Introduction
Welcome to the Trezor Suite Developer Portal — your single-point reference for integrating hardware-backed key management and transaction signing into apps, wallets, and services. This guide walks you from the first connection (discovering the Trezor device) to advanced topics like signing transactions, handling passphrases, and contributing to the Trezor Suite codebase. Each section uses progressive headings (H1–H5) so you can reuse this HTML as a slide, a printable handout, or a web article.
Why trust matters
Hardware wallets are trusted roots for users' digital assets. Trust isn't automatic — it's earned through transparent code, deterministic signing algorithms, reproducible builds, and clear user flows. Trezor follows established security practices and publishes source code and documentation to enable independent review. As a developer, your responsibility is to preserve that trust by integrating securely and signalling to users when the hardware is engaged.
Starter checklist
- Read the official developer docs and Trezor Connect API reference.
- Use the official Trezor Suite or the published SDKs; avoid third‑party forks without audits.
- Validate device firmware and Suite build signatures for production integrations.
- Design UX that clearly shows when a device prompt occurs—never assume signing happened silently.
Core concepts (H2)
Device discovery & connection (H4)
Trezor devices connect via USB or WebUSB for browsers, or native transport in desktop apps. Use the official Trezor Connect library to abstract transports and to keep the integration compatible with Suite and other apps. Always surface device connection states to users and handle disconnects gracefully.
Key derivation & account management (H4)
Private keys never leave the device. Your app will request public keys and addresses (XPUB) and delegate signing requests to the device. Follow BIP‑32/BIP‑44 derivation standards, and allow users to verify addresses on the device display when required.
Transaction creation & signing (H4)
Construct transactions client-side (or server-side for UX reasons) and use the Connect API to ask the device to sign. Present a readable transaction summary before requesting the signature — this preserves user consent and defends against UI spoofing attacks.
Advanced topics
Passphrase handling (H5)
Trezor supports optional passphrase-protected hidden wallets. Treat passphrases as sensitive: never log them, never transmit them to your servers, and explain clearly to users how a lost passphrase affects recovery.
Multisig and contributors (H5)
Trezor Suite supports multisignature setups. If your project involves multisig, reference the Suite docs and the monorepo for examples and test vectors. Consider contributing improvements back to the codebase — it strengthens the whole ecosystem.
Developer workflow & code snippets
Below are small snippets and UX suggestions you can reuse. These are intentionally simple — consult the official SDK docs for full endpoints and options.
// Example: request public key (pseudocode)
const response = await TrezorConnect.getPublicKey({
path: "m/44'/0'/0'",
coin: 'Bitcoin'
});
if(response.success){
display(response.payload.xpub);
}
For production, always use the official package releases and pin dependency versions. Enable automated tests that include device emulators or CI hooks against the Suite test harness where available.
Design patterns for trust
Clear affordances (H4)
Signal clearly when a device is needed: show a persistent header or modal that documents the device state and when a physical confirmation is awaited. Use strong, consistent language like "Confirm on your Trezor device".
Failure & recovery (H4)
Implement retries and clear error messages for USB errors, firmware mismatches, or transport timeouts. Offer users the ability to export logs while redacting secrets so you can triage issues without compromising safety.
Contribution & community
Trezor is open source — engage via GitHub issues and pull requests. Before opening a PR, run the project's tests locally and follow the contribution guidelines in the monorepo README. Small docs fixes, UX improvements, and reproducible build documentation are highly welcome.
Closing summary
Integrating with Trezor Suite offers robust, hardware-backed security for user assets. Respect device constraints, surface clear UX for confirmations, and rely on official libraries and docs. The links panel contains direct references to official resources you should bookmark.