Introduction
Ledger Live allows developers to build and run apps that integrate securely with Ledger hardware wallets. This tutorial walks through the full development lifecycle.
Requirements
- Ledger device (Nano S / Nano X)
- Ledger Live installed and updated
- Node.js and npm installed
- Basic JavaScript and command-line knowledge
- Secure development environment
Environment Setup
- Open Ledger Live and ensure firmware is up-to-date
- Install Ledger SDKs and dependencies using npm
- Initialize a new project folder and package.json
- Connect your Ledger device via USB and authorize the connection
Building the App
- Create the main application script
- Use the Ledger API to communicate with the device
- Implement transaction signing and verification
- Handle user inputs and display results securely
Deploy & Test
- Run the application locally and verify Ledger communication
- Test signing multiple transactions
- Debug any errors or issues using console logs
- Ensure all sensitive keys remain on the Ledger device
FAQ
Can I build multiple apps simultaneously?
Yes, each app can be built in separate directories with independent Ledger Live connections.
Is Ledger Live safe for development?
Yes, Ledger Live ensures transactions and keys are always handled on the secure hardware device.