Purro Extension Features Building

Wallet Management

• Create new wallet with 12-word seed phrase
• Import wallet from seed phrase or private key
• Watch-only accounts for address monitoring
• Data encryption with password protection
• Auto-lock after inactivity period
• Password change functionality
• Delete seed phrase option
• Reset wallet functionality
• Export private key with password verification

Multi-Network Support

• Hyperliquid EVM (mainnet & testnet) - Primary network
• Ethereum mainnet
• Arbitrum One
• Base mainnet
• HyperEVM Testnet (developer mode)
• Solana (in development)
• Sui (in development)

Main Interface

• Home Screen with portfolio overview
  • EVM tab with token balances
  • Spot tab for Hyperliquid DEX
  • Perpetuals tab for Hyperliquid DEX
  • Developer mode toggle
  • Notifications system with beta release announcements
  • Optimized tabs with performance tracking
• Swap Screen with full in-app swap functionality
  • In-app swap execution with HyperEVM token support
  • Token searching and selection with infinite scroll
  • Smart token selector with balance validation
  • Real-time price fetching from GeckoTerminal API
  • Gas estimation and optimization with safety buffers
  • WRAP/UNWRAP scenarios (HYPE ↔ WHYPE)
  • Swap confirmation dialogs with transaction success tracking
• Explorer Screen with dApp discovery and watchlist
  • Curated dApp directory with 11+ featured dApps
  • Watchlist system for favorite dApps
  • Direct dApp integration with one-click access
  • dApp categorization (DeFi, Bridge, DEX, NFT, etc.)
• NFT Screen with collection viewing
• History Screen with transaction history
• Account switching with account sheet

Transaction Features

• Send tokens on EVM networks
  • Token selection
  • Amount input with balance validation
  • Gas estimation
  • Transaction confirmation
• Send tokens on Hyperliquid DEX
  • DEX token transfer
  • Transaction success confirmation
• Receive tokens
  • Multi-network address display
  • QR code generation
  • Copy address functionality
• Drawer-based actions
  • Send drawer with EVM/DEX options
  • Receive drawer with chain selection
  • Bridge drawer with external links
  • Swap drawer with DEX integrations

Bridge & DEX Integration

• Bridge drawer (links to external bridges)
  • Hyperliquid DEX integration
  • HyperUnit integration
  • deBridge integration
• Swap drawer (links to external DEXes)
  • HyperSwap integration
  • Laminar integration
  • KittenSwap integration
  • LiquidSwap integration
• Deposit to Hyperliquid DEX
  • In-app transfer between Spot and Perps
  • Transfer USDC from Arbitrum (coming soon)
  • Transaction success confirmations
  • Real-time balance updates

NFT Features

• NFT collection display
• NFT instance viewing with pagination
• NFT detail dialog with metadata
• IPFS image support
• Hyperliquid Name (HL Name) support
• ERC-721 and ERC-1155 support

Portfolio & History

• Token portfolio with real-time balances (Ethereum/Arbitrum/Base/HyperEVM)
• Transaction history with infinite scroll
• Transaction detail view
• [⚠️] HyperScan integration for HyperEVM data (rate limited)
• Hyperliquid Name resolution in history
• Token metadata caching
• Unified token lists across networks
• HyperEVM token searching with comprehensive token discovery
• Real-time token pricing via GeckoTerminal API integration
• Testnet token support with custom tokens
• Performance tracking for loading times
• Error handling with fallback mechanisms
• Advanced Caching System
  • Smart transaction caching with incremental fetching
  • Multi-chain cache support (Ethereum, Arbitrum, Base, HyperEVM)
  • 5-minute fresh data guarantee
  • Storage-efficient with 5000 transaction limit per chain
• Optimized Portfolio Management
  • Cross-chain data caching (30-second cache duration)
  • Debounced API calls (300ms) to prevent excessive requests
  • Smart network-based fetching

HyperEVM API Limitations & HyperScan Integration

🚨 Current Technical Constraints

HyperEVM API Services Missing

HyperEVM currently lacks many essential API services required for comprehensive integration:

❌ Missing API Services:

• Token Metadata API - Detailed token information (decimals, symbol, name)
• Price Feed API - Real-time token prices
• Gas Estimation API - Transaction gas estimation
• Block Information API - Block and confirmation data
• Contract Interaction API - Smart contract method calls
• Event Logs API - Smart contract event logs
• DeFi Protocol APIs - LiquidSwap, HyperSwap integrations
• Portfolio Analytics API - Portfolio analysis and performance

✅ Available API Services:

• Basic transaction history
• Basic token balances
• Basic NFT information
• Basic address information

Current API Integration Status

✅ Alchemy SDK Integration (Ethereum, Arbitrum, Base) Purro extension currently uses Alchemy SDK for comprehensive blockchain data on supported networks:

• Ethereum Mainnet - Full Alchemy integration with complete APIs
• Arbitrum One - Full Alchemy integration with complete APIs
• Base Mainnet - Full Alchemy integration with complete APIs

⚠️ HyperScan Integration (HyperEVM - Temporary Solution) Due to HyperEVM API limitations, Purro extension currently uses HyperScan API as a workaround for HyperEVM data:

HyperScan Services Used for HyperEVM:

• Token balance fetching
• NFT collection data
• Transaction history
• Token transfer events
• NFT instance details

Future Alchemy Integration for HyperEVM:

• Comprehensive token metadata
• Advanced NFT APIs
• Real-time data feeds
• Enhanced transaction analytics
• Cross-chain portfolio management

⚠️ HyperScan Rate Limiting Issues

Rate Limits:

• Free Tier: 10 requests/minute
• Basic Tier: 100 requests/minute
• Pro Tier: 1000 requests/minute

Impact on User Experience:

• Slow loading times - Must wait between requests
• Incomplete data - Cannot load all data simultaneously
• Poor UX - Users need to refresh multiple times
• Limited functionality - Cannot implement real-time features

Current Mitigation:

• Caching Strategy: 10-minute cache for token data
• Request Queuing: Sequential API calls to avoid rate limits
• Fallback Mechanisms: Graceful degradation when limits are hit

📊 Performance Comparison

Metric	HyperScan (Current)	Alchemy (Target)
Rate Limit	10-1000 req/min	330 req/sec
Response Time	200-500ms	50-100ms
Data Completeness	Partial	Complete
Real-time Support	Limited	Full
Cost	Free/Paid	Free tier + paid
API Coverage	Basic blockchain	Comprehensive
Token Metadata	Limited	Full support
NFT Support	Basic	Advanced

dApp Integration

• EIP-1193 standard support
• EIP-6963 multi-provider discovery
• EIP-712 typed data signing
• Legacy methods compatibility
• Provider injection for web pages
• Connection management with site permissions
• Transaction signing with user confirmation
• Message signing with security warnings

Settings & Configuration

• Connected DApps management
• Active network selection
• Developer mode for testnet access
• Auto-lock time configuration
• Password management
• Testnet token management
  • Add custom testnet tokens
  • Fetch token metadata automatically
  • Manual token entry
  • Token balance tracking
  • Remove tokens
• Token cache management
• Session duration handling

Account Management

• Multiple account support
• Account creation from existing seed
• Account import (private key/seed phrase)
• Account editing
  • Change account name
  • Change account icon
  • View private key (with password)
  • View seed phrase (with password)
  • Delete account
• Watch-only account import

Security Features

• AES-256-GCM encryption for sensitive data
• PBKDF2 key derivation from password
• Secure random seed generation
• Origin validation for all requests
• User confirmation for transactions
• Per-site permissions management
• Session timeout protection
• Forgot password recovery flow
• Enhanced Security Test Suite
  • Session timeout and expiration testing
  • Data tampering detection
  • Auto-lock functionality validation
  • Storage isolation tests
  • Memory cleanup verification
  • Encryption parameter validation
• Security Audit Tools
  • Security test runner (pnpm run test:security)
  • Dependency audit (pnpm run security:audit)
  • Complete security check (pnpm run security:check)

User Interface

• Modern UI with Tailwind CSS
• Responsive design
• Dark theme by default
• Smooth animations with Framer Motion
• Side panel support
• Dialog system for modals
• Drawer system for bottom sheets
• Toast notifications
• Advanced Notifications System
  • In-app notification center with bell icon
  • Beta release announcements
  • Unread notification indicators
  • Notification dialog with rich content
  • Mark as viewed functionality
  • Notification types (release, update, announcement)
  • Persistent storage with view history
  • Rich content support with markdown formatting
• Performance optimizations
  • React 19.1.0 with latest features
  • Vite 6.3.5 for faster builds
  • Tailwind CSS 4.1.8 for modern styling
  • TanStack Query 5.80.7 for data fetching
  • TypeScript 5.8.3 for enhanced type safety
  • ESLint 9.18.0 for code quality
  • Lucide React 0.513.0 for modern icons

Developer Features

• Developer mode for testnet access
• Testnet chain support
• Debug logging
• Comprehensive Testing Framework
  • Unit testing for handlers
  • Security test runner with 100+ tests
  • Handler test framework with full coverage
  • Encryption validation tests
  • Memory management tests
• Type safety with TypeScript
• Testnet token management system
  • Custom token addition
  • RPC metadata fetching
  • Balance tracking
  • Token removal
• Performance tracking for data loading
• Error handling with graceful degradation
• Enhanced Hook System
  • Specialized hooks for watchlist, caching, optimization
  • State management with Zustand persistence
  • Multi-chain support hooks

Extension Features

• Manifest V3 compliance
• Background script with service worker
• Content script injection
• Offscreen document for cryptographic operations
• Side panel integration
• Popup interface
• Auto-updater support

Planned Features

• In-app swap functionality
• In-app bridge functionality (processing)
• Solana network integration
• Sui network integration
• Hardware wallet support
• Advanced DeFi integrations
• Staking features
• Governance participation
• Enhanced notifications with push notifications (processing)
• Advanced portfolio analytics with charts
• Social features for sharing transactions
• Multi-language support

ROADMAP COMPARISON (Based on Product Vision)

COMPLETED FEATURES

One Wallet - One Ecosystem

• Unified asset management L1/L2 - Multi-chain support (Ethereum, Arbitrum, Base, HyperEVM)
• Swap/bridge/send/receive in one interface - All functions available in unified UI

Token Swap via LiquidSwap

• LiquidSwap integration - Full in-app swap execution
• In-app swap execution - Complete swap functionality with HyperEVM tokens
• Advanced token searching - Comprehensive token discovery and selection
• Real-time pricing - Live price feeds from GeckoTerminal API

Pre-Transaction Gas

• Real-time gas estimation - Full implementation with EIP-1559 support
• Gas cost calculation - ETH/USD cost display with fallback mechanisms

Easy Multichain Integration

• Alchemy SDK integration - Complete multi-chain token support for Ethereum, Arbitrum, Base
• Token metadata caching - Optimized token data management
• Cross-chain portfolio - Unified view across networks
• [⚠️] HyperEVM integration - Limited by missing APIs, using HyperScan with rate limits (planning Alchemy migration)

Hyperliquid Names Transfers

• .hl names support - HL Names API integration
• Human-readable transfers - Names displayed in transaction history

Developer-First Architecture

• Modular SDKs - Clean separation of concerns
• Contextual signing - EIP-712 typed data support
• Cross-surface continuity - Side panel, popup, offscreen document

Developer Mode

• HyperCore & HyperEVM developer mode - Testnet support with toggle

Enhanced User Experience

• Advanced notifications system - Beta announcements and updates
• Drawer-based actions - Modern UI patterns for actions
• DApp Explorer - Curated dApp directory with watchlist
• Performance optimizations - React 19.1.0, Vite 6.3.5, Tailwind CSS 4.1.8
• Testnet token management - Custom token addition and management
• Enhanced caching system - Smart transaction and portfolio caching

PLANNED FEATURES (Not Yet Implemented)

Free Gas Swaps

• Gasless swaps - No HYPE token required
• Meta-transaction support - Gas abstraction layer

Token Launcher via LiquidLaunch

• In-app token creation - Integrated token deployment
• Instant launch and liquidity setup - One-click token launch

Hyper-Efficient Bridging

• One-click auto-bridge - Direct-to-dApp bridge integration
• Auto-handled gas logic - Smart bridge routing

AA Smart Wallet via ZeroDev

• EIP-4337 account abstraction - Smart contract wallets
• Session keys and paymasters - Gasless transaction support
• Social recovery - Multi-sig backup mechanisms

Trader-Centric Features

• Portfolio & PnL Tracking - Real-time P&L across chains/protocols
• One-Click Leverage Management - Hyperliquid futures integration
• Integrated TradingView/Chart Module - In-app trading charts

Security & UX Enhancements

• Multi-Sig & Social Recovery - Enhanced wallet security
• Phishing & Scam Detection - Contract/link security warnings
• Session Signing - EIP-4337 + session keys for reduced friction

Ecosystem Growth Hooks

• Referral & Reward System - Fee rebates or HYPE token rewards
• Community Plugin Layer - Developer mini-app/extension support
• Liquidity Incentive Tracker - Farming, staking, incentive tracking for HyperEVM

DEVELOPMENT PRIORITIES

Phase 1 - Core Infrastructure (Completed in v0.3.1)

• Multi-chain wallet functionality
• dApp integration (EIP-1193, EIP-6963, EIP-712)
• Basic DeFi operations (send, receive, portfolio)
• Basic notifications system
• Drawer-based UI patterns
• Initial performance optimizations

Phase 2 - Advanced Features (Completed in v0.6.2)

• DApp Explorer with watchlist functionality
• Enhanced security features with comprehensive test suite
• Advanced notifications system with rich content
• Smart caching system for transactions and portfolio
• Performance optimizations with latest dependencies
• Testnet token management - Custom token addition and management
• Hyperliquid DEX integration - Enhanced functionality
• In-app swap execution - Complete HyperEVM swap functionality
• Advanced token searching - HyperEVM token discovery and search
• Advanced bridging (planned)
• Alchemy SDK extension for HyperEVM (planned)

Phase 3 - Ecosystem Integration (Planned)

• Account abstraction (AA Smart Wallet)
• Token launcher integration
• Trader-centric tools
• Enhanced notifications
• Advanced portfolio analytics

Phase 4 - Community & Growth (Future)

• Plugin ecosystem
• Referral systems
• Advanced analytics
• Social features
• Multi-language support