curl "https://ssl.newsman.app/api/1.2/rest/your_user_id/your_api_key/sms.sendone.json?list_id=your-list-id&text=test+message&to=phone_number"

<?php
 
//client can de downloaded from https://github.com/Newsman/newsman-api-php
require_once("Newsman/Client.php");
 
// you can get your API KEY, your newsman_user_id and list_id from My account -> API
$newsman_user_id = "your-username";
$api_key = "your-api-key";
$list_id = "your-list-id";
$text = "test message";
$to = "phone_number";
 
try {
	$client = new Newsman_Client($newsman_user_id, $api_key);
	$ret = $client->sms->sendone($list_id, $text, $to);
} catch (Exception $e) {
	//do something with the error, eg: log $e->getMessage()
}
 
return $ret;
 
?>

import newsman
 
user_id = "your_user_id"
api_key = "your_api_key"
list_id = "your-list-id"
text = "test message"
to = "phone_number"
 
client = newsman.Newsman(user_id, api_key)
client.sms.sendone(list_id, text, to)

RESTClient client = new RESTClient("your_user_id", "your_api_key");
 
var _params = new NameValueCollection();
    _params["list_id"] = "your-list-id";
    _params["text"] = "test msg";
    _params["to"] = "phone_number";    
 
var response = client.CallMethod("sms", "sendone", _params);