CROSSx 2.0

CROSSx 2.0 is a next-generation Embedded Wallet SDK platform. It integrates OAuth-based authentication and blockchain wallet functionality into a single SDK, enabling app developers to implement Web3 features without the complexity of key management.

Key Features

OAuth Login - Supports Google / Apple social login (direct JWT injection also supported)
Embedded Wallet - Mnemonic-based HD wallet creation and management, protected by PIN
Signing & Sending - EIP-191 message signing, EIP-712 typed data, transaction signing and sending
RPC Proxy - Chain-specific JSON-RPC calls (eth_call, eth_getBalance, etc.)
Biometric Authentication - PIN protection via Face ID / Touch ID
Legacy Migration - Automatic recovery of existing CROSSx native app wallets
Theme Customization - Light / Dark / System mode, semantic color token overrides

Supported Platforms

Platform	Package	Minimum Requirements
iOS	Swift Package Manager	iOS 15.0+, Xcode 15+
Android	Maven / Gradle	Android 8.0+ (API 26)
JavaScript (Core)	npm	Node 18+ / Modern browsers
React	npm	React 18+
Wagmi	npm	Wagmi v2+

Integration Flow (Common)

Install SDK and set project ID
OAuth login (or inject JWT)
Create wallet (createWallet)
Sign / send / make RPC calls