Trezor Suite® – Getting Started™ Developer Portal

Overview

Welcome to the Trezor Suite® Getting Started Developer Portal. This guide is written for developers who want to build or integrate with Trezor hardware wallets using the Trezor Suite ecosystem. Whether you are developing a browser extension, desktop integration, or a server-side signing flow, this portal provides step-by-step instructions, code examples, recommended libraries, and security best practices.

What you'll learn

By the end of this guide you will be able to:

• Understand the architecture of Trezor Suite and how your app can communicate with it.
• Use the Trezor Connect / Suite APIs and SDKs for account discovery, transaction signing, and firmware checks.
• Implement secure integrations using recommended cryptographic workflows.
• Follow UX and accessibility best practices for wallet integrations.

Prerequisites

Before you begin, make sure you have the following installed and ready:

1. Node.js LTS (14+ recommended) and npm/yarn.
2. Access to a Trezor hardware device (Trezor Model T or Trezor One) with up-to-date firmware.
3. Basic familiarity with JavaScript/TypeScript, HTTP, and cryptographic primitives (signing, key derivation).
4. A development environment for browser or desktop apps (e.g., Chrome, Electron).

Security note

Never transmit private keys or seed phrases to your servers. Trezor devices keep private keys secure in hardware — your app should only send signing requests and read public data. Always validate firmware versions, check fingerprinting, and require user confirmation for sensitive actions.

Architecture & Core Concepts

Trezor Suite acts as the user-facing application that communicates with the physical Trezor device. Integrations typically use a bridge or a direct USB/WebUSB connection to the device. Here are the core building blocks:

SDKs & Libraries

Choose the SDK that matches your platform. Below are recommended libraries and short examples to get started quickly.

Trezor Connect (Web)

Trezor Connect is the easiest way to add hardware wallet support to a web app. It provides a safe, hosted UI and a simple API surface.

// Install
npm install trezor-connect

// Example: request public key
import TrezorConnect from 'trezor-connect';

TrezorConnect.getPublicKey({
  path: "m/44'/0'/0'/0/0",
}).then(response => console.log(response));

Node & Desktop

For desktop applications (Electron) or server-side helpers that only orchestrate (never hold private keys), use the official bindings and keep signing on the device.

Mobile

Mobile integrations commonly rely on a Bridge or WebUSB polyfill. Focus on pairing flows, connection stability, and on-device confirmations for mobile UX.

API Reference (Core)

Below are the most used methods. Integrate these with clear UI flows and robust error handling.

getPublicKey

Returns a public key for a given derivation path. Use this for account discovery and address generation.

getAddress

Retrieve and optionally confirm an address on the device. Always show the address string and a QR code for user verification.

signTransaction

Send a structured transaction to the device for user confirmation and signature. Return the signature to the app for broadcasting.

Error patterns

Handle common errors: connection lost, user rejected, device busy, firmware incompatible. Provide actionable messages and retry hints.

Examples & Quickstart Projects

Here are curated examples you can clone to start building:

• Web Wallet Starter — Integrate Trezor Connect into a React app with account discovery and send flow.
• Electron Signer — Desktop signing helper that coordinates QR-based broadcasting.
• Multicoin Demo — Showcases BTC, ETH, and other asset signing across one UI.

Sample: Simple Send (pseudo)

async function sendTx(unsignedTxHex, path){
  const response = await TrezorConnect.signTransaction({
    path,
    transaction: unsignedTxHex
  });
  if(response.success) return response.payload;
  throw new Error(response.payload.error || 'Signing failed');
}

Each example in the portal contains step-by-step instructions and runnable code. Fork or clone to iterate quickly.

Best Practices & UX Guidelines

Ask for minimal permissions

Request only what you need. Avoid asking for wide scopes that could confuse or scare users.

Clear transaction details

Show human-readable details (amount, fees, recipient) and let the user confirm them on a separate screen before sending to the device.

Accessibility

Support keyboard navigation and screen readers. Provide text alternatives for QR codes and images, and ensure color contrast meets WCAG standards.

Security Checklist

1. Always check firmware version and encourage updates.
2. Use secure transport (HTTPS, secure websockets).
3. Never log sensitive payloads (xprivs, seeds).
4. Use deterministic replay protection and nonce management where applicable.
5. Conduct threat modelling and independent audits for production apps.

Conclusion

Integrating with Trezor Suite is a powerful way to provide users with hardware-backed security. By following this guide, using official SDKs, and respecting security and UX best practices, you can deliver a wallet experience that is both delightful and secure.

Explore the rest of the Developer Portal for full API docs, downloadable SDKs, and community resources.