A demonstration project showcasing how to build a modern neobank using Privy, 0x Protocol, Match, Morpho, and Safe smart contracts.
SimpleWallet is a comprehensive demo application that demonstrates how to integrate multiple DeFi protocols and infrastructure services to create a fully-featured neobank experience. Built on Base, this project serves as a reference implementation for developers looking to understand how to combine wallet infrastructure, DEX aggregation, yield generation, and smart contract security in a production-ready web3 banking application.
This is a demo/example project designed to showcase:
- How to integrate Privy for smart wallet infrastructure and account abstraction
- How to use 0x Protocol for optimal token swapping across multiple DEXs
- How to leverage Match for advanced order matching and aggregation
- How to integrate Morpho for yield generation through curated lending vaults
- How to implement Safe smart contracts for secure, multi-sig wallet functionality
- 💰 Multi-Asset Portfolio Management - Track balances across USDC, EURC, WETH, WBTC, and more
- 🔄 Token Swapping - Seamless token exchanges via 0x Protocol aggregation
- 📈 Yield Generation - Deposit assets into Morpho vaults to earn competitive yields
- 💸 Send & Receive - Traditional banking-style transfer functionality
- 📊 Activity Tracking - Comprehensive transaction history and analytics
- 🌍 Multi-Language Support - Internationalization (English, Russian)
- 🔒 Smart Wallet Integration - Privy-powered account abstraction with gasless transactions
- 🛡️ Safe Smart Contracts - Multi-sig security with Safe protocol integration
- ⚡ Optimistic Updates - Instant UI feedback for better UX
- 📱 Responsive Design - Mobile-first approach with Tailwind CSS
- 🎨 Modern UI - Built with Shadcn UI and Radix UI components
- 🛡️ Type Safety - Strict TypeScript configuration for maximum reliability
Privy - Smart wallet infrastructure providing:
- Account abstraction and gasless transactions
- Social login and embedded wallet support
- Multi-chain wallet management
0x Protocol - DEX aggregation for:
- Optimal token swap routing across multiple DEXs
- Best price discovery
- Gas-efficient transaction execution
Match - Advanced order matching and aggregation:
- Enhanced liquidity access
- Improved price discovery
- Advanced trading capabilities
Morpho Protocol - Yield generation via:
- Curated lending vaults (USDC, EURC)
- Automated yield accrual
- ERC4626-compliant vault integration
Safe Smart Contracts - Security infrastructure:
- Multi-signature wallet support
- Social recovery mechanisms
- Enhanced security for high-value operations
- Framework: Next.js 15 (App Router) with React 19
- Blockchain: Base Network (L2)
- Smart Contract Interaction: Viem v2, Wagmi v2
- Wallet Infrastructure: Privy (@privy-io/react-auth)
- DEX Integration: 0x Protocol (@0x/0x-parser)
- Yield Protocol: Morpho (@morpho-org/blue-sdk)
- Smart Contracts: Safe (@safe-global/protocol-kit)
- UI Components: Shadcn UI, Radix UI
- Styling: Tailwind CSS
- State Management: Zustand, React Query
- Type Safety: TypeScript (strict mode)
- Package Manager: pnpm
- Node.js 20+
- pnpm 10+
- A Privy App ID and Client ID
- 0x API key (optional, for enhanced features)
- Dune API key (for analytics)
- Clone the repository:
git clone https://github.com/yourusername/simplewallet.git
cd simplewallet- Install dependencies:
pnpm install- Set up environment variables:
Create a .env.local file in the root directory:
# Privy Configuration (Required)NEXT_PUBLIC_APP_ID=your_privy_app_idNEXT_PUBLIC_CLIENT_ID=your_privy_client_id# Monerium Configuration (Optional - for fiat on/off ramp)NEXT_PUBLIC_MONERIUM_CLIENT_ID=your_monerium_client_id# Fee ConfigurationNEXT_PUBLIC_FEE_RECIPIENT=your_fee_recipient_address# API KeysDUNE_API_KEY=your_dune_api_keyZEROX_API_KEY=your_0x_api_key# Feature Flags (optional)NEXT_PUBLIC_FEATURE_MONERIUM_AUTH=falseNEXT_PUBLIC_FEATURE_ZEROX_SWAP=true- Run the development server:
pnpm devOpen http://localhost:3000 in your browser to see the application.
# Development
pnpm dev # Start dev server with Turbopack
pnpm dev:https # Start dev server with HTTPS# Building
pnpm build # Production build with linting
pnpm build:analyze # Build with bundle analysis
pnpm build:ci # CI build with strict checks# Code Quality
pnpm lint # Run ESLint
pnpm lint:fix # Fix ESLint issues
pnpm type-check # TypeScript type checkingsrc/
├── app/ # Next.js App Router
│ ├── api/ # API routes
│ ├── dashboard/ # Main dashboard page
│ ├── activity/ # Transaction history
│ ├── asset/ # Asset detail pages
│ ├── settings/ # User settings
│ ├── providers/ # React context providers
│ └── layout.tsx # Root layout
├── components/ # React components
│ ├── token-balances/ # Token balance components
│ ├── error-boundaries/ # Error handling
│ └── ui/ # Shadcn UI components
├── hooks/ # Custom React hooks
├── lib/ # Utility libraries
├── config/ # Configuration files
├── contexts/ # React contexts
├── stores/ # Zustand stores
├── types/ # TypeScript types
└── locales/ # i18n translations
This is a demo project. For production use:
- Implement comprehensive security audits
- Add additional input validation
- Implement rate limiting
- Add monitoring and alerting
- Conduct thorough testing
- Review and update all dependencies regularly
- Feature Flags - Feature flag configuration
- Vault Integration - Morpho vault integration details
- Multi-Asset Vault - ERC4626 vault implementation
- Token Information - Supported tokens documentation
This is a demonstration project. Contributions, suggestions, and improvements are welcome!
- Fork the repository
- Create your feature branch (
git checkout -b feature/amazing-feature) - Commit your changes (
git commit -m 'Add some amazing feature') - Push to the branch (
git push origin feature/amazing-feature) - Open a Pull Request
This project is licensed under the MIT License - see the LICENSE file for details.
This is a demo/example project for educational and demonstration purposes. It is not intended for production use without proper security audits, testing, and compliance reviews. Use at your own risk.
Built with: