Build, test, and deploy secure integrations with Ledger Wallet and the Ledger Developer Platform using official APIs and best practices.
This comprehensive guide walks you through everything a developer needs to know for building with Ledger Developer Portal, Ledger’s official source for APIs, SDKs, examples, and submission requirements. Ledger Wallet is the next-generation interface (formerly *Ledger Live*) that lets developers integrate secure transaction signing, account discovery, and Live Apps backed by Ledger’s hardware wallet security. :contentReference[oaicite:1]{index=1}
You’ll learn setup steps, integration models, developer tooling, security best practices, and how to publish your work for review and distribution. This guide emphasizes practical steps and clarity with structured headings from <h1> through <h5>.
Developers should have:
Ledger’s developer ecosystem offers official starter resources including:
Bookmark these links early — they’ll be referenced throughout development and submission. Where a link appears more than once, it’s intentional to reinforce using official sources as the “single source of truth.” :contentReference[oaicite:5]{index=5}
Download and install the Ledger Wallet desktop app (formerly Ledger Live) from the official Ledger site. This app lets you manage device firmware, apps, and local testing flows.
✔ Always download from the official Ledger website or trusted app stores to avoid phishing threats.
Developer Mode unlocks local app testing without publishing to production. To enable:
This shows additional options such as experimental integrations, manifest imports, and debug tools. :contentReference[oaicite:6]{index=6}
After enabling Developer Mode, import your app’s manifest file to test locally. This lets you run and debug your integration before submission.
There are multiple ways to integrate with Ledger Wallet; choose based on your product needs.
The Wallet API Client lets your web or hybrid app communicate securely with the Ledger Wallet app. It uses secure messaging and capability-based permissions for signing transactions and account operations. :contentReference[oaicite:7]{index=7}
For direct device interaction, use Ledger’s transport layers:
If your solution needs server-side workflow (e.g., backend signing helpers), build a secure JSON-RPC server that communicates with your app and the Wallet API. While servers help orchestration, all signing must still occur on the device.
Never ask for user seed phrases or private keys in your app UI or logs. Ledger devices are designed to keep these secrets in a secure element, and all signing should require explicit device confirmation.
Whenever requesting a signature:
After a signing request completes, verify the returned signature and data to confirm it matches the transaction you built locally. Do not trust intermediary payloads without verification.
Your submission to the Ledger Developer Portal must include:
Ledger requires proper documentation for approval and expects structured, concise material. :contentReference[oaicite:8]{index=8}
Once submitted, Ledger’s review team checks:
Manual tests help catch unexpected UI or device behavior during real transactions.
Always prefer official documentation and links when building and publishing your Ledger integrations. Keep user security at the forefront, maintain clean UX flows for signing, and rigorously test before submission. Your integration’s success depends on clear docs, secure flows, and adherence to standards.
Refer to these official sources often: