crossmind

CrossMind: AI-Powered Cross-Chain Bridge Visualizer Core Concept CrossMind is a sophisticated full-stack application that enables seamless cross-chain token bridging with beautiful real-time visualization and AI-powered recommendations. It combines a Next.js/React frontend with a FastAPI backend, integrated with the Avail Nexus SDK for real blockchain operations. Key Features

1. Multi-Chain Bridge Execution Supports 7 blockchains: Sepolia, Polygon Amoy (testnet), Ethereum, Polygon, Arbitrum, Optimism, Base (mainnet) Bridges 4 tokens: USDC, USDT, ETH, WETH Real integration with Avail Nexus SDK for actual cross-chain transfers Live transaction tracking with progress monitoring
2. Beautiful Real-Time Visualization Animated chain nodes showing source and destination networks Flowing token sphere animation during bridge execution Live progress tracking (0-100%) Multi-stage transaction timeline with confirmation statuses Bridge statistics dashboard (gas costs, exchange rates, estimated time, fees) Transaction hash display with block explorer links
3. Intelligent Quote System Backend provides estimated quotes with fee calculations Real-time slippage estimation Gas cost breakdown per chain Bridge fee percentage display Exchange rate calculation
4. AI Agent Integration MeTTa symbolic reasoning for intent parsing Autonomous route recommendations Risk assessment analysis Trading intent extraction from natural language No dependency on external LLMs (pure symbolic reasoning)
5. Wallet Integration wagmi/Web3 wallet connection Support for MetaMask and compatible wallets Real account-based operations Balance checking across chains Architecture Frontend (Next.js 14 + React 18 + TypeScript) Components: NexusFlowVisualizer, ChainNode, FlowAnimation, BridgeStats, TransactionTracker Services: Bridge service, Avail Nexus SDK wrapper State management: React hooks Styling: Tailwind CSS with custom animations (Framer Motion) Real blockchain integration via Avail Nexus SDK Backend (FastAPI + Python) RESTful API endpoints for quotes, execution, and status VectorX Bridge API integration (https://turing-bridge-api.avail.so) Fee estimation and route optimization MeTTa-based reasoning engine Blockscout integration for transaction verification Async/await pattern for non-blocking operations

Frontend Stack

Framework & UI Next.js 14 - React-based framework for server-side rendering and API routes React 18 - Component-based UI with hooks for state management TypeScript - Full type safety across the application Tailwind CSS - Utility-first CSS for responsive, beautiful styling Framer Motion - Smooth animations for token flow visualization

Blockchain Integration wagmi - React hooks for Ethereum wallet connections (MetaMask, WalletConnect) viem - Low-level Ethereum library for contract interactions @avail-project/nexus-core - Real Avail Nexus SDK for cross-chain bridge execution ethers.js - Backup for contract ABI parsing and encoding Key Components Architecture NexusFlowVisualizer (Orchestrator) ├── ChainNode (Source/Dest visualization) ├── FlowAnimation (Token movement animation) ├── BridgeStats (Fee/rate display) └── TransactionTracker (Status & explorer links)

Backend Stack

Framework & APIs FastAPI - Async Python framework with automatic Swagger documentation Uvicorn - ASGI server for handling async operations Pydantic - Request/response validation with type hints httpx - Async HTTP client for external API calls Integrations VectorX Bridge API (https://turing-bridge-api.avail.so) - Real Avail bridge infrastructure Blockscout API - Multi-chain transaction verification and tracking Pyth Network - Real-time price feeds for token valuations

AI & Reasoning MeTTa - Symbolic reasoning language for:

• Intent parsing from natural language
• Route optimization logic
• Risk assessment evaluation
• Pure symbolic reasoning (NO external LLMs)