Ledger Live Integrations

Ledger Live integrations allow third‑party developers to embed their projects—blockchains, dApps, services—into the trusted Ledger ecosystem. By integrating with Ledger Live, apps can access hardware-backed signing, account discovery, and the security guarantees of the Ledger stack. :contentReference[oaicite:1]{index=1}

The integration empowers developers with:

• Secure transaction signing via Ledger devices (private keys never leave the device)
• Native exposure to millions of Ledger users in-app
• Trust validation via Ledger’s review & publishing process

Ledger offers a suite of SDKs and kits to make integration easier and more robust:

• Ledger Services Kit / Wallet API — for Live App integration and device communication via Ledger Live. :contentReference[oaicite:5]{index=5}
• Device Management Kit — for connecting, communicating, and managing hardware devices (USB, WebHID, Bluetooth). :contentReference[oaicite:6]{index=6}
• Simulator / Test SDK — use a simulator or “wallet-api-simulator” for development, testing flows without needing the physical device. :contentReference[oaicite:7]{index=7}

Here is a minimal example snippet to register a Live App via the SDK:

import { LedgerServicesClient } from '@ledgerhq/services‑kit-client';

async function registerApp() {
  const client = new LedgerServicesClient({ apiKey: process.env.MY_KEY });
  await client.registerLiveApp({ manifestUrl: 'https://mydapp.example/manifest.json' });
}
        

Security is central to any Ledger integration. Here are the foundational principles and best practices:

Core Principles

• Never allow private keys to leave the device; all signing must happen on‑device.
• Explicitly display human-readable transaction fields (amount, recipient, fees, memo) on the device before signing.
• Use deterministic derivation paths and avoid ad-hoc nonce or fee handling to prevent replay/replace issues. :contentReference[oaicite:8]{index=8}
• Validate all payloads and metadata on the host side—never trust blindly. :contentReference[oaicite:9]{index=9}

Testing & Audits

• Test thoroughly with simulators and testnets before going to production. :contentReference[oaicite:10]{index=10}
• Include UX tests to ensure the device prompts match expectations. :contentReference[oaicite:11]{index=11}
• Before public release, your integration must pass a security and functional audit (by Ledger or a Ledger‑partner). :contentReference[oaicite:12]{index=12}

Operational Controls

• Use TLS everywhere; sign and authenticate requests.
• Rate-limit and monitor signing endpoints to detect abuse.
• Log and audit signing activity, abnormal behavior alerts, user consent records.

1. Choose which integration type you want (Accounts, Live App, Service).
2. Read the relevant guide from Ledger Developer Portal. :contentReference[oaicite:13]{index=13}
3. Initialize your SDK, setup manifest (for Live Apps), or device app (for blockchain). :contentReference[oaicite:14]{index=14}
4. Test locally—use Ledger Live built from source or simulators to simulate flows. :contentReference[oaicite:15]{index=15}
5. Prepare deliverables: documentation, CI tests, install instructions. :contentReference[oaicite:16]{index=16}
6. Submit your integration to Ledger for review. :contentReference[oaicite:17]{index=17}
7. Iterate on feedback, fix issues, until your integration is approved & published. :contentReference[oaicite:18]{index=18}

Click the button and simulate connecting, discovering, and retrieving accounts.

Connect Ledger