data.spencermcw.com

What is the sales tax rate at this US address, ZIP+4 or ZIP? The combined rate and each state, county, city and district rate in the 24 Streamlined Sales Tax states (WA, OH, MI, NJ, TN, …), computed by Distill from each state’s SST rate and boundary files. Updated quarterly. $0.005 per call (x402, USDC on Base); 3 free calls a day.

Open endpoint ↗

Price per call: $0.005
Chain: Base
Method: GET
Paid calls · 30 days: 7

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://data.spencermcw.com/v1/tax/sales-rate", { method: "GET" });
console.log(await res.json());

https://data.spencermcw.com/v1/tax/sales-rate