Commodity

{
  "commodity": "natural-gas",
  "futures_basis": {
    "carry_trade_angle": "Storage economics: if contango > storage + financing cost, buying spot and selling futures is profitable",
    "contango_or_backwardation": "contango",
    "front_month_vs_next": -0.15
  },
  "global_context": "LNG arbitrage between Henry Hub and Asian JKM represents one of the largest persistent cross-market spreads in commodities. Retail access via UNG (US gas ETF) / JNK hedges or gas producer equities.",
  "key_arb_players": [
    "Shell",
    "TotalEnergies",
    "BP",
    "Vitol",
    "Trafigura",
    "Gunvor"
  ],
  "price_differentials": [
    {
      "blocking_factors": [
        "Requires LNG tanker and liquefaction capacity",
        "Locked by long-term contracts — spot LNG limited"
      ],
      "gross_spread_pct": 349.1,
      "gross_spread_usd": 9.95,
      "net_arb_pct": 219.3,
      "net_arb_usd": 6.25,
      "opportunity_window": "3-6 months for spot LNG cargo setup",
      "other_costs_usd": 1.2,
      "route": "US Gulf Coast → Northeast Asia (LNG)",
      "tariff_cost_usd": 0,
      "transport_cost_usd": 2.5,
      "viable": true
    }
  ],
  "pulse_suggestions": [],
  "regional_price_matrix": [
    {
      "benchmark": "Henry Hub",
      "country_examples": [
        "USA"
      ],
      "data_freshness": "news-derived (2026-06-05)",
      "price_unit": "$/MMBtu",
      "price_usd": 2.85,
      "region": "US Gulf Coast"
    },
    {
      "benchmark": "TTF Hub",
      "country_examples": [
        "Netherlands",
        "Germany",
        "UK"
      ],
      "data_freshness": "news-derived (2026-06-04)",
      "price_unit": "$/MMBtu",
      "price_usd": 10.4,
      "region": "Northwest Europe"
    },
    {
      "benchmark": "JKM Spot",
      "country_examples": [
        "Japan",
        "South Korea",
        "China"
      ],
      "data_freshness": "unavailable",
      "price_unit": "$/MMBtu",
      "price_usd": null,
      "region": "Northeast Asia"
    }
  ],
  "retail_accessibility": "ETF/futures only",
  "scan_time": "2026-06-06T12:00:00Z",
  "seasonal_patterns": "US gas peaks Dec-Feb (heating) and July (cooling). European TTF typically highest Nov-Mar. Asian LNG peaks Jan for heating, Jun-Aug for cooling.",
  "trade_flow_context": "US LNG exports at record levels. EU has replaced ~70% of Russian pipeline gas with LNG. JKM premium over TTF has compressed to lowest in 2 years."
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://arbipulse.theaslangroupllc.com/api/commodity?commodity=natural-gas&unit=auto'

# 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://arbipulse.theaslangroupllc.com/api/commodity?commodity=natural-gas&unit=auto' \
  | 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 $0.1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.1" });
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 $0.1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Farbipulse.theaslangroupllc.com%2Fapi%2Fcommodity
const res = await pay("https://arbipulse.theaslangroupllc.com/api/commodity?commodity=natural-gas&unit=auto");
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 $0.1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.1"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://arbipulse.theaslangroupllc.com/api/commodity?commodity=natural-gas&unit=auto")
    print(res.status_code, res.text)