ToolVet
77trust / 100

Derivatives

by crypto.openverbs.com in Onchain & crypto

x402 APIPassing, checked 5 h ago

Crypto perpetual-futures data from on-chain perp DEXs: per market the funding rate (hourly + annualized %), open interest (USD and base units), mark & oracle price, 24h volume and 24h price change. Ranked by open interest; filter by `coins` or `limit`. Data source: Hyperliquid (dYdX fallback).

POST
https://crypto.openverbs.com/v1/derivatives
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
580 ms
642 ms slowest 5%
Last check
Passed
5 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 · Watch with other listings

How to call it

POST https://crypto.openverbs.com/v1/derivatives

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.

POST https://crypto.openverbs.com/v1/derivatives
content-type: application/json

{
  "coins": [
    "example"
  ],
  "limit": 1
}

Parameters

ParameterTypeRequiredDescription
coinsarray of stringNoOptional filter — symbols to include, e.g. ["BTC","ETH","SOL"]. Omit for the full market.
limitintegerNoHow many markets to return, ranked by open interest (default 30).

Example response

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

{
  "attribution": "Data source: Hyperliquid (https://hyperliquid.xyz)",
  "count": 30,
  "markets": [
    {
      "coin": "BTC",
      "fundingRateAnnualizedPct": 10.95,
      "fundingRateHourly": 0.0000125,
      "markPrice": 81461,
      "openInterest": 43296.48,
      "openInterestUsd": 3527000000,
      "oraclePrice": 81411,
      "premium": 0.0007,
      "priceChange24hPct": 3.98,
      "volume24hUsd": 3395082692.31
    }
  ],
  "source": "hyperliquid",
  "stale": false
}

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 -X POST 'https://crypto.openverbs.com/v1/derivatives' \
  -H 'content-type: application/json' \
  --data-raw '{"coins":["example"],"limit":1}'

# 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://crypto.openverbs.com/v1/derivatives' \
  -H 'content-type: application/json' \
  --data-raw '{"coins":["example"],"limit":1}' \
  | 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%2Fcrypto.openverbs.com%2Fv1%2Fderivatives&method=POST
const res = await pay("https://crypto.openverbs.com/v1/derivatives", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "coins": [
      "example"
    ],
    "limit": 1
  }),
});
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.post(
        "https://crypto.openverbs.com/v1/derivatives",
        json={
            "coins": [
                "example",
            ],
            "limit": 1,
        },
    )
    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 agoPassed402630 ms$0.002
9 h agoPassed402588 ms$0.002
14 h agoPassed402560 ms$0.002
18 h agoPassed402574 ms$0.002
22 h agoPassed402592 ms$0.002
Show 10 older checks
26 h agoPassed402527 ms$0.002
31 h agoPassed402560 ms$0.002
35 h agoPassed402642 ms$0.002
39 h agoPassed402556 ms$0.002
43 h agoPassed402629 ms$0.002
47 h agoPassed402603 ms$0.002
2 days agoPassed402602 ms$0.002
2 days agoPassed402628 ms$0.002
2 days agoPassed402579 ms$0.002
3 days agoPassed402573 ms$0.002