SiteCheck

US HTS lines from the USITC HTS REST API: HTS number, description, general, special and column 2 rates, units and footnotes. Look up by number (hts, e.g. 8471.30) or search words (q; every word must appear in the description). Chapter 99 lines (extra duties such as Section 301 or 232) come back separately. A blank rate on a statistical line means the rate is set on its parent heading. Up to 25 lin

Open endpoint ↗

Price per call: $0.003
Chain: Base
Method: GET
Paid calls · 30 days: 2

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://api.sitecheck-api.workers.dev/api/tariff/us", { method: "GET" });
console.log(await res.json());

https://api.sitecheck-api.workers.dev/api/tariff/us