ShieldEngine.js

const ethers = require('ethers');

class AegisShield {
    constructor(rpcUrl) {
        this.provider = new ethers.providers.JsonRpcProvider(rpcUrl);
        this.blacklist = ['0xScamAddress...', '0xDrainerContract...'];
    }

    async simulateTransaction(txRequest) {
        console.log("[*] Intercepting Outgoing Transaction...");
        
        // Check for risky methods
        const data = txRequest.data;
        if (data.includes('0x095ea7b3') || data.includes('0xa22cb465')) {
            console.warn("[⚠️] WARNING: Transaction contains 'Approve' or 'SetApprovalForAll'!");
            return { status: 'RISKY', risk_level: 'CRITICAL' };
        }

        console.log("[*] Forking Chain State for Simulation...");
        // Simulation logic here...
        console.log("[SUCCESS] Assets Safe: No malicious state changes detected.");
        return { status: 'SAFE', risk_level: 'LOW' };
    }
}

const aegis = new AegisShield("https://mainnet.infura.io/v3/your-api-key");
aegis.simulateTransaction({ to: "0x...", data: "0x..." });