"currency":"ETH"}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Ffunding-rates&method=POST
const res = await pay("https://api.vextorium.com/v1/funding-rates", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "currency": "ETH"
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/funding-rates",
        json={
            "currency": "ETH",
        },
    )
    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
5 h agoAmount "0.005" is not in atomic token units40298 ms$0.005
10 h agoAmount "0.005" is not in atomic token units40294 ms$0.005
15 h agoAmount "0.005" is not in atomic token units402218 ms$0.005
20 h agoAmount "0.005" is not in atomic token units402268 ms$0.005
24 h agoAmount "0.005" is not in atomic token units402261 ms$0.005
Show 10 older checks
29 h agoAmount "0.005" is not in atomic token units40297 ms$0.005
34 h agoAmount "0.005" is not in atomic token units402102 ms$0.005
39 h agoAmount "0.005" is not in atomic token units40299 ms$0.005
43 h agoAmount "0.005" is not in atomic token units402301 ms$0.005
2 days agoAmount "0.005" is not in atomic token units402230 ms$0.005
2 days agoAmount "0.005" is not in atomic token units402221 ms$0.005
2 days agoAmount "0.005" is not in atomic token units40281 ms$0.005
3 days agoAmount "0.005" is not in atomic token units40280 ms$0.005
3 days agoAmount "0.005" is not in atomic token units40279 ms$0.005
3 days agoAmount "0.005" is not in atomic token units402101 ms$0.005