1nsync

1NSYNC is a full-stack, modular DeFi trading platform that leverages the power of "1inch APIs" to deliver an unparalleled user experience. The platform solves real-world problems with gas-optimized portfolio rebalancing (40-60% savings), emergency wallet recovery, and atomic multi-token swaps. Key features :

• 🔋 Gas-optimized batch swapping
• 🧑‍🤝‍🧑 SAFU RESCUE

1NSYNC is built as a modular, production-ready DeFi platform that showcases the complete power of 1inch APIs through a sophisticated three-layer architecture:

Layer 1: Smart Contracts - Solidity contracts with direct 1inch V6 integration Layer 2: API Service Layer - Comprehensive 1inch API abstraction with TypeScript Layer 3: React Frontend - Modern Web3 UI with real-time portfolio management

{ "frontend": { "framework": "Next.js 15.4.4 + TypeScript", "web3": "Viem v2.33.1 + Wagmi v2.16.0", "wallet": "RainbowKit v2.2.8", "ui": "Tailwind CSS v4 + Framer Motion", "state": "Zustand v5.0.6 + TanStack Query v5.83.0" }, "blockchain": { "contracts": "Solidity + Hardhat", "deployment": "Base, Ethereum, Arbitrum, Optimism", "integration": "1inch Router V6 direct calls" }, "apis": { "primary": "1inch API Suite (6+ endpoints)", "deployment": "Vercel Edge Functions", "caching": "Custom price cache + query invalidation" } }.

1. Smart Contract Architecture - ( innovated this this approach since batchswap was not available on 1inch) The most notable technical achievement is our BatchSwapperV2.sol contract that makes direct calls to 1inch's Router V6: contract BatchSwapperV2 { address constant oneInchRouter = "0x111111125421ca6dc452d289314280a0f8842a65";

   function executeBatchSwaps(SwapParams[] memory swaps) external nonReentrant { for (uint i = 0; i < swaps.length; i++) { (bool success, bytes memory result) = oneInchRouter.call{ value: swaps[i].ethValue }(swaps[i].swapData);

        require(success, "BatchSwapper: 1inch swap execution failed");
    }
   

   } }

The "Hacky" Part: We reverse-engineered 1inch's swap data format to enable atomic batch operations. Instead of using 1inch's standard single-swap approach, we:

Decode 1inch swap calldata into reusable components Reconstruct multiple swaps into a single atomic transaction Handle ETH/ERC20 edge cases that 1inch doesn't natively batch

Comprehensive 1inch API Integration Layer Built a sophisticated API abstraction that handles all 1inch services with resilience patterns: class OneInchAPI { private async makeRequest<T>(url: string, method = 'GET', body?: any): Promise<T> { // Custom retry logic with exponential backoff // API key rotation for rate limiting // Fallback price mechanisms when APIs fail }

// 6+ Different 1inch API integrations: async getBalances(address, chainId) // Balance API v1.2 async getPrices(chainId, tokens) // Price API v1.1
async getQuote(params, chainId) // Swap API v6.0 (quotes) async getSwap(params, chainId) // Swap API v6.0 (transactions) async getTokens(chainId) // Token metadata API async getGasPrice(chainId) // Gas optimization API } 3. Real-Time Portfolio Analysis Engine The most complex piece is our portfolio analysis system that combines multiple 1inch APIs in real-time: const analyzePortfolio = async (userAddress: string, chainId: number) => { // 1. Parallel API calls for performance const [balances, tokens, prices] = await Promise.all([ oneInchAPI.getBalances(userAddress, chainId), oneInchAPI.getTokens(chainId), oneInchAPI.getPrices(chainId, userTokens) ]);

// 2. Complex rebalancing calculations const rebalanceSteps = calculateOptimalSwaps(currentAllocation, targetAllocation);

// 3. Gas optimization using 1inch routing const gasEstimates = await Promise.all( steps.map(step => oneInchAPI.getQuote(step, chainId)) );

return { portfolio, rebalanceSteps, gasSavings }; };

1inch APIs - The Game Changer Using 1inch's comprehensive API suite gave us superpowers:

Swap API v6.0: Access to 500+ DEX aggregation with optimal routing Balance API v1.2: Multi-chain portfolio tracking without running our own nodes Price API v1.1: Real-time USD pricing for 10,000+ tokens Gas Price API: Dynamic gas optimization across chains The Benefit: Instead of building DEX aggregation from scratch , we leveraged 1inch's battle-tested infrastructure and focused on user experience innovation.

🎯Notable Innovations:

1. Atomic Portfolio Rebalancing The Problem: DeFi portfolios require multiple transactions to rebalance, causing:

High gas costs (3x-5x individual transactions) MEV exposure between transactions Partial execution failures Our Solution: We "hacked" 1inch's swap data format to enable atomic batch operations: // Instead of: USDC→ETH (tx1), USDC→WBTC (tx2), USDC→LINK (tx3) // We do: [USDC→ETH, USDC→WBTC, USDC→LINK] (single atomic tx)

1. Emergency Wallet Recovery (SAFU Module) The Innovation: Built a compromise detection system that uses 1inch APIs for emergency asset evacuation: SWAP ALL ASSETS ONCHAIN TO ETH USING 1INCH API AND TRANSFER TO SAFU WALLET

📊 Performance Optimizations & Testing Real-World Testing Results: Portfolio Rebalancing: 99.91% efficiency (0.8 USDC → 60% DAI + 40% WETH) Gas Usage: 561,629 gas vs 1M+ for individual transactions Multi-Asset Swaps: 100.14% efficiency for 4-token rebalancing API Response Times: <500ms average for portfolio analysis