// get cURL resource
    $ch = curl_init();

    // set url
    curl_setopt($ch, CURLOPT_URL, 'https://www.rti-sms.com/api/sms');

    // set method
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');

    // return the transfer as a string
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

    // set headers
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Content-Type: application/json',
        'Authorization: Bearer ***** Hidden credentials *****',
    ]);

    // json body
    $json_array = [
        'recipients' => [
            '+56900000000'
        ],
        'message' => [
            'charset' => 0,
            'text' => 'libizon adikestr 85f0f569cb 1287c690e0'
        ],
        'sender' => '96000'
    ]; 
    $body = json_encode($json_array);

    // set body
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $body);

    // send the request and save response to $response
    $response = curl_exec($ch);

    // stop if fails
    if (!$response) {
        die('Error: "' . curl_error($ch) . '" - Code: ' . curl_errno($ch));
    }

    echo 'HTTP Status Code: ' . curl_getinfo($ch, CURLINFO_HTTP_CODE) . PHP_EOL;
    echo 'Response Body: ' . $response . PHP_EOL;

    // close curl resource to free up system resources 
    curl_close($ch);
                                    
                                

                                    
    # Install the Python Requests library:
    # `pip install requests`

    import requests
    import json


    def send_request():
        # Request
        # POST https://www.rti-sms.com/api/sms

        try:
            response = requests.post(
                url="https://www.rti-sms.com/api/sms",
                headers={
                    "Content-Type": "application/json",
                    "Authorization": "Bearer ***** Hidden credentials *****",
                },
                data=json.dumps({
                    "recipients": [
                        "+56900000000"
                    ],
                    "message": {
                        "charset": 0,
                        "text": "libizon adikestr 85f0f569cb 1287c690e0"
                    },
                    "sender": "96000"
                })
            )
            print('Response HTTP Status Code: {status_code}'.format(
                status_code=response.status_code))
            print('Response HTTP Response Body: {content}'.format(
                content=response.content))
        except requests.exceptions.RequestException:
            print('HTTP Request failed')

                                    
                                

                                    
    // Node.JS Example
    (function(callback) {
        'use strict';

        const httpTransport = require('https');
        const responseEncoding = 'utf8';
        const httpOptions = {
            hostname: 'www.rti-sms.com',
            port: '443',
            path: '/api/sms',
            method: 'POST',
            headers: {"Content-Type":"application/json","Authorization":"Bearer ***** Hidden credentials *****"}
        };
        httpOptions.headers['User-Agent'] = 'node ' + process.version;

        // Paw Store Cookies option is not supported

        const request = httpTransport.request(httpOptions, (res) => {
            let responseBufs = [];
            let responseStr = '';

            res.on('data', (chunk) => {
                if (Buffer.isBuffer(chunk)) {
                    responseBufs.push(chunk);
                }
                else {
                    responseStr = responseStr + chunk;            
                }
            }).on('end', () => {
                responseStr = responseBufs.length > 0 ? 
                    Buffer.concat(responseBufs).toString(responseEncoding) : responseStr;

                callback(null, res.statusCode, res.headers, responseStr);
            });

        })
        .setTimeout(0)
        .on('error', (error) => {
            callback(error);
        });
        request.write("{\"recipients\":[\"+56900000000\"],\"sender\":\"96000\",\"message\":{\"charset\":0,\"text\":\"libizon adikestr 85f0f569cb 1287c690e0\"}}")
        request.end();


    })((error, statusCode, headers, body) => {
        console.log('ERROR:', error); 
        console.log('STATUS:', statusCode);
        console.log('HEADERS:', JSON.stringify(headers));
        console.log('BODY:', body);
    });
                                    
                                

                                    
    import java.io.IOException;
    import org.apache.http.client.fluent.*;
    import org.apache.http.entity.ContentType;

    public class SendRequest
    {
        public static void main(String[] args) {
            sendRequest();
        }

        private static void sendRequest() {

            // Request (POST )

            try {

                // Create request
                Content content = Request.Post("https://www.rti-sms.com/api/sms")

                // Add headers
                .addHeader("Content-Type", "application/json")
                .addHeader("Authorization", "Bearer ***** Hidden credentials *****")

                // Add body
                .bodyString("{\"recipients\": [\"+56900000000\"],\"message\": {\"charset\": 0,\"text\": \"libizon adikestr 85f0f569cb 1287c690e0\"},\"sender\": \"96000\"}", ContentType.APPLICATION_JSON)

                // Fetch request and return content
                .execute().returnContent();

                // Print content
                System.out.println(content);
            }
            catch (IOException e) { System.out.println(e); }
        }
    }