Fidelity DeFi Yield Farming: Traditional Finance Integration Guide

// Example: Checking Fidelity custody support for DeFi tokens
const supportedTokens = {
  ethereum: ['ETH', 'WETH'],
  stablecoins: ['USDC', 'USDT', 'DAI'],
  defiTokens: ['UNI', 'AAVE', 'COMP', 'MKR'],
  yieldTokens: ['stETH', 'rETH', 'aUSDC']
};

// Verify token eligibility for custody
function checkCustodyEligibility(token) {
  const allSupported = Object.values(supportedTokens).flat();
  return allSupported.includes(token);
}

console.log(checkCustodyEligibility('AAVE')); // true

import requests
from web3 import Web3

class FidelityDeFiInterface:
    def __init__(self, api_key, custody_address):
        self.api_key = api_key
        self.custody_address = custody_address
        self.base_url = "https://api.fidelitydigitalassets.com"
        
    def get_custody_balance(self, token_address):
        """Get token balance in Fidelity custody"""
        endpoint = f"{self.base_url}/custody/balance"
        params = {
            'token_address': token_address,
            'custody_address': self.custody_address
        }
        response = requests.get(endpoint, params=params, 
                              headers={'Authorization': f'Bearer {self.api_key}'})
        return response.json()
    
    def initiate_defi_transaction(self, protocol, action, amount):
        """Initiate DeFi transaction through Fidelity infrastructure"""
        transaction_data = {
            'protocol': protocol,
            'action': action, # 'stake', 'unstake', 'claim'
            'amount': amount,
            'from_address': self.custody_address
        }
        
        endpoint = f"{self.base_url}/defi/execute"
        response = requests.post(endpoint, json=transaction_data,
                               headers={'Authorization': f'Bearer {self.api_key}'})
        return response.json()

# Usage example
fidelity_client = FidelityDeFiInterface(
    api_key="your_institutional_api_key",
    custody_address="0x742d35Cc6634C0532925a3b8D5c9a2935C..."
)

# Check USDC balance in custody
usdc_balance = fidelity_client.get_custody_balance("0xA0b86a33E6441f8343b7a9D7c9e44E4f6a7c8b9a")
print(f"USDC Balance: {usdc_balance['balance']} USDC")

// Smart contract interface for Fidelity custody integration
pragma solidity ^0.8.19;

interface IFidelityCustody {
    function depositToProtocol(
        address protocol,
        address token,
        uint256 amount,
        bytes calldata data
    ) external returns (bool);
    
    function withdrawFromProtocol(
        address protocol,
        address token,
        uint256 amount
    ) external returns (bool);
    
    function getProtocolBalance(
        address protocol,
        address token
    ) external view returns (uint256);
}

contract FidelityDeFiManager {
    IFidelityCustody public immutable custody;
    mapping(address => bool) public authorizedProtocols;
    
    constructor(address _custody) {
        custody = IFidelityCustody(_custody);
    }
    
    function stakeToAave(uint256 amount) external {
        require(authorizedProtocols[0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9], "Protocol not authorized");
        
        // Encode Aave deposit function call
        bytes memory data = abi.encodeWithSignature(
            "deposit(address,uint256,address,uint16)",
            0xA0b86a33E6441f8343b7a9D7c9e44E4f6a7c8b9a, // USDC
            amount,
            address(this),
            0
        );
        
        custody.depositToProtocol(
            0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9, // Aave
            0xA0b86a33E6441f8343b7a9D7c9e44E4f6a7c8b9a, // USDC
            amount,
            data
        );
    }
}

interface RiskParameters {
  maxAllocation: number; // Maximum % of portfolio in DeFi
  protocolLimit: number; // Maximum % per protocol
  minimumLiquidity: number; // Minimum liquid reserves
  stopLossThreshold: number; // Auto-exit threshold
}

class FidelityRiskManager {
  private riskParams: RiskParameters;
  private totalPortfolioValue: number;

  constructor(params: RiskParameters, portfolioValue: number) {
    this.riskParams = params;
    this.totalPortfolioValue = portfolioValue;
  }

  validateAllocation(protocolAddress: string, amount: number): boolean {
    // Check maximum DeFi allocation
    const currentDeFiAllocation = this.getCurrentDeFiAllocation();
    const newAllocation = (currentDeFiAllocation + amount) / this.totalPortfolioValue;
    
    if (newAllocation > this.riskParams.maxAllocation) {
      console.log(`Allocation exceeds maximum: ${newAllocation * 100}%`);
      return false;
    }

    // Check per-protocol limit
    const protocolAllocation = this.getProtocolAllocation(protocolAddress);
    const newProtocolAllocation = (protocolAllocation + amount) / this.totalPortfolioValue;
    
    if (newProtocolAllocation > this.riskParams.protocolLimit) {
      console.log(`Protocol allocation exceeds limit: ${newProtocolAllocation * 100}%`);
      return false;
    }

    return true;
  }

  private getCurrentDeFiAllocation(): number {
    // Implementation would query actual DeFi positions
    return 0;
  }

  private getProtocolAllocation(protocolAddress: string): number {
    // Implementation would query specific protocol allocation
    return 0;
  }
}

// Usage
const riskManager = new FidelityRiskManager({
  maxAllocation: 0.15, // 15% max in DeFi
  protocolLimit: 0.05, // 5% max per protocol
  minimumLiquidity: 0.10, // 10% liquid reserves
  stopLossThreshold: 0.08 // 8% stop loss
}, 10000000); // $10M portfolio

console.log(riskManager.validateAllocation("0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9", 500000));

import asyncio
from typing import Dict, List
from dataclasses import dataclass

@dataclass
class YieldOpportunity:
    protocol: str
    token: str
    apy: float
    tvl: int
    risk_score: int  # 1-10, lower is safer

class FidelityYieldOptimizer:
    def __init__(self, fidelity_client):
        self.client = fidelity_client
        self.protocols = {
            'aave': '0x7Fc66500c84A76Ad7e9c93437bFc5Ac33E2DDaE9',
            'compound': '0xc00e94cb662c3520282e6f5717214004a7f26888',
            'yearn': '0x0bc529c00c6401aef6d220be8c6ea1667f6ad93e'
        }
    
    async def scan_yield_opportunities(self) -> List[YieldOpportunity]:
        """Scan all supported protocols for yield opportunities"""
        opportunities = []
        
        # Aave USDC lending
        aave_apy = await self.get_aave_apy('USDC')
        opportunities.append(YieldOpportunity(
            protocol='aave',
            token='USDC',
            apy=aave_apy,
            tvl=12500000000,  # $12.5B TVL
            risk_score=2
        ))
        
        # Compound USDC lending
        compound_apy = await self.get_compound_apy('USDC')
        opportunities.append(YieldOpportunity(
            protocol='compound',
            token='USDC',
            apy=compound_apy,
            tvl=8200000000,  # $8.2B TVL
            risk_score=3
        ))
        
        return opportunities
    
    def optimize_allocation(self, opportunities: List[YieldOpportunity], 
                          total_amount: int) -> Dict[str, int]:
        """Optimize allocation across opportunities"""
        # Sort by risk-adjusted yield (APY / risk_score)
        sorted_opps = sorted(opportunities, 
                           key=lambda x: x.apy / x.risk_score, 
                           reverse=True)
        
        allocation = {}
        remaining_amount = total_amount
        
        for opp in sorted_opps:
            # Allocate up to 40% to any single protocol
            max_allocation = min(remaining_amount, total_amount * 0.4)
            allocation[opp.protocol] = int(max_allocation)
            remaining_amount -= max_allocation
            
            if remaining_amount <= 0:
                break
        
        return allocation
    
    async def execute_strategy(self, total_amount: int):
        """Execute optimized yield farming strategy"""
        print(f"Executing strategy for ${total_amount:,}")
        
        # Scan opportunities
        opportunities = await self.scan_yield_opportunities()
        print(f"Found {len(opportunities)} yield opportunities")
        
        # Optimize allocation
        allocation = self.optimize_allocation(opportunities, total_amount)
        
        # Execute allocations
        for protocol, amount in allocation.items():
            if amount > 0:
                print(f"Allocating ${amount:,} to {protocol}")
                result = self.client.initiate_defi_transaction(
                    protocol=protocol,
                    action='stake',
                    amount=amount
                )
                print(f"Transaction result: {result}")
    
    async def get_aave_apy(self, token: str) -> float:
        """Get current Aave lending APY"""
        # Implementation would query Aave API
        return 8.5  # Mock 8.5% APY
    
    async def get_compound_apy(self, token: str) -> float:
        """Get current Compound lending APY"""
        # Implementation would query Compound API
        return 7.2  # Mock 7.2% APY

# Execute strategy
async def main():
    fidelity_client = FidelityDeFiInterface(
        api_key="your_api_key",
        custody_address="0x742d35Cc6634C0532925a3b8D5c9a2935C..."
    )
    
    optimizer = FidelityYieldOptimizer(fidelity_client)
    await optimizer.execute_strategy(1000000)  # $1M allocation

# Run the strategy
asyncio.run(main())

class YieldAggregator {
  constructor(protocols, rebalanceThreshold = 0.5) {
    this.protocols = protocols;
    this.rebalanceThreshold = rebalanceThreshold; // 0.5% yield difference
    this.positions = new Map();
  }

  async monitorAndRebalance() {
    const yields = await Promise.all(
      this.protocols.map(async (protocol) => ({
        protocol: protocol.name,
        apy: await protocol.getCurrentAPY(),
        allocation: this.positions.get(protocol.name) || 0
      }))
    );

    // Find highest yield opportunity
    const bestYield = yields.reduce((max, current) => 
      current.apy > max.apy ? current : max
    );

    // Check if rebalancing is needed
    for (const yield of yields) {
      const yieldDifference = bestYield.apy - yield.apy;
      
      if (yieldDifference > this.rebalanceThreshold && yield.allocation > 0) {
        console.log(`Rebalancing from ${yield.protocol} to ${bestYield.protocol}`);
        await this.executeRebalance(yield.protocol, bestYield.protocol, yield.allocation);
      }
    }
  }

  async executeRebalance(fromProtocol, toProtocol, amount) {
    // Withdraw from lower yield protocol
    await this.protocols.find(p => p.name === fromProtocol).withdraw(amount);
    
    // Deposit to higher yield protocol
    await this.protocols.find(p => p.name === toProtocol).deposit(amount);
    
    // Update position tracking
    this.positions.set(fromProtocol, (this.positions.get(fromProtocol) || 0) - amount);
    this.positions.set(toProtocol, (this.positions.get(toProtocol) || 0) + amount);
  }
}

pragma solidity ^0.8.19;

import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract FidelityGasOptimizer is ReentrancyGuard, Ownable {
    struct BatchOperation {
        address protocol;
        bytes4 selector;
        bytes data;
        uint256 value;
    }
    
    mapping(address => bool) public authorizedProtocols;
    uint256 public constant MAX_BATCH_SIZE = 10;
    
    event BatchExecuted(uint256 operations, uint256 gasUsed);
    
    function executeBatch(BatchOperation[] calldata operations) 
        external 
        nonReentrant 
        onlyOwner 
    {
        require(operations.length <= MAX_BATCH_SIZE, "Batch too large");
        
        uint256 gasStart = gasleft();
        
        for (uint256 i = 0; i < operations.length; i++) {
            require(authorizedProtocols[operations[i].protocol], "Protocol not authorized");
            
            (bool success, bytes memory result) = operations[i].protocol.call{
                value: operations[i].value
            }(
                abi.encodePacked(operations[i].selector, operations[i].data)
            );
            
            require(success, string(result));
        }
        
        uint256 gasUsed = gasStart - gasleft();
        emit BatchExecuted(operations.length, gasUsed);
    }
    
    // Estimate gas for batch operations
    function estimateBatchGas(BatchOperation[] calldata operations) 
        external 
        view 
        returns (uint256 totalGas) 
    {
        // Implementation would estimate gas for each operation
        return operations.length * 150000; // Rough estimate
    }
}

interface PortfolioMetrics {
  totalValue: number;
  defiAllocation: number;
  averageAPY: number;
  riskScore: number;
  gasSpent: number;
}

class FidelityDeFiAnalytics {
  private readonly startTime: Date;
  private readonly initialInvestment: number;
  
  constructor(initialAmount: number) {
    this.startTime = new Date();
    this.initialInvestment = initialAmount;
  }

  async generateReport(): Promise<PortfolioMetrics> {
    const positions = await this.getAllPositions();
    const totalValue = positions.reduce((sum, pos) => sum + pos.currentValue, 0);
    
    return {
      totalValue,
      defiAllocation: this.calculateDeFiAllocation(positions),
      averageAPY: this.calculateWeightedAPY(positions),
      riskScore: this.calculatePortfolioRisk(positions),
      gasSpent: await this.getTotalGasSpent()
    };
  }

  private calculateDeFiAllocation(positions: any[]): number {
    const defiPositions = positions.filter(p => p.protocol !== 'traditional');
    const defiValue = defiPositions.reduce((sum, pos) => sum + pos.currentValue, 0);
    const totalValue = positions.reduce((sum, pos) => sum + pos.currentValue, 0);
    
    return defiValue / totalValue;
  }

  private calculateWeightedAPY(positions: any[]): number {
    const totalValue = positions.reduce((sum, pos) => sum + pos.currentValue, 0);
    const weightedYield = positions.reduce((sum, pos) => 
      sum + (pos.apy * pos.currentValue), 0
    );
    
    return weightedYield / totalValue;
  }

  private calculatePortfolioRisk(positions: any[]): number {
    // Implement risk calculation based on protocol ratings
    return positions.reduce((sum, pos) => sum + (pos.riskScore * pos.allocation), 0);
  }

  private async getAllPositions(): Promise<any[]> {
    // Implementation would fetch all positions from Fidelity and DeFi protocols
    return [];
  }

  private async getTotalGasSpent(): Promise<number> {
    // Implementation would calculate total gas costs
    return 0;
  }
}

import smtplib
from email.mime.text import MIMEText
from typing import Dict, Any

class FidelityAlertSystem:
    def __init__(self, email_config: Dict[str, str]):
        self.email_config = email_config
        self.alert_thresholds = {
            'yield_drop': 2.0,  # Alert if yield drops 2%
            'position_loss': 5.0,  # Alert if position loses 5%
            'gas_spike': 100.0,  # Alert if gas > 100 gwei
            'protocol_risk': 7.0   # Alert if protocol risk score > 7
        }
    
    async def monitor_positions(self):
        """Continuously monitor positions and send alerts"""
        positions = await self.get_all_positions()
        
        for position in positions:
            await self.check_yield_changes(position)
            await self.check_position_health(position)
            await self.check_protocol_risks(position)
    
    async def check_yield_changes(self, position: Dict[str, Any]):
        """Check for significant yield changes"""
        current_yield = position['current_apy']
        historical_yield = position['historical_apy']
        
        yield_change = historical_yield - current_yield
        
        if yield_change > self.alert_thresholds['yield_drop']:
            await self.send_alert(
                subject=f"Yield Drop Alert: {position['protocol']}",
                message=f"Yield dropped from {historical_yield:.2f}% to {current_yield:.2f}%"
            )
    
    async def send_alert(self, subject: str, message: str):
        """Send email alert"""
        msg = MIMEText(message)
        msg['Subject'] = subject
        msg['From'] = self.email_config['from']
        msg['To'] = self.email_config['to']
        
        with smtplib.SMTP(self.email_config['smtp_server']) as server:
            server.send_message(msg)
            
        print(f"Alert sent: {subject}")

# Configure alert system
alert_system = FidelityAlertSystem({
    'smtp_server': 'smtp.fidelity.com',
    'from': 'defi-alerts@fidelity.com',
    'to': 'portfolio-manager@yourfirm.com'
})

interface ComplianceRule {
  name: string;
  check: (position: any) => boolean;
  severity: 'low' | 'medium' | 'high';
  action: 'warn' | 'restrict' | 'exit';
}

class FidelityComplianceEngine {
  private rules: ComplianceRule[] = [
    {
      name: 'Maximum DeFi Allocation',
      check: (portfolio) => portfolio.defiAllocation <= 0.15,
      severity: 'high',
      action: 'restrict'
    },
    {
      name: 'Protocol Concentration Limit',
      check: (position) => position.allocation <= 0.05,
      severity: 'medium',
      action: 'warn'
    },
    {
      name: 'Minimum Credit Rating',
      check: (protocol) => protocol.creditRating >= 'B+',
      severity: 'high',
      action: 'exit'
    }
  ];

  async validateTransaction(transaction: any): Promise<boolean> {
    for (const rule of this.rules) {
      if (!rule.check(transaction)) {
        await this.handleViolation(rule, transaction);
        
        if (rule.action === 'restrict') {
          return false;
        }
      }
    }
    
    return true;
  }

  private async handleViolation(rule: ComplianceRule, transaction: any) {
    console.log(`Compliance violation: ${rule.name}`);
    
    switch (rule.action) {
      case 'warn':
        await this.logWarning(rule, transaction);
        break;
      case 'restrict':
        await this.restrictTransaction(rule, transaction);
        break;
      case 'exit':
        await this.initiateExit(rule, transaction);
        break;
    }
  }

  private async logWarning(rule: ComplianceRule, transaction: any) {
    // Log compliance warning
    console.log(`Warning: ${rule.name} - ${rule.severity} severity`);
  }

  private async restrictTransaction(rule: ComplianceRule, transaction: any) {
    // Block transaction execution
    throw new Error(`Transaction blocked: ${rule.name}`);
  }

  private async initiateExit(rule: ComplianceRule, transaction: any) {
    // Automatically exit position
    console.log(`Auto-exit initiated: ${rule.name}`);
  }
}

import asyncio
from datetime import datetime, timezone
import statistics

class GasOptimizer:
    def __init__(self):
        self.gas_history = []
        self.optimal_gas_threshold = 50  # gwei
        
    async def get_current_gas_price(self) -> int:
        """Get current network gas price"""
        # Implementation would query gas price from node
        return 45  # Mock gas price in gwei
    
    async def predict_optimal_execution_time(self) -> datetime:
        """Predict best time to execute transactions"""
        current_hour = datetime.now(timezone.utc).hour
        
        # Historical data shows lower gas prices during these hours (UTC)
        optimal_hours = [2, 3, 4, 5, 6, 7, 8, 14]  # Early morning and early afternoon
        
        if current_hour in optimal_hours:
            return datetime.now(timezone.utc)
        else:
            # Wait for next optimal window
            next_optimal = min([h for h in optimal_hours if h > current_hour], default=optimal_hours[0])
            target_time = datetime.now(timezone.utc).replace(hour=next_optimal, minute=0, second=0)
            
            if next_optimal < current_hour:  # Next day
                target_time = target_time.replace(day=target_time.day + 1)
                
            return target_time
    
    async def execute_when_optimal(self, transaction_func, max_wait_hours=6):
        """Execute transaction when gas conditions are optimal"""
        optimal_time = await self.predict_optimal_execution_time()
        current_time = datetime.now(timezone.utc)
        
        wait_seconds = (optimal_time - current_time).total_seconds()
        
        if wait_seconds > 0 and wait_seconds < (max_wait_hours * 3600):
            print(f"Waiting {wait_seconds/3600:.1f} hours for optimal gas conditions")
            await asyncio.sleep(wait_seconds)
        
        current_gas = await self.get_current_gas_price()
        print(f"Executing transaction at {current_gas} gwei")
        
        return await transaction_func()

# Usage example
async def execute_yield_farming_transaction():
    """Example transaction function"""
    print("Executing DeFi yield farming transaction...")
    return {"status": "success", "tx_hash": "0x123..."}

gas_optimizer = GasOptimizer()
result = await gas_optimizer.execute_when_optimal(execute_yield_farming_transaction)