Crypto Funding Compare

{
  "average_annualized_pct": 5.02,
  "best_spread": {
    "annualized_pct": 9.55,
    "long_on": "Hyperliquid",
    "short_on": "Bitget"
  },
  "coin": "ETH",
  "note": "Positive funding means longs pay shorts. Spread = short the high-funding venue, long the low one.",
  "total_open_interest_usd": 6675936601,
  "unavailable": null,
  "venues": [
    {
      "annualized_pct": -0.46,
      "funding_rate": -5.247e-7,
      "funding_rate_pct": -0.00005,
      "interval_hours": 1,
      "mark_price": 2311.4,
      "market": "ETH",
      "next_funding": null,
      "open_interest_usd": 2524817237,
      "venue": "Hyperliquid"
    },
    {
      "annualized_pct": 3.18,
      "funding_rate": 0.000029,
      "funding_rate_pct": 0.0029,
      "interval_hours": 8,
      "mark_price": 2311.99,
      "market": "ETH_USDT",
      "next_funding": "2026-10-24T16:00:00+00:00",
      "open_interest_usd": 851742457,
      "venue": "Gate"
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://bess-x402.onrender.com/v1/crypto/funding-compare?coin=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 - 'https://bess-x402.onrender.com/v1/crypto/funding-compare?coin=ETH' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fbess-x402.onrender.com%2Fv1%2Fcrypto%2Ffunding-compare
const res = await pay("https://bess-x402.onrender.com/v1/crypto/funding-compare?coin=ETH");
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://bess-x402.onrender.com/v1/crypto/funding-compare?coin=ETH")
    print(res.status_code, res.text)