UKey Developers

Start Here

Begin with the core SDK path, then jump into the chain or provider docs that match your app.

Choose the right transport, initialize the SDK, handle UI events, and make your first signing call.

Open Guide ↗

Browse hardware SDK methods for addresses, public keys, messages, transactions, and verification.

Open Guide ↗

Device Connection

Link UKey Wallet hardware through USB or BLE with the right transport for each platform.

A browser-friendly USB bridge for web apps and desktop flows.

Open Guide ↗

Bluetooth transport built for React Native apps.

Open Guide ↗

Bluetooth transport for native iOS and Android apps.

Open Guide ↗

App Integration

SDKs and APIs for connecting wallets, requesting signatures, and wiring in workflows.

Start with the integration map, SDK setup, and supported connection paths.

Open Guide ↗

A provider layer for chain access, signing, and wallet events.

Open Guide ↗

A ready-made connection UI with mobile-first support.

Open Guide ↗

Chain Signing

Deep links into the highest-value signing references for wallet and DApp integrations.

Build BTC address, message, and transaction signing flows.

Open Guide ↗

Use Ethereum and EVM methods for addresses, messages, typed data, and transactions.

Open Guide ↗

Connect Solana accounts and transaction signing flows.

Open Guide ↗

Offline Flows

Move signing into a QR-based offline flow when network isolation matters.

Sign transactions offline with QR exchange between device and app.

Open Guide ↗

Need help integrating?

Get support for SDK setup, transport choices, and launch checks.

Contact Support GitHub Issues

UKey Wallet Developers Portal

Start Here

SDK Overview

Chain APIs

Device Connection

WebUSB Access

React Native BLE

Native BLE

App Integration

Developer Overview

Provider API

Web3Modal UI Kit

Chain Signing

Bitcoin Signing

EVM Signing

Solana Signing

Offline Flows

Air-Gapped QR Flow

Need help integrating?