curl --request POST \
  --url https://api.finseed.es/v1/tax_ids/validate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "tax_id": "B12345678",
  "name": "ACME, S.L.",
  "country": "ES"
}
'

import requests

url = "https://api.finseed.es/v1/tax_ids/validate"

payload = {
    "tax_id": "B12345678",
    "name": "ACME, S.L.",
    "country": "ES"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({tax_id: 'B12345678', name: 'ACME, S.L.', country: 'ES'})
};

fetch('https://api.finseed.es/v1/tax_ids/validate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.finseed.es/v1/tax_ids/validate",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'tax_id' => 'B12345678',
    'name' => 'ACME, S.L.',
    'country' => 'ES'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.finseed.es/v1/tax_ids/validate"

	payload := strings.NewReader("{\n  \"tax_id\": \"B12345678\",\n  \"name\": \"ACME, S.L.\",\n  \"country\": \"ES\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.finseed.es/v1/tax_ids/validate")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"tax_id\": \"B12345678\",\n  \"name\": \"ACME, S.L.\",\n  \"country\": \"ES\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.finseed.es/v1/tax_ids/validate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"tax_id\": \"B12345678\",\n  \"name\": \"ACME, S.L.\",\n  \"country\": \"ES\"\n}"

response = http.request(request)
puts response.read_body

{
  "valid": true,
  "definitive": true,
  "normalized_tax_id": "B12345678",
  "tax_id_type": "es_nif",
  "tax_id_country": "ES",
  "error_code": "not_registered_or_name_mismatch",
  "error_message": null,
  "end_user_message": null
}

{
  "code": "invalid_request",
  "detail": "The request is not valid. A parameter is missing, malformed, or out of range. See the `errors` array for the fields that failed.",
  "errors": [],
  "doc_url": "https://www.finseed.es/docs/api-reference/errors#invalid_request"
}

{
  "code": "unauthorized",
  "detail": "Authentication failed. Send your API key as a bearer token in the `Authorization` header. Keys are scoped to one environment, so a test key cannot read live data and vice versa.",
  "errors": [],
  "doc_url": "https://www.finseed.es/docs/api-reference/errors#unauthorized"
}

{
  "code": "rate_limited",
  "detail": "Too many requests for this endpoint with this API key. Wait for the interval in the Retry-After header and try again.",
  "errors": [],
  "doc_url": "https://www.finseed.es/docs/api-reference/errors#rate_limited"
}

{
  "code": "internal_error",
  "detail": "Something went wrong on our side. The request did not complete and can be retried safely.",
  "errors": [],
  "doc_url": "https://www.finseed.es/docs/api-reference/errors#internal_error"
}