Why build with Trezor Suite?
Trezor Suite is the official desktop and web application for managing Trezor hardware wallets.
For developers, the Suite and the related SDKs (like Trezor Connect) expose secure signing flows and key-management primitives so third-party wallets, dApps, and merchant integrations can perform cryptographic operations without exposing private keys.
The Developer Portal aggregates SDKs, API references, example apps, and platform notes so you can safely integrate hardware-backed signing into your product.
Who this guide is for
You are here if you're building any of the following:
- Third-party wallet integrations that call Trezor for public keys and signatures
- Web or mobile dApps that want an on-device signature approval UX
- Merchants integrating secure checkout with hardware-backed approvals
Quick start (install & run)
1. Download and verify Trezor Suite
Use the official downloads page to get the desktop or web build. Always verify checksums and signatures (Suite offers verification steps on the download page).
// Example: open Suite web or download the app
https://trezor.io/trezor-suite
// Follow verification steps on the official site
2. Install Trezor Connect (web SDK)
Trezor Connect is the recommended integration path for web apps. Install via npm or include a hosted script. The SDK manages device discovery, framing of requests, and user confirmation flows.
npm install --save @trezor/connect
// Basic usage
import TrezorConnect from '@trezor/connect';
TrezorConnect.getPublicKey({ path: "m/44'/0'/0'/0/0" })
.then(response => console.log(response));Notes on Connect flows
Newer Trezor devices and Suite versions changed the Connect flow (see the Connect docs). For Safe 7 devices the popup flow may be different — prefer the Suite-integrated flow for the best UX and security.
API patterns and UX considerations
Separation of duties
Keep sensitive logic off the client: perform address derivation and transaction construction on the backend when possible and use the device only for signing. This minimizes attack surface.
Signature request UX
Present clear, human-readable transaction summaries before invoking the signing call. Trezor devices show the data, but your app should translate amounts, recipients, and fees into user-friendly language.
Development checklist
Local dev environment
- Install Trezor Suite desktop (or use the web app) and verify firmware updates.
- Install Connect locally and test hardware detection on multiple OSes.
- Run the monorepo examples from the official GitHub to see end-to-end flows. (See repo below.)
Testing & CI
Automate end-to-end tests for address discovery and non-interactive flows. For signing flows, add a human-in-the-loop step or a simulated device in your test harness where possible.
Security best practices
Do not log private data
Never log seed phrases, private keys, or full unsigned transactions that contain private fields. Use ephemeral debug only when strictly necessary and strip secrets before persisting logs.
Firmware & Suite updates
Encourage users to keep firmware and Suite current — updates may add important security improvements or change integration flows. Surface update notices in your app and link back to official update notes.
Example integration snippet
Below is a minimal web flow that asks the device for a public key and derives an address client-side for display:
import TrezorConnect from '@trezor/connect';
async function getBtcAddress(){
const res = await TrezorConnect.getPublicKey({ path: "m/44'/0'/0'/0/0" });
if(res.success){
// show xpub / pubkey to the user
console.log(res.payload.xpub);
} else {
console.error('Trezor error', res.payload.error);
}
}Handling errors
Handle device disconnection, permission denial, and firmware mismatch gracefully. Show clear instructions: "Reconnect your Trezor", "Open Trezor Suite", or "Update firmware".
Troubleshooting & support
If you encounter issues, consult the official support guides and the Developer Portal for reported integration patterns. Official channels list device compatibility, OS-specific notes, and known issues.
Useful resources (official)
Checklist before shipping
- Test cold-start flows (new device) and regular device updates.
- Verify UX for all affected OS/browser combinations (desktop and mobile).
- Proof your messaging: show what the device will sign, never hide details.
- Run a security review or third-party audit for your integration if you handle customer funds.
Final notes
Integrating Trezor Suite brings hardware-backed security to your product, but it also requires careful consideration of UX, error handling, and update pathways. Use the official docs, the Suite monorepo examples, and Trezor Connect as your primary references. When in doubt, point users back to the official download, verification, and support pages so they can keep firmware and Suite current.