Initialize the Client and Variables

In this step, we will intialize the Vonage Client with some credentials and initialize some variables that will be needed later.

Key	Description
VONAGE_NUMBER	The phone number you are sending the message from. This is the number rented from Vonage when setting up the application.
TO_NUMBER	The phone number you are sending the message to.

Note: If your account is in the trial period, the TO_NUMBER can only be the phone number that you used to create the account. Also, don’t use a leading + or 00 when entering a phone number, start with the country code, for example 447700900000. This is the E.164 number format.

Copy this code into send-sms.js

const { Vonage } = require('@vonage/server-sdk');
const { SMS } = require('@vonage/messages');

const TO_NUMBER = ''
const VONAGE_NUMBER = process.env.VONAGE_NUMBER;

const vonage = new Vonage({
  apiKey: process.env.VONAGE_API_KEY,
  apiSecret: process.env.VONAGE_API_SECRET,
  applicationId: process.env.VONAGE_APPLICATION_ID,
  privateKey: process.env.VONAGE_PRIVATE_KEY,
});

Update TO_NUMBER with the number you want to send an SMS to. The environment variables that are being used have been auto populated for you, you can view them in the .env file.