ToolVet
80trust / 100

Validate Tax Id

by Toolrail in Markets & finance

x402 APIPassing, checked 26 min ago

Validate the format and supported check-digit rules of tax IDs across Latin America and Spain: Chile RUT, Argentina CUIT/CUIL, Brazil CPF/CNPJ, Mexico RFC, Peru RUC, Colombia NIT, Spain NIF/NIE. Does not verify identity or registration with a tax authority. Use when checking a Latin American or Spanish tax ID's format before saving a customer or an invoice.

POST https://toolrail.dev/validate/tax-id

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
256 ms typical, 640 ms slowest 5%
Last check
26 min ago
Next check
in 3 min

How to call it

POST https://toolrail.dev/validate/tax-id

Each call costs $0.002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://toolrail.dev/validate/tax-id
content-type: application/json

{
  "country": "BR",
  "id": "529.982.247-25"
}

Parameters

ParameterTypeRequiredDescription
countrystringNo
idstringNo

Example response

The provider's example. We can't check it without paying.

{
  "country": "BR",
  "formatted": "529.982.247-25",
  "id": "529.982.247-25",
  "type": "CPF",
  "valid": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://toolrail.dev/validate/tax-id' \
  -H 'content-type: application/json' \
  --data-raw '{"country":"BR","id":"529.982.247-25"}'

# 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 - -X POST 'https://toolrail.dev/validate/tax-id' \
  -H 'content-type: application/json' \
  --data-raw '{"country":"BR","id":"529.982.247-25"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftoolrail.dev%2Fvalidate%2Ftax-id&method=POST
const res = await pay("https://toolrail.dev/validate/tax-id", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "country": "BR",
    "id": "529.982.247-25"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://toolrail.dev/validate/tax-id",
        json={
            "country": "BR",
            "id": "529.982.247-25",
        },
    )
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

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