Twilio has developed a new Command Line Interface (CLI) tool, which is now in Beta. The CLI allows developers to interact with Twilio's API and services from their command prompt or terminal, providing a more convenient and powerful way to manage phone numbers, messages, and other features. The CLI is open-sourced and can be installed on various platforms, including Mac OS, Windows, and Linux. It also includes a serverless API, which enables developers to build and deploy applications without worrying about the underlying infrastructure. The CLI tool is designed to simplify the experience for developers, making it easier to automate tasks and integrate with other tools and services.