WeAreDevelopers World Congress 2025

Workshop's Backend Server

Prerequisites

• Node.js (version 18.x or higher recommended)
• npm (comes with Node.js)
• (Optional) Git for cloning the repository

Setting up Environment Variables

1. Copy the example environment file (if provided) or create a new .env file in the project root.
2. Add the required environment variables. Example:

BACKEND_URL=http://localhost:3000
API_GATEWAY=https://api.nexmo.com
API_GATEWAY_OAUTH=https://api-eu-3.vonage.com
API_GATEWAY_NETWORK_APIS=https://api-eu.vonage.com
API_KEY=<yours from the Vonage API Dashboard>
API_SECRET=<yours from the Vonage API Dashboard>
API_JWT=<your JWT token>
NV_SCOPE="dpv:FraudPreventionAndDetection#number-verification-verify-read"

• You can generate a pair of public and private keys for your application on the Vonage dashboard, and then use Vonage's JWT Generator to create a JWT token.
• The Number Verification API requires the dpv:FraudPreventionAndDetection#number-verification-verify-read scope to be set in the VITE_NV_SCOPE variable, following the CAMARA standard scope.

3. Save the .env file.

Running the Server

1. Install dependencies:

   npm install
   

2. Start the server in development mode (with automatic restarts on file changes):

   npm run dev
   

3. The Express server should now be running at http://localhost:<PORT> (default port is 3000 unless overridden in .env as PORT of BACKEND_URL if this matches the format :).

License

This project is licensed under the Apache License - see the LICENSE file for details.

Other resources

Check the workshop's full project, abstract and other repos at Workshop: "Integrating Open Gateway in your application to shift to a better sign-up experience".