curl --request POST \
  --url https://api.avatcado.com/v1/validate/batch \
  --header 'Content-Type: application/json' \
  --data '
{
  "vat_numbers": [
    "NL123456789B01",
    "DE987654321",
    "GB123456789",
    "CHE123456789MWST",
    "NO123456789MVA",
    "AU51824753556"
  ],
  "requester_vat_number": "DE987654321",
  "cache": true,
  "fallback": true
}
'

import requests

url = "https://api.avatcado.com/v1/validate/batch"

payload = {
    "vat_numbers": ["NL123456789B01", "DE987654321", "GB123456789", "CHE123456789MWST", "NO123456789MVA", "AU51824753556"],
    "requester_vat_number": "DE987654321",
    "cache": True,
    "fallback": True
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    vat_numbers: [
      'NL123456789B01',
      'DE987654321',
      'GB123456789',
      'CHE123456789MWST',
      'NO123456789MVA',
      'AU51824753556'
    ],
    requester_vat_number: 'DE987654321',
    cache: true,
    fallback: true
  })
};

fetch('https://api.avatcado.com/v1/validate/batch', 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.avatcado.com/v1/validate/batch",
  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([
    'vat_numbers' => [
        'NL123456789B01',
        'DE987654321',
        'GB123456789',
        'CHE123456789MWST',
        'NO123456789MVA',
        'AU51824753556'
    ],
    'requester_vat_number' => 'DE987654321',
    'cache' => true,
    'fallback' => true
  ]),
  CURLOPT_HTTPHEADER => [
    "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.avatcado.com/v1/validate/batch"

	payload := strings.NewReader("{\n  \"vat_numbers\": [\n    \"NL123456789B01\",\n    \"DE987654321\",\n    \"GB123456789\",\n    \"CHE123456789MWST\",\n    \"NO123456789MVA\",\n    \"AU51824753556\"\n  ],\n  \"requester_vat_number\": \"DE987654321\",\n  \"cache\": true,\n  \"fallback\": true\n}")

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

	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.avatcado.com/v1/validate/batch")
  .header("Content-Type", "application/json")
  .body("{\n  \"vat_numbers\": [\n    \"NL123456789B01\",\n    \"DE987654321\",\n    \"GB123456789\",\n    \"CHE123456789MWST\",\n    \"NO123456789MVA\",\n    \"AU51824753556\"\n  ],\n  \"requester_vat_number\": \"DE987654321\",\n  \"cache\": true,\n  \"fallback\": true\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.avatcado.com/v1/validate/batch")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"vat_numbers\": [\n    \"NL123456789B01\",\n    \"DE987654321\",\n    \"GB123456789\",\n    \"CHE123456789MWST\",\n    \"NO123456789MVA\",\n    \"AU51824753556\"\n  ],\n  \"requester_vat_number\": \"DE987654321\",\n  \"cache\": true,\n  \"fallback\": true\n}"

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

{
  "data": {
    "results": [
      {
        "data": {
          "valid": true,
          "vat_number": "NL123456789B01",
          "country_code": "NL",
          "company": {
            "name": "Acme B.V.",
            "address": "Keizersgracht 123, Amsterdam"
          },
          "requested_at": "2026-03-06T12:00:00.000Z",
          "consultation_number": "WAPIAAAAA1BBB2"
        },
        "meta": {
          "source": "vies",
          "source_status": "live",
          "cached": true,
          "stale": true,
          "cached_at": "<string>"
        }
      }
    ],
    "summary": {
      "total": 3,
      "succeeded": 2,
      "failed": 1
    }
  },
  "meta": {
    "request_id": "550e8400-e29b-41d4-a716-446655440000",
    "mode": "test",
    "request_duration_ms": 120
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "Missing or invalid API key",
    "docs_url": "https://docs.avatcado.com/errors/unauthorized"
  },
  "meta": {
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "tier_insufficient",
    "message": "Batch validation requires a Pro or Business plan",
    "docs_url": "https://docs.avatcado.com/errors/tier_insufficient"
  },
  "meta": {
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "validation_error",
    "message": "At least one VAT number is required",
    "docs_url": "https://docs.avatcado.com/errors/validation_error"
  },
  "meta": {
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "rate_limit_exceeded",
    "message": "Monthly validation limit exceeded",
    "docs_url": "https://docs.avatcado.com/errors/rate_limit_exceeded",
    "vat_number": "DE123456789"
  },
  "meta": {
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}