Premiums

{
  "attribution": "Attribute to The Vault Report with a link to https://thevaultreport.com",
  "endpoint": "premiums",
  "generated_at": "2026-04-18T14:00:00Z",
  "license": "CC BY 4.0",
  "returned": 1,
  "rows": [
    {
      "as_of": "2026-04-18T14:00:00Z",
      "comex_ref_usd_per_oz": 3391.2,
      "contract": "au9999",
      "currency": "CNY",
      "ex_tax_premium_pct": 0.6,
      "gross_premium_pct": 13.6,
      "local_price": 790.5,
      "metal": "GOLD",
      "source": "sina_shfe",
      "tax_wedge_pct": 13,
      "unit": "gram",
      "usd_per_oz": 3412.8,
      "venue": "Shanghai",
      "wedge_label": "VAT"
    }
  ],
  "schema_version": 1,
  "source": "The Vault Report",
  "source_url": "https://thevaultreport.com"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://thevaultreport.com/api/x402/premiums?metal=gold'

# 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://thevaultreport.com/api/x402/premiums?metal=gold' \
  | 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fthevaultreport.com%2Fapi%2Fx402%2Fpremiums
const res = await pay("https://thevaultreport.com/api/x402/premiums?metal=gold");
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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://thevaultreport.com/api/x402/premiums?metal=gold")
    print(res.status_code, res.text)