Options Iv Eth

{
  "as_of": "2026-01-01T00:00:00.000Z",
  "asset": "BTC-USD",
  "atm_iv": 42.8,
  "available": true,
  "data_source": "deribit",
  "disclaimer": "Options data from Deribit public API. Informational only.",
  "iv_history_days": 45,
  "iv_percentile": 61.2,
  "iv_rank": 58.3,
  "iv_rank_note": "Based on 45 trading days of ATM IV history.",
  "max_pain_strike": 60000,
  "skew_25d": 3.8,
  "skew_note": "25-delta risk reversal: put IV minus call IV at BS-approximated 25-delta strikes.",
  "term_structure": [
    {
      "atm_iv": 44.2,
      "days_to_expiry": 3,
      "expiry": "5JUL26",
      "label": "weekly"
    },
    {
      "atm_iv": 42.5,
      "days_to_expiry": 29,
      "expiry": "31JUL26",
      "label": "1m"
    },
    {
      "atm_iv": 40.1,
      "days_to_expiry": 85,
      "expiry": "25SEP26",
      "label": "3m"
    }
  ],
  "term_structure_shape": "contango",
  "underlying_price": 61200,
  "vol_regime": "normal",
  "vol_regime_note": "ATM IV 42.8%, term structure contango.",
  "wing_10d_call_iv": 38.5,
  "wing_10d_put_iv": 49.2
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://kronossignals.com/api/v1/options-iv/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://kronossignals.com/api/v1/options-iv/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 $0.03 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.03" });
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 $0.03 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fkronossignals.com%2Fapi%2Fv1%2Foptions-iv%2Feth
const res = await pay("https://kronossignals.com/api/v1/options-iv/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 $0.03 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.03"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://kronossignals.com/api/v1/options-iv/eth")
    print(res.status_code, res.text)