Trezor Suite® – Getting Started™ Developer Portal

Purpose of the Developer Portal

The Trezor Suite® Developer Portal centralizes the technical guidance, integration patterns, and testing workflows needed to work with Trezor hardware and the Trezor Suite ecosystem. Use it to discover recommended integration approaches for desktop and web apps, to learn how Suite coordinates device interaction and transaction signing, and to find links to official SDKs and libraries. Always follow the official documentation and the manufacturer's guidance when deploying integrations in production.

Integration overview

Integrations with Trezor Suite® typically cover five activities: device enumeration and connection, user interaction (PIN / on-device confirmations), app installation and firmware handling, account discovery and address derivation, and transaction construction & signing. As a developer, structure your application so that sensitive operations (private key handling, seed exposure) remain under the exclusive control of the hardware device, and present clear, auditable UI flows that align with the on-device prompts users will see when approving actions.

Quick start — connecting to a device

Connect to a Trezor device using the recommended transport in your environment (WebUSB for browsers that support it, USB HID or TCP-adapters for native apps). The high-level flow is: detect device, prompt user to unlock and confirm, use the official transport layer to call device endpoints, and always validate the device response on the host side. Below is a minimal illustrative snippet showing the pattern of requesting a connection (this is an example; consult the official docs for exact library APIs):

// Pseudocode illustrating the connect-and-request pattern
async function connectToTrezor() {
  // detect and request device access (browser may prompt user)
  const device = await navigator.usb.requestDevice({ filters: [] }); 
  await device.open();
  // perform transport handshake, then call the API that requests a public key or signs a tx
  const resp = await sendTrezorCommand(device, { command: 'GetPublicKey', path: "m/44'/0'/0'/0/0" });
  console.log('Public key response:', resp);
}

The example above is intentionally generic. Use the official SDKs and libraries for error handling, device pairing, and higher-level helpers. Do not rely on unmaintained community wrappers for production-critical flows.

Account discovery & derivation

Account discovery with Trezor Suite® follows established derivation path standards (BIP32/44/49/84, etc.). When implementing discovery, derive addresses deterministically and present them to users in a clear way so they can confirm which accounts the app will manage. Offer an option to label accounts and to separate hot (daily) accounts from cold-storage accounts in your UI and workflows.

Transaction signing flow

Construct transactions on the host side and send the unsigned payload to the device for signing. The device must present the critical transaction details on its screen so the user can independently verify recipient, amount, and fees before approving. Never attempt to reconstruct or bypass on-device verification — the security model depends on the device being the single source of truth for approvals.

Testing & emulator guidance

Use official emulators, testnets, and staging environments when developing integrations. Automate tests that emulate device responses as well as human approval flows to verify edge cases. Ensure your CI pipelines include tests for transport failures, rejected transactions, device disconnects, and firmware update prompts so your application handles these gracefully in production.

Security best practices for developers

Minimize attack surface by keeping private-material handling off-host. Use secure channels for any remote services and ensure all third-party dependencies are vetted and up to date. Display clear warnings to users when they are asked to reveal sensitive information; never ask users for recovery seeds. Log only non-sensitive traces for debugging and follow secure-disclosure and incident-response procedures if a vulnerability is discovered.

SDKs, libraries & contribution

Consult the official SDKs and client libraries for the exact APIs and recommended patterns. If your integration includes open-source contributions, follow the contributor guidelines provided in the developer portal, include clear tests and documentation, and avoid shipping custom firmware or tools that could erode user trust. Contributions that improve clarity, developer DX, and security checks are encouraged.