Welcome to the Trezor Suite Developer Portal. Whether you are building a dApp, exchange integration, or a security-focused product, Trezor Suite gives you the tools to perform signing, key management, and user consent flows using best-in-class hardware security. This guide walks through the essentials — from registering your project to producing a production-ready integration.
Hardware wallets are the highest standard for private key protection. Trezor Suite exposes APIs and UX patterns that let developers orchestrate transaction signing, device discovery, firmware checks, and user confirmations while keeping the private key inside the secure element. The result: secure cryptographic operations, unified UX, and a trustworthy onboarding pathway for your users.
Start by creating an account in the Trezor developer portal. Register your application to get API keys, webhook endpoints, and to configure allowed origins. Treat these credentials like secrets — rotate them and store them in a secure vault.
Configure redirect URIs for OAuth-style flows and provide explicit callback endpoints for device events. Make sure your production and staging origins are distinct and use HTTPS in production.
Use test devices or firmware emulators to validate device pairing, transport libraries, and behavior across different platforms (Windows, macOS, Linux). Automated integration tests are recommended for every CI run.
Keep the private key inside the hardware. The portal helps you perform signing requests, but the private key must never leave the Trezor device.
Trezor Suite uses established transport layers: WebUSB, U2F, and Bridge for desktop applications. Your integration should probe available transports, display a clear choice to the user, and provide fallbacks. Always handle permission declines gracefully and guide the user to enable the transport (for example, installing Trezor Bridge or enabling WebUSB in Chrome).
The typical signing flow includes:
// Example pseudo-code: send signing request
const payload = prepareTransaction(...);
const sig = await trezor.sign(payload);
submitToNetwork(sig);
When asking users to confirm an action on their Trezor, show a clear, human-readable summary in your app first. Include amounts, destination addresses, and fees. Make it obvious when a transaction will create a contract interaction or when it will send tokens to a smart contract.
Devices may require firmware updates or have different feature sets by version. Implement a device state check early and use clear, sequential modals: detect -> inform -> guide -> resolve. Avoid blocking the user with opaque errors — always provide actionable steps.
Show detected transports and device model.
Open pairing prompt and wait for user confirmation on the device.
Display readable transaction summary and request device approval.
Show signed transaction hash and next steps.
Mock transport layers in unit tests. Simulate declined confirmations, malformed payloads, and transport timeouts. This prevents surprises when real devices behave differently under load.
Use a staged environment for end-to-end tests. Validate device firmware compatibility and confirm transactions on testnets before promoting code to production.
Document what metadata you collect and why. Keep user-identifiable data encrypted at-rest and limit retention. Consider having a public security disclosure page and a bug bounty for responsible reporting.
If you support a lesser-known chain, provide serialization and transaction templates. Coordinate with Trezor firmware teams if your chain requires custom signing logic or opcodes.
When signing multiple transactions, show a consolidated preview and allow per-item review. This prevents accidental bulk approvals that could lead to loss of funds.
Collect non-identifying telemetry to improve UX, but never log private keys, passphrases, or full transaction payloads that reveal sensitive details.
Leverage the developer community to find tested patterns and libraries. Share code snippets, sample apps, and reproducible issues. Encourage contributors by providing robust documentation and a contribution guide.
We recommend reading wallet security primer articles, existing Trezor integration examples, and the hardware wallet security cryptography whitepapers.