Project 1: Hello World — Your First Voice App with Jovo
Every great voice app starts with Hello World. In this first project, you'll set up the Jovo development environment and build a minimal app that responds to a launch request across both Alexa and Google Assistant — from a single codebase.
What you'll build
- ✓ A working Hello World voice app on Alexa & Google Assistant
- ✓ Project structure you'll use for every future Jovo app
- ✓ Your first LAUNCH handler returning a spoken response
- ✓ Local testing via the Jovo Debugger
Step 1: Install the Jovo CLI
The Jovo CLI is your main tool for scaffolding and running voice projects:
$ npm install -g @jovotech/cli
$ jovo --version
Step 2: Create the Hello World Project
Scaffold a new project with the default template, which includes both Alexa and Google Assistant support:
$ jovo new hello-world
$ cd hello-world
Step 3: Your First Handler
Open src/components/GlobalComponent.ts. The LAUNCH handler runs when a user opens your skill or action:
LAUNCH() {
return this.$send({ message: 'Hello World! Welcome to your first Jovo app.' });
}
Step 4: Run Locally
$ jovo run
✓ Local dev server running on port 3000
Use the Jovo Debugger to send a LAUNCH request and hear your Hello World response in the browser.