Multi-Chain Yield Comparison-and-Router

WHAT IT DOES This tool compares yield opportunities across multiple EVM chains and protocols, helping users identify the best APY for their assets across the multi-chain landscape. Given a token address, a list of yield sources (each with chain ID, RPC URL, protocol label, and pool address), an amount, and an optional user address, it reads the APY rate from each protocol using flexible ABI detection—trying getReserveData (Aave-style), supplyRatePerSecond (Compound-style), depositRate, getAPY, and generic rate functions. It then calculates the estimated yield and annual return for the specified amount, ranks the protocols by APY, and displays a visual comparison bar with the best opportunity highlighted. The tool also reads the user's token balance for context. All data is pulled directly from the blockchain and RPC endpoints in real time, providing a transparent, data-driven view of yield opportunities across chains. HOW TO USE Connect your wallet using the Connect button in the header, or enter a user address manually. Select the target network from the dropdown—Ethereum Mainnet, Polygon, Optimism, Arbitrum One, Base, or Sepolia testnet. Enter the token address you wish to compare yields for. Enter each yield source on a separate line in the format: chainId,rpcUrl,protocolLabel,poolAddr (e.g., "1,https://eth.llamarpc.com,Aave V3,0x7d2768dE32b0b80b7a3454c06BdAc94A69DDc7A9"). Enter the amount you want to compare in human-readable format. Optionally, provide a user address (defaults to connected wallet). Click "Compare yields." The tool will fetch the APY from each protocol, calculate estimated yield and annual return, and rank the results. Results appear in the card below with a "best protocol" badge highlighting the highest APY, a visual APY comparison bar, yield cards showing each protocol's APY, chain ID, estimated annual return, and user token balance if provided. Use this information to identify the best yield opportunity across chains. MULTI-CHAIN YIELD COMPARISON WITH FLEXIBLE PROTOCOL DETECTION AND ROUTING The tool provides comprehensive multi-chain yield comparison through flexible ABI detection and cross-chain queries. For each yield source, it creates a separate provider using the configured RPC URL and attempts multiple ABI patterns to read the APY—getReserveData (Aave-style pools with liquidityRate in ray format), supplyRatePerSecond (Compound-style), depositRate, getAPY, and finally a generic rate() fallback. Each rate is normalized to a percentage APY, accounting for different decimal scales (1e27 for ray, 1e18 for wei). The tool then calculates the estimated yield as amount * (apy / 100) and the annual return as amount + estimated yield. Protocols are ranked by APY in descending order, and a visual comparison bar shows the relative performance of each protocol with color coding—green for high (≥5%), amber for medium (2-5%), and red for low (