curl --request POST \
  --url https://api.ezapi.com.br/instances/{instanceId}/token/{instanceToken}/phone-exists-batch \
  --header 'Client-Token: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "phones": [
    "{{PHONE}}",
    "{{PHONE}}"
  ]
}
'

import requests

url = "https://api.ezapi.com.br/instances/{instanceId}/token/{instanceToken}/phone-exists-batch"

payload = { "phones": ["{{PHONE}}", "{{PHONE}}"] }
headers = {
    "Client-Token": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Client-Token': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({phones: ['{{PHONE}}', '{{PHONE}}']})
};

fetch('https://api.ezapi.com.br/instances/{instanceId}/token/{instanceToken}/phone-exists-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.ezapi.com.br/instances/{instanceId}/token/{instanceToken}/phone-exists-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([
    'phones' => [
        '{{PHONE}}',
        '{{PHONE}}'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Client-Token: <api-key>",
    "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.ezapi.com.br/instances/{instanceId}/token/{instanceToken}/phone-exists-batch"

	payload := strings.NewReader("{\n  \"phones\": [\n    \"{{PHONE}}\",\n    \"{{PHONE}}\"\n  ]\n}")

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

	req.Header.Add("Client-Token", "<api-key>")
	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.ezapi.com.br/instances/{instanceId}/token/{instanceToken}/phone-exists-batch")
  .header("Client-Token", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"phones\": [\n    \"{{PHONE}}\",\n    \"{{PHONE}}\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.ezapi.com.br/instances/{instanceId}/token/{instanceToken}/phone-exists-batch")

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

request = Net::HTTP::Post.new(url)
request["Client-Token"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"phones\": [\n    \"{{PHONE}}\",\n    \"{{PHONE}}\"\n  ]\n}"

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

[
  {
    "exists": true,
    "inputPhone": "5511999999999",
    "outputPhone": "5511999999999",
    "lid": null
  },
  {
    "exists": false,
    "inputPhone": "5511888888888",
    "outputPhone": "5511888888888",
    "lid": null
  }
]

{
  "error": "Unauthorized",
  "message": "Invalid instanceToken"
}

{
  "error": "Instance not found"
}

{
  "error": "Worker command timeout"
}

{
  "error": "Unable to process request"
}