Twilio Node API Demo

node5md.js

// The Twilio Node library checks the environment variables
// 'TWILIO_ACCOUNT_SID' and 'TWILIO_AUTH_TOKEN' by default when instantiating a client object.
const client = require('twilio')();
const numbers = new Set()

client.messages.each({
  to: '+12019497446',
}, (message) => {
  if (!numbers.has(message.from)) {
    numbers.add(message.from);
    client.calls.create({
      to: message.from,
      from: '+12019497446',
      url: 'https://handler.twilio.com/twiml/EH458781dde69bba9ebb85cd93185098a7'
    })
    .then(call => console.log(call.sid));
  }
});