FusionTrade

FusionTrade is a professional-grade, multi-chain DEX aggregator that transforms decentralized trading into a seamless, CEX-like experience. Built on top of 1inch's powerful infrastructure, we've created the missing layer that brings institutional-level trading strategies to DeFi, empowering traders to execute complex maneuvers without sacrificing self-custody or on-chain transparency.

Our platform is designed to be the ultimate trading hub for both seasoned pros and ambitious newcomers across all major EVM chains, including Ethereum, Polygon, Arbitrum, Optimism, and Base.

Core Innovation & Key Features We extended the 1inch Limit Order Protocol to support advanced automated strategies, creating a full-featured application powered by the entire suite of 1inch APIs.

1. Advanced Order Types: 📈 Take Profit/Stop Loss (TP/SL): Automate your risk management. Our system monitors prices in real-time and executes trades via 1inch when your targets are hit. ⏳ TWAP (Time-Weighted Average Price): Execute large orders with minimal price impact by intelligently breaking them into smaller, time-distributed segments.

2. A True CEX-like Experience: ⛽ Completely Gasless Trading: Through Account Abstraction and Pimlico sponsorship, users never need to worry about holding native gas tokens. All transaction fees are covered. 🖱️ One-Click Trading: Privy's smart accounts remove the need for constant pop-ups and signature approvals for every action, creating a fluid trading flow.

3. Professional Trading Dashboard: 📊 Comprehensive Analytics: A full suite of tools including real-time portfolio tracking, P&L analysis, and detailed order management. 💹 Advanced Charting: TradingView-style charts with technical indicators, powered directly by the 1inch Price API. 📚 Rich Market Data: We utilize all available 1inch Data APIs to provide live order book simulation, market pair discovery, token metadata, and price feeds.

Why This Matters for the 1inch Ecosystem Current DEX interfaces lack the sophisticated tools that keep serious trading volume on centralized exchanges. By building these advanced strategies directly on top of the 1inch Limit Order Protocol, we are unlocking a new segment of professional traders and significant volume for the 1inch ecosystem. FusionTrade proves that traders no longer have to choose between advanced features and decentralization.

Architecture Overview Our system consists of two main components working in perfect harmony:

Backend (NestJS + Redis)

1. Order Management Engine: Built with NestJS, this is the brain of our operation. It handles all advanced order logic, including real-time TP/SL monitoring and the scheduling of TWAP orders.
2. Redis Order Book: We use Redis to store and manage all pending and scheduled advanced orders. A 5-second cron job continuously checks Redis, monitors market prices via the 1inch API, and triggers orders due for execution.
3. 1inch API Integration: We built a comprehensive wrapper that implements ALL relevant 1inch APIs — swap, quote, limit orders, prices, tokens, and portfolios — making our platform a true 1inch-native application.
4. Smart Account Service: This service manages user wallets provisioned by Privy and orchestrates gasless execution through the Pimlico paymaster.
5. Custom Limit Order Extensions: Our signature TP/SL and TWAP strategies are built as intelligent off-chain extensions that execute on-chain via the 1inch Limit Order Protocol.

Frontend (Next.js 15 + Wagmi 2)

1. Modern Stack: We use the Next.js 15 App Router with TypeScript for maximum performance and type safety.
2. Web3 Integration: Wagmi 2 + Viem provide robust and reliable hooks for all our blockchain interactions.
3. Real-time Updates: React Query is used for efficient server-state management, data fetching, and intelligent caching to keep the UI snappy and up-to-date.
4. Professional UI: A responsive, accessible interface built with Tailwind CSS and Headless UI.
5. Advanced Charts: We integrated the Lightweight-charts library directly with the 1inch Price API to deliver professional-grade charting.

Technical Implementation Details

1. Advanced Order Execution: Our off-chain engine programmatically breaks down user intent into on-chain actions.
2. Gasless Transaction Flow: a. User initiates a trade through their Privy-powered smart wallet. b. Our backend constructs the transaction and prepares the UserOperation. c. The UserOperation is sent to the Pimlico paymaster, which sponsors the gas fee. d. The transaction executes on-chain without the user ever paying gas or signing a typical transaction prompt.

Notable Hacks & Optimizations

1. Hybrid Order System: We combine the reliability of on-chain 1inch limit orders with the gas efficiency and complexity of our off-chain monitoring engine. This gives us advanced functionality without exorbitant gas costs for the user.
2. Smart Caching: A multi-tier caching strategy (in-memory + Redis) on our backend significantly reduces redundant API calls while maintaining real-time data accuracy.
3. Parallel Chain Queries: Our system fetches data (like balances and prices) simultaneously across all supported chains, providing a fluid and aggregated multi-chain view.
4. Retry Logic: We've implemented exponential backoff for any failed transactions or API calls, ensuring high reliability even during periods of network congestion.

Why 1inch Technologies Were Perfect

1. Fusion SDK: Enabled truly gasless swaps with built-in MEV protection, which is critical for user trust.
2. Limit Order Protocol: Provided the robust, on-chain foundation for us to build our advanced trading strategies.
3. Comprehensive APIs: Allowed us to build a complete, feature-rich trading experience without relying on any external data providers.
4. Cross-chain Support: The native multi-chain capabilities of the 1inch APIs greatly simplified our architecture and allowed us to scale quickly.

The result is a trading platform that brings the best of centralized exchanges to DeFi, poised to drive significant new volume to the 1inch ecosystem by making advanced trading accessible to everyone.