Tariff Us

{
  "additionalDuties": [
    {
      "column2Rate": null,
      "description": "Automatic data processing machines, of the type of which the constituent units are integrated in the same housing, whether finished or unfinished, which incorporate a microprocessor-based calculating mechanism, are capable of handling data words of at least 16-bits off the microprocessor, and are designed for use with a non-cathode-ray tube (non-CRT) display unit, whether or not capable of use without an external power source (provided for in subheading 8471.30 or 8471.41)",
      "footnotes": [
        "See chapter 99 statistical note 1."
      ],
      "generalRate": "100%",
      "htsNumber": "9903.41.15",
      "indent": 1,
      "specialRate": null,
      "units": []
    }
  ],
  "checkedAt": "2026-10-15T18:21:06.382Z",
  "count": 1,
  "disclaimer": "Information only, not legal advice. Verify with official sources.",
  "note": "additionalDuties are Chapter 99 lines that USITC returns with the search; check whether each applies to the goods and origin.",
  "query": {
    "hts": "8471.30"
  },
  "results": [
    {
      "column2Rate": "35%",
      "description": "Portable automatic data processing machines, weighing not more than 10 kg, consisting of at least a central processing unit, a keyboard and a display",
      "footnotes": [],
      "generalRate": "Free",
      "htsNumber": "8471.30.01.00",
      "indent": 1,
      "specialRate": null,
      "units": [
        "No."
      ]
    }
  ],
  "source": "USITC Harmonized Tariff Schedule REST API (hts.usitc.gov, public domain)"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/tariff/us?hts=8471.30&limit=5'

# 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://api.sitecheck-api.workers.dev/api/tariff/us?hts=8471.30&limit=5' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Ftariff%2Fus
const res = await pay("https://api.sitecheck-api.workers.dev/api/tariff/us?hts=8471.30&limit=5");
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/tariff/us?hts=8471.30&limit=5")
    print(res.status_code, res.text)