api.strale.io · vat-validate

Validate a European VAT number against the VIES database. Returns company name, address, and validity. Caches results for 24 hours for instant responses on repeated lookups. Serves cached data when VIES is down.

Call it in 30 seconds

// npm i x402-fetch viem
import { wrapFetchWithPayment } from "x402-fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount(process.env.PRIVATE_KEY); // funds USDC on Base
const wallet = createWalletClient({ account, chain: base, transport: http() });
const fetchWithPay = wrapFetchWithPayment(fetch, wallet);

// Pays the $0.0216 USDC automatically on the 402, then returns the real response:
const res = await fetchWithPay("https://api.strale.io/x402/vat-validate", { method: "GET" });
console.log(await res.json());

# pip install x402 eth-account httpx
import os, asyncio
from eth_account import Account
from x402.clients.httpx import x402HttpxClient

account = Account.from_key(os.environ["PRIVATE_KEY"])  # funds USDC on Base

async def main():
    async with x402HttpxClient(account=account) as client:
        # x402 handles the 402 -> pay ($0.0216 USDC) -> retry automatically
        r = await client.get("https://api.strale.io/x402/vat-validate")
        print((await r.aread()).decode())

asyncio.run(main())

# 1) An unpaid request returns HTTP 402 with the exact payment terms:
curl -i "https://api.strale.io/x402/vat-validate?vat_number={'description': 'EU VAT number including country prefix (e.g. SE556703748501)', 'required': True, 'type': 'string'}"

# 2) Paying + retrying requires an x402 client that can sign the USDC
#    authorization (curl alone cannot). See the JS / Python tabs below.

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