Overview
Ledger® Live is the flagship wallet application that connects users to their private keys stored on Ledger hardware devices. The Developer Portal provides SDKs, APIs, documentation, and best practices so you — as a developer, integrator, or designer — can build applications that interoperate with Ledger devices and Ledger Live with confidence.
This guide walks through essential concepts, setup instructions, sample code snippets, and UX/security recommendations. It is intended for developers who want to:
- Integrate Ledger-backed signing into web or desktop apps;
- Use the Ledger Live APIs for account synchronisation and transaction broadcasting;
- Design secure and user-friendly onboarding for hardware wallet users.
Who should read this?
Frontend and backend engineers, SDK maintainers, technical product managers, and designer-developer teams building crypto-native experiences should read this guide. A basic understanding of cryptography, wallets, and REST/WebSocket APIs will help you move faster.
Getting started — install & configuration
Prerequisites
Before integrating with Ledger Live or device APIs, ensure the following:
- You have a Ledger hardware device (Ledger Nano S Plus, Nano X, or other supported model).
- Ledger Live installed and up-to-date on your development machine.
- Node.js (LTS) and a modern browser for web integrations.
- Familiarity with command-line tooling and secure key-handling practices.
Install Ledger Live
Get Ledger Live for your platform and follow the official installer. Ledger Live manages the communication between your application and Ledger devices during development and testing.
# Example — link to download Ledger Live curl -LO https://www.ledger.com/ledger-live/download
Developer mode & USB permissions
On Linux, ensure udev rules or appropriate permissions to access USB devices. On macOS and Windows, follow platform-specific prompts to grant access. When using emulators or virtual devices, confirm that Ledger Live is configured to expose debug endpoints if available.
Developer tools & SDKs
Official SDKs
Ledger publishes libraries and SDKs that simplify application development. Popular packages include:
- @ledgerhq/hw-transport-node-hid – Node HID transport for desktop apps.
- @ledgerhq/hw-app-eth – Ethereum app helper for signing and address derivation.
- @ledgerhq/live-common – Shared utilities used by Ledger Live codebase.
Local development flow
A typical development flow looks like this:
- Install SDKs via npm or yarn.
- Connect the Ledger device and open the relevant app (e.g. Ethereum, Bitcoin).
- Use transport libraries to request addresses, sign transactions, and verify user confirmation on-device.
Minimal code example (JavaScript)
Notes
Always close transports when finished. When building a browser-based app, prefer the WebUSB/WebHID transports and prompt users with clear on-screen guidance to open the correct app on their device.
Security best practices
Ledger devices are designed so the private keys never leave the hardware. However, secure integration matters at every layer:
Protect the host environment
Assume hosts (user machines) may be compromised. Minimise exposed attack surfaces by avoiding unnecessary logging of sensitive data, using strict Content Security Policies for web apps, and signing binaries where possible.
Transaction transparency
Always let users verify transaction details on the device screen. Present condensed but precise information in your app: destination address, amount, fees, and any smart contract method names or parameters when applicable.
Key management
Never request the user to reveal their recovery phrase. If building account recovery flows, rely on standards like BIP39/BIP44 and clearly explain their security implications—preferably linking to official resources.
API examples & common patterns
Ledger Live exposes multiple integration points depending on the workflow: account discovery, balance sync, transaction signing, and broadcast. Below are common patterns.
1. Account discovery
Use derivation paths and coin-specific helpers to enumerate addresses. Cache results and re-check on-demand rather than polling aggressively.
2. Signing & user confirmation
When asking the device to sign a transaction, display the transaction payload in a human-readable format and instruct the user to verify details on their Ledger device screen. Example flow for Ethereum EIP-1559: prepare the payload, call the sign method, and broadcast the raw signed transaction.
Sample HTTP flow (server-assisted broadcast)
UX & designer guidance
Onboarding
Smooth onboarding reduces errors and support burden. Provide a clear checklist: backup seed phrase, device firmware up-to-date, open the correct app, and keep anti-phishing tips visible. Use microcopy to guide non-technical users through each step.
Visual confirmation patterns
Keep the most important transaction fields prominent and use consistent labeling. When a device prompt appears, display a preview modal in your app and ask users to confirm once the device shows the same details.
Accessibility
Ensure all screens are keyboard navigable and support screen readers. Provide text equivalents for on-device icons or gestures. Test high-contrast and large-text scenarios.
Integration checklist
Use this checklist before shipping an integration:
- Test with multiple Ledger hardware models.
- Validate address derivation across coins and paths.
- Confirm device prompts match app payloads.
- Perform end-to-end tests with testnets.
- Implement graceful fallback for unsupported coins/apps.
- Document required Ledger app versions for users.
Troubleshooting & common pitfalls
USB connection issues
Many issues stem from missing permissions, old drivers, or other wallet applications grabbing the device. Suggest restarting Ledger Live and the browser, checking USB cables, and confirming the device isn’t blocked by OS-level privacy settings.
App mismatch
If users attempt to sign an Ethereum transaction while the Bitcoin app is open on the device, the device will refuse. Your UX should detect this and prompt users to open the correct app.
Resources & further reading
Below are official resources, community hubs, and code repositories to help you go deeper. Bookmark these as you develop:
- Ledger Official Site
- Ledger Live
- Ledger Developers
- Ledger Documentation
- Ledger GitHub
- Ledger Support
- Ledger Blog
- Ledger Community
- Security Centre
- Ledger Live Download
Open-source projects
Explore Ledger’s GitHub for examples, transport implementations, and community tools. Contributing back helps everyone—consider raising reproducible issues and small PRs that improve docs or developer ergonomics.
Conclusion
Integrating with Ledger Live and Ledger hardware is a path to stronger security and user trust. By following best practices for device interactions, transaction transparency, and UX design, you can build applications that feel native, secure, and delightful for users who prioritise custody and safety.
Start small, test on public testnets, and iterate. The developer ecosystem around Ledger is supportive and growing — whether you’re building dApps, exchange tooling, or custodial onboarding flows, Ledger tools make secure key custody approachable.
Explore the Developer Portal