Options Deribit

{
  "currency": "BTC",
  "expiries": [
    {
      "atm_iv_pct": 34.5,
      "call_oi": 730.8,
      "days_to_expiry": 0.4,
      "expiry": "13OCT26",
      "expiry_date": "2026-10-13",
      "max_pain_strike": 83500,
      "put_call_oi_ratio": 1.378,
      "put_oi": 1006.8,
      "total_oi_usd": 142770269
    },
    {
      "atm_iv_pct": 31.8,
      "call_oi": 502.2,
      "days_to_expiry": 1.4,
      "expiry": "14OCT26",
      "expiry_date": "2026-10-14",
      "max_pain_strike": 83000,
      "put_call_oi_ratio": 0.637,
      "put_oi": 319.9,
      "total_oi_usd": 67548019
    },
    {
      "atm_iv_pct": 34.2,
      "call_oi": 476.2,
      "days_to_expiry": 2.4,
      "expiry": "15OCT26",
      "expiry_date": "2026-10-15",
      "max_pain_strike": 83000,
      "put_call_oi_ratio": 0.584,
      "put_oi": 277.9,
      "total_oi_usd": 61960785
    },
    {
      "atm_iv_pct": 34.3,
      "call_oi": 6591.7,
      "days_to_expiry": 3.4,
      "expiry": "16OCT26",
      "expiry_date": "2026-10-16",
      "max_pain_strike": 83000,
      "put_call_oi_ratio": 1.39,
      "put_oi": 9162.7,
      "total_oi_usd": 1294463584
    },
    {
      "atm_iv_pct": 32.7,
      "call_oi": 4258.5,
      "days_to_expiry": 10.4,
      "expiry": "23OCT26",
      "expiry_date": "2026-10-23",
      "max_pain_strike": 83000,
      "put_call_oi_ratio": 1.418,
      "put_oi": 6038.9,
      "total_oi_usd": 846088033
    },
    {
      "atm_iv_pct": 33.7,
      "call_oi": 95662.4,
      "days_to_expiry": 17.4,
      "expiry": "30OCT26",
      "expiry_date": "2026-10-30",
      "max_pain_strike": 78000,
      "put_call_oi_ratio": 0.487,
      "put_oi": 46588.5,
      "total_oi_usd": 11688075071
    },
    {
      "atm_iv_pct": 36.9,
      "call_oi": 15521,
      "days_to_expiry": 45.4,
      "expiry": "27NOV26",
      "expiry_date": "2026-11-27",
      "max_pain_strike": 80000,
      "put_call_oi_ratio": 0.553,
      "put_oi": 8585.7,
      "total_oi_usd": 1980732068
    },
    {
      "atm_iv_pct": 37.2,
      "call_oi": 78344.6,
      "days_to_expiry": 73.4,
      "expiry": "25DEC26",
      "expiry_date": "2026-12-25",
      "max_pain_strike": 75000,
      "put_call_oi_ratio": 0.614,
      "put_oi": 48132.3,
      "total_oi_usd": 10392001049
    }
  ],
  "instruments": 886,
  "open_interest_unit": "BTC contracts (1 contract = 1 BTC)",
  "put_call_oi_ratio": 0.594,
  "sentiment": "call-heavy (bullish positioning)",
  "source": "Deribit public book summaries",
  "spot_usd": 82165.21,
  "top_strikes_by_oi": [
    {
      "distance_from_spot_pct": 15.6,
      "open_interest": 29774.5,
      "open_interest_usd": 2446428045,
      "strike": 95000
    },
    {
      "distance_from_spot_pct": 9.5,
      "open_interest": 26687.3,
      "open_interest_usd": 2192767609,
      "strike": 90000
    },
    {
      "distance_from_spot_pct": 21.7,
      "open_interest": 23706.4,
      "open_interest_usd": 1947841334,
      "strike": 100000
    },
    {
      "distance_from_spot_pct": -2.6,
      "open_interest": 22893.1,
      "open_interest_usd": 1881016369,
      "strike": 80000
    },
    {
      "distance_from_spot_pct": -14.8,
      "open_interest": 14916.9,
      "open_interest_usd": 1225650221,
      "strike": 70000
    }
  ],
  "total_open_interest_usd": 31064472090
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://saylorinnovations.com/api/crypto/options/deribit?currency=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://saylorinnovations.com/api/crypto/options/deribit?currency=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 $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
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 $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fsaylorinnovations.com%2Fapi%2Fcrypto%2Foptions%2Fderibit
const res = await pay("https://saylorinnovations.com/api/crypto/options/deribit?currency=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 $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://saylorinnovations.com/api/crypto/options/deribit?currency=BTC")
    print(res.status_code, res.text)