curl -X GET "https://api.mycentralino.com/v1/contacts?page=1&limit=200&search=rossi" \
  -H "X-API-KEY: sk_mycentralino_your_api_key"

<?php
$params = http_build_query(['page' => 1, 'limit' => 200, 'search' => 'rossi']);
$ch = curl_init("https://api.mycentralino.com/v1/contacts?{$params}");
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'X-API-KEY: sk_mycentralino_your_api_key'
    ]
]);

$response = curl_exec($ch);
curl_close($ch);

print_r(json_decode($response, true));

import requests

headers = {'X-API-KEY': 'sk_mycentralino_your_api_key'}
params = {'page': 1, 'limit': 200, 'search': 'rossi'}

response = requests.get(
    'https://api.mycentralino.com/v1/contacts',
    headers=headers,
    params=params
)
print(response.json())