Market Funding Spreads

{
  "as_of": "2026-07-10T13:00:00.000Z",
  "requested_symbol": "BTC",
  "scope": "Current public perpetual-market snapshot; not financial advice.",
  "sources": [
    {
      "markets": 1,
      "status": "ok",
      "venue": "binance"
    },
    {
      "markets": 1,
      "status": "ok",
      "venue": "bybit"
    },
    {
      "markets": 1,
      "status": "ok",
      "venue": "hyperliquid"
    },
    {
      "markets": 1,
      "status": "ok",
      "venue": "okx"
    }
  ],
  "spreads": [
    {
      "gross_annualized_spread_pct": 8.2125,
      "highest_rate_venue": "bybit",
      "lowest_rate_venue": "hyperliquid",
      "symbol": "BTC",
      "venues": [
        {
          "annualized_rate_pct": 10.95,
          "funding_interval_hours": 1,
          "funding_rate": 0.0000125,
          "funding_rate_pct": 0.00125,
          "mark_price_usd": 64355,
          "next_funding_at": null,
          "symbol": "BTC",
          "venue": "hyperliquid"
        }
      ]
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://x402.fablerlabs.com/market/funding-spreads?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.fablerlabs.com/market/funding-spreads?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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.fablerlabs.com%2Fmarket%2Ffunding-spreads
const res = await pay("https://x402.fablerlabs.com/market/funding-spreads?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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
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.fablerlabs.com/market/funding-spreads?symbol=BTC")
    print(res.status_code, res.text)