Futures Funding

{
  "fetched_at": "2026-09-25T13:06:27Z",
  "symbols": {
    "BTC": {
      "consensus": {
        "crowding": "BALANCED",
        "funding_annualized": 0.077,
        "funding_rate_1h": 0.0000088,
        "funding_rate_8h": 0.00007,
        "mark_price": 84548,
        "open_interest_usd_total": 3596000000,
        "venue_count": 2,
        "who_pays": "LONGS_PAY_SHORTS"
      },
      "symbol": "BTC/USD",
      "venues": {
        "hyperliquid": {
          "funding_rate_1h": 0.0000125,
          "instrument": "BTC-PERP",
          "mark_price": 84544,
          "max_leverage_venue": 40,
          "open_interest_usd": 3407000000
        },
        "kraken_futures": {
          "funding_rate_1h": 0.0000051,
          "instrument": "PF_XBTUSD",
          "mark_price": 84551.6,
          "open_interest_usd": 188960000
        }
      }
    }
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://x402.coinopai.com/api/kronos/futures/funding?symbol=BTC'

# 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://x402.coinopai.com/api/kronos/futures/funding?symbol=BTC' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.coinopai.com%2Fapi%2Fkronos%2Ffutures%2Ffunding
const res = await pay("https://x402.coinopai.com/api/kronos/futures/funding?symbol=BTC");
console.log(res.status, await res.text());

# 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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://x402.coinopai.com/api/kronos/futures/funding?symbol=BTC")
    print(res.status_code, res.text)