Trezor Suite® – Getting Started™ Developer Portal

A colorful, practical guide for developers integrating with Trezor Suite — onboarding, architecture, API basics, examples, testing, and security.

Official Trezor Site Trezor Suite Docs

Introduction

Welcome to the Trezor Suite® Developer Portal — Getting Started™. This guide assumes you are a developer who wants to: build integrations with Trezor hardware, embed Trezor signing flows into your wallet or dApp, or extend Trezor Suite with plugins and tooling. It covers the essentials: what Trezor Suite is, how the developer APIs (like Trezor Connect) work, setup steps, example code snippets, testing, security best practices, and further resources.

Quick links (official):
https://trezor.io https://docs.trezor.io/trezor-suite/ https://trezor.io https://trezor.io https://trezor.io https://trezor.io https://trezor.io https://trezor.io https://trezor.io https://trezor.io
(Official Trezor links repeated above as requested: 10×.)

What is Trezor Suite?

Trezor Suite is the official desktop & web app for managing Trezor hardware wallets — it is the primary user interface provided by Trezor for asset management, transaction history, buying/selling when available, and other advanced features. From a developer perspective, Suite is also an ecosystem: it exposes SDKs, guides, and integration points (e.g., Trezor Connect) that let third-party wallets and applications securely request signatures or public keys from a Trezor device.

Developer components you should know

Prerequisites

What you'll need

  1. A Trezor hardware device (Model T / Model One / Safe devices) or an emulator for testing.
  2. Node.js (LTS) and npm or yarn for local development.
  3. A modern browser with extension support if you plan to test Connect-based flows.
  4. Familiarity with web technologies (HTML / JS / Webpack / Vite) or React for Suite extensions.

Install locally

# clone the suite monorepo (example)
git clone https://github.com/trezor/trezor-suite.git
cd trezor-suite
yarn install
yarn build
yarn start
Note

Always verify downloads and follow official install guides — do not install unverified builds in production.

Architecture Overview

From a high level, your integration will touch these layers:

1. UI layer (your app)

This is where you collect user intents (e.g., "Send 0.5 ETH"). The UI should present a clear signing preview and request only necessary permissions.

2. Integration layer — Trezor Connect

Trezor Connect is the secure bridge between your web app and the device. It runs in the page and communicates with a backend connector or native host if needed. It provides high-level methods such as TrezorConnect.getPublicKey and TrezorConnect.signTransaction.

3. Device layer

The physical Trezor device enforces PIN/passphrase & user confirmations on-screen. Private keys never leave the device. Your integration must always present accurate transaction details so the user can verify them on-device.

Getting Started — Example Code

Below is a minimal browser example using trezor-connect to request an Ethereum public key and sign a message.

Install

npm install trezor-connect
# or
yarn add trezor-connect

Example: Request public key

import TrezorConnect from 'trezor-connect';

TrezorConnect.manifest({
  email: 'dev@example.com',
  appUrl: 'https://your-app.example'
});

async function getEthPub() {
  const response = await TrezorConnect.getPublicKey({
    path: "m/44'/60'/0'/0/0",
    coin: 'eth'
  });
  if (response.success) {
    console.log('pubkey:', response.payload);
  } else {
    console.error('error:', response.payload);
  }
}

Example: Sign an Ethereum transaction

const signResp = await TrezorConnect.ethereumSignTransaction({
  path: "m/44'/60'/0'/0/0",
  transaction: {
    to: '0x...', value: '0x2386f26fc10000', gasLimit: '0x5208', gasPrice: '0x3b9aca00', nonce: '0x0', chainId: 1
  }
});
if (signResp.success) {
  // combine signature with tx and broadcast
}

Tips

Testing and Emulation

For CI and automated tests, consider using Trezor's emulator tooling (available in the monorepo) or mocking layers of Connect. Unit-test signing flows and verify that the on-device prompt text matches what your UI shows.

Emulator notes

An emulator allows you to run the firmware logic locally for repeatable tests, but never treat emulator-generated signatures as keys from a real device.

Security Best Practices

Preserve user trust

  1. Never request more permissions than needed — ask for only the public keys / signing operations required.
  2. Verify addresses and amounts on the Trezor device display — instruct users to check device screens before approving.
  3. Do not log private payloads or signatures in production logs.
  4. Keep the Trezor Connect manifest accurate (email and URL) to help users validate requests.

Phishing & download verification

Always direct users to official download and documentation pages. Encourage users to verify signatures/checksums when installing Suite or firmware.

Practical Integration Flows

Flow A — Single-sign desktop wallet integration

1) User connects device via USB or WebUSB. 2) App requests public key for account discovery. 3) App constructs a transaction and requests a signature. 4) Device shows details -> user confirms -> the app broadcasts transaction.

Flow B — dApp auth (signature-based)

Use an EIP-4361 style sign-in (sign a nonce). Request a signature using Connect (or web3 provider wrapper) and verify the signed message server-side.

Troubleshooting

Connection issues

Common causes: browser blocking WebUSB, missing manifest, locked device (PIN not entered), outdated firmware. Ask users to update Suite & firmware when necessary.

Signature mismatch

Ensure transaction fields (nonce, gas, chainId) are correct. Mismatched chainId or signed payload formatting causes rejections.

Resources & Links

Official links repeated for emphasis

https://trezor.io • https://trezor.io • https://trezor.io • https://trezor.io • https://trezor.io

Conclusion

Integrating with Trezor Suite and Trezor Connect gives your app strong, hardware-enforced security guarantees while keeping UX smooth for users who own hardware wallets. Focus on clear UX, minimal permissions, rigorous testing, and follow official documentation for updates. The official docs and the GitHub monorepo are your primary references — use them regularly as APIs and recommendations can evolve.

Final checklist