$0.03
per call · USD Coin on Base
Implied volatility surface for BTC and ETH from Deribit options (public API, no auth). Returns ATM IV (annualized %), IV rank and IV percentile from Kronos iv_history (daily cron), term structure (weekly/1m/3m ATM IV + contango/backwardation/flat shape label), 25-delta risk reversal (BS-approximated strikes), 10-delta wing IVs, max-pain strike across top-5 expiries, and a vol-regime label. Falls back to OKX if Deribit is unreachable. $0.03 USDC via x402.
Endpoint
GET https://kronossignals.com/api/v1/options-iv/btc15
Calls / 30d
7
Unique payers / 30d
Sep 10
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://kronossignals.com/api/v1/options-iv/btc", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://kronossignals.com/api/v1/options-iv/btc" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"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
}Payment details
0x36038e1d712c5e39f35952164ec58ec2b96caee7USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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