Introduction — why integrate with Trezor Suite
Trezor Suite gives developers a secure and user-friendly bridge to hardware wallets. When you build integrations with Trezor Suite, your app can request signatures, verify addresses on-device, and let users sign transactions without exposing private keys. This Developer Portal helps you quickly get started with Trezor Suite integration, from the first API call to production-ready signing flows. If you're building Web3 dApps, custodial services, payment systems, or tooling for advanced users, Trezor Suite developer tools let you combine strong security with modern UX.
What you’ll find in this Getting Started guide
- Download and environment setup for Trezor Suite SDK and CLI
- Quick code examples: connect, request public keys, and sign transactions
- Security best practices for passphrase handling, recovery, and user flows
- Testing and sandbox recommendations for rapid, safe development
- FAQ and common integration pitfalls
Quick start — setup in under 10 minutes
Follow these steps to get a local developer environment with Trezor Suite connectivity:
Download the official Trezor Suite desktop app and make sure your Trezor firmware is up to date. For development, enable developer mode and use a test device or emulator where possible.
Clone the Trezor Suite SDK repo or install the npm package that exposes the bridge API for signing and device discovery.
Example: connect and get a public key (JavaScript)
// minimal example — connect to a Trezor device and request a public key
import { TrezorConnect } from 'trezor-connect'; // hypothetical package
await TrezorConnect.init({ manifest: { email: 'dev@example.com', appUrl: 'https://your.app' }});
const resp = await TrezorConnect.getPublicKey({ path: "m/44'/0'/0'/0/0" });
if (resp.success) {
console.log('Public key:', resp.payload.xpub || resp.payload.publicKey);
} else {
console.error('Device error:', resp.payload.error);
}
Signing flow and UX patterns
The signing flow is the most sensitive part. Request transaction details server-side, construct the unsigned transaction, and then present a clear, auditable confirmation UI. Trezor Suite will display the destination address and amount on the device screen — instruct users to verify them carefully. Implement an explicit "Review on device" step in your UI to reduce social engineering and address-replacement attacks.
Security best practices
- Never transmit or store private keys — rely on on-device signing.
- Use short-lived unsigned payloads and server-side validation to limit replay risk.
- Offer a passphrase option but clearly explain recovery implications to users.
- Test recovery and passphrase flows in your integration docs and QA plans.
Testing and sandboxing
Use test networks (testnet) and dedicated test devices or emulators during development. Simulate error scenarios such as invalid signature requests, rejected confirmations, and device disconnects. Automate CI tests for integration points that don't require a physical device by mocking the Trezor Suite API responses.
Performance & UX tips
- Cache public keys and account info where safe to reduce repeated device calls.
- Show clear progress and fallback instructions when the device is not connected.
- Keep transaction previews concise but complete — include fees, nonce, and destination.
Documentation & resources
Primary links you should bookmark:
Top 5 FAQs
1. Do I need a physical Trezor device to develop?
Physical devices are recommended for final testing. During early development you can use emulators and mocked responses, but always validate flows with a real Trezor device before production release.
2. How do I test signing without risking real funds?
Use blockchain testnets (e.g., Bitcoin Testnet, Ethereum Goerli) and test accounts. Configure your SDK and Suite to connect to test networks and never use mainnet keys for development.
3. What are common integration pitfalls?
Common pitfalls include not verifying addresses on-device, storing seeds or passphrases insecurely, and failing to handle disconnections and user rejections gracefully.
4. Does Trezor Suite provide SDKs for multiple languages?
Yes — official and community SDKs exist for JavaScript, Python, and other languages. Use the official SDKs for production; community SDKs can be useful for prototypes but verify maintenance and security.
5. Can I automate tests with CI/CD?
Yes — mock device responses in CI for most integration tests. For hardware-specific tests, include a gated step with a physical device or an authorized test rig.