Executor Agent

The Executor Agent is a sophisticated transaction execution agent that processes DeFi tasks, simulates transactions, and manages the execution pipeline for complex blockchain operations. It serves as the execution engine of the Ava Portfolio Manager system.

Overview

The Executor Agent acts as the primary execution layer that receives tasks from the Task Manager, categorizes them based on their type, converts natural language tasks into executable transactions, and manages the complete execution pipeline with comprehensive error handling and recovery mechanisms.

Key Features

• Task Classification System: Automatically categorizes tasks into DeFi execution, observation, analysis, or unknown types

• Transaction Processing Pipeline: Complete pipeline from task validation to execution

• Brian API Integration: Natural language to transaction conversion using Brian API

• Transaction Simulation: Comprehensive simulation before execution

• Intelligent Routing: Routes non-execution tasks to appropriate agents

• Comprehensive Error Handling: Robust error handling and recovery mechanisms

• Performance Optimization: Efficient processing with parallel execution support

Architecture

The Executor Agent follows a layered architecture designed for reliability and performance:

interface ExecutorAgentArchitecture {
  // Core Components
  account: Account;                 // Blockchain account for transactions
  eventBus: EventBus;              // Communication with other agents
  storage: StorageInterface;        // Persistent storage
  atcpipProvider: ATCPIPProvider;   // IP licensing system
  
  // Processing Pipeline
  taskClassifier: TaskClassifier;   // Categorizes incoming tasks
  transactionProcessor: TransactionProcessor; // Processes transactions
  simulator: TransactionSimulator;  // Simulates transactions
  executor: TransactionExecutor;    // Executes transactions
  
  // Task Classification
  taskTypes: {
    'defi_execution': DeFiExecutionHandler;
    'observation': ObservationHandler;
    'analysis': AnalysisHandler;
    'unknown': UnknownTaskHandler;
  };
  
  // Tools and Capabilities
  toolkit: ExecutorToolkit;         // Execution tools
  brianAPI: BrianAPIIntegration;    // Natural language processing
  odosAPI: OdosAPIIntegration;      // Swap execution
}

Core Components

Task Classification System

The Executor Agent automatically classifies incoming tasks into categories:

type TaskType = 'defi_execution' | 'observation' | 'analysis' | 'unknown';

interface TaskClassification {
  // DeFi Execution Keywords
  defiKeywords: [
    'swap', 'bridge', 'transfer', 'send', 'buy', 'sell',
    'deposit', 'withdraw', 'stake', 'unstake', 'provide liquidity',
    'remove liquidity', 'borrow', 'repay', 'leverage', 'long', 'short'
  ];
  
  // Observation Keywords
  observationKeywords: [
    'monitor', 'check', 'analyze', 'observe', 'track',
    'get market data', 'get price', 'get balance', 'fetch',
    'retrieve', 'watch', 'review'
  ];
  
  // Analysis Keywords
  analysisKeywords: [
    'analysis', 'report', 'evaluate', 'assess', 'compare'
  ];
}

Transaction Processing Pipeline

Comprehensive transaction processing with multiple stages:

interface TransactionPipeline {
  // Stage 1: Task Validation
  validateTask: (data: TaskData) => ValidationResult;
  
  // Stage 2: Transaction Data Retrieval
  getTransactionData: (tasks: Task[]) => Promise<TransactionData[]>;
  
  // Stage 3: Transaction Simulation
  simulateTransaction: (txData: TransactionData) => Promise<SimulationResult>;
  
  // Stage 4: Execution
  executeTransaction: (txData: TransactionData) => Promise<ExecutionResult>;
  
  // Stage 5: Result Storage
  storeResult: (result: ExecutionResult) => Promise<void>;
}

Brian API Integration

Advanced natural language processing using Brian API:

interface BrianAPIIntegration {
  // Convert natural language to transaction
  convertToTransaction: async (prompt: string) => {
    const response = await fetch(`${BRIAN_API_URL}/agent/transaction`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'x-brian-api-key': process.env.BRIAN_API_KEY
      },
      body: JSON.stringify({
        prompt,
        chainId: process.env.CHAIN_ID,
        address: account.address
      })
    });
    
    const { result } = await response.json();
    return result[0].data;
  };
  
  // Transaction data structure
  transactionData: {
    description: string;
    steps: TransactionStep[];
    fromToken: TokenInfo;
    toToken: TokenInfo;
    fromAmount: string;
    outputAmount: string;
    gasCost: string;
    gasEstimate: string;
  };
}

Advanced Tools and Capabilities

Transaction Data Tool

Comprehensive transaction data processing:

const getTransactionDataTool = {
  description: "Transform tasks into executable transactions",
  parameters: {
    tasks: [{
      task: "string",
      taskId: "string | null"
    }]
  },
  
  execute: async (args: TaskArgs) => {
    const transactions = await Promise.all(
      args.tasks.map(async ({ task, taskId }) => {
        // Fetch transaction data from Brian API
        const brianResponse = await fetch(`${BRIAN_API_URL}/agent/transaction`, {
          method: 'POST',
          body: JSON.stringify({
            prompt: task,
            chainId: env.CHAIN_ID,
            address: account.address
          }),
          headers: {
            'Content-Type': 'application/json',
            'x-brian-api-key': env.BRIAN_API_KEY
          }
        });
        
        const { result } = await brianResponse.json();
        const data = result[0].data;
        
        return {
          task,
          taskId,
          description: data.description,
          steps: data.steps,
          fromToken: data.fromToken,
          toToken: data.toToken,
          fromAmount: data.fromAmount,
          outputAmount: data.outputAmount,
          gasCost: data.gasCost
        };
      })
    );
    
    return { success: true, result: transactions };
  }
};

Transaction Simulation Tool

Advanced transaction simulation capabilities:

const simulateTransactionTool = {
  description: "Simulate transactions before execution",
  parameters: {
    bucketId: "string",
    riskLevel: "low | medium | high"
  },
  
  execute: async (args: SimulationArgs) => {
    const tasks = await retrieveTasksFromBucket(args.bucketId);
    const simulationResults = [];
    
    for (const task of tasks) {
      try {
        // Simulate each transaction step
        const stepSimulations = await Promise.all(
          task.steps.map(async (step) => {
            const simulation = await simulateTransactionStep({
              to: step.to,
              value: step.value,
              data: step.data,
              gasLimit: step.gasLimit
            });
            
            return {
              step: step.stepId,
              success: simulation.success,
              gasUsed: simulation.gasUsed,
              changes: simulation.stateChanges,
              warnings: simulation.warnings
            };
          })
        );
        
        simulationResults.push({
          taskId: task.taskId,
          success: stepSimulations.every(s => s.success),
          simulations: stepSimulations,
          totalGasUsed: stepSimulations.reduce((sum, s) => sum + s.gasUsed, 0),
          estimatedCost: calculateEstimatedCost(stepSimulations)
        });
        
      } catch (error) {
        simulationResults.push({
          taskId: task.taskId,
          success: false,
          error: error.message
        });
      }
    }
    
    return { success: true, result: simulationResults };
  }
};

Transaction Execution Tool

Comprehensive transaction execution:

const executeTransactionTool = {
  description: "Execute transactions in chronological order",
  parameters: {
    task: "string",
    taskId: "string"
  },
  
  execute: async (args: ExecutionArgs) => {
    const { data: taskData } = await retrieveTaskById(args.taskId);
    
    if (!taskData) {
      return {
        success: false,
        error: `Transaction not found for task: "${args.task}" [id: ${args.taskId}]`
      };
    }
    
    // Create wallet and public clients
    const walletClient = createWalletClient({
      account,
      chain: getChain(parseInt(env.CHAIN_ID)),
      transport: http()
    });
    
    const publicClient = createPublicClient({
      chain: getChain(parseInt(env.CHAIN_ID)),
      transport: http()
    });
    
    const transactionHashes = [];
    
    // Execute each step sequentially
    for (const step of taskData[0].steps) {
      try {
        // Send transaction
        const hash = await walletClient.sendTransaction({
          to: step.to,
          value: BigInt(step.value),
          data: step.data
        });
        
        console.log(`Transaction sent: ${hash}`);
        
        // Wait for confirmation
        const receipt = await publicClient.waitForTransactionReceipt({ hash });
        console.log(`Transaction confirmed: ${receipt.transactionHash}`);
        
        transactionHashes.push(receipt.transactionHash);
        
      } catch (error) {
        console.error(`Transaction failed: ${error}`);
        return {
          success: false,
          error: `Transaction failed: ${error.message}`
        };
      }
    }
    
    // Clean up completed task
    await deleteTask(args.taskId);
    
    return {
      success: true,
      result: `Transaction executed successfully. Hashes: ${transactionHashes.join(', ')}`
    };
  }
};

Odos Swap Integration

Advanced swap execution using Odos API:

const odosSwapTool = {
  description: "Execute optimal swaps using Odos API",
  parameters: {
    chainId: "number",
    fromToken: "string",
    toToken: "string",
    fromAmount: "string"
  },
  
  execute: async (args: SwapArgs) => {
    // Get quote from Odos
    const quoteResponse = await fetch('https://api.odos.xyz/sor/quote/v2', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        chainId: args.chainId,
        inputTokens: [{
          tokenAddress: args.fromToken,
          amount: args.fromAmount
        }],
        outputTokens: [{
          tokenAddress: args.toToken,
          proportion: 1
        }],
        userAddr: account.address,
        slippageLimitPercent: 0.3
      })
    });
    
    const quote = await quoteResponse.json();
    
    // Assemble transaction
    const assembleResponse = await fetch('https://api.odos.xyz/sor/assemble', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        userAddr: account.address,
        pathId: quote.pathId,
        simulate: true
      })
    });
    
    const assembledTransaction = await assembleResponse.json();
    
    // Execute transaction
    const walletClient = createWalletClient({
      account,
      chain: getChain(parseInt(env.CHAIN_ID)),
      transport: http()
    });
    
    const publicClient = createPublicClient({
      chain: getChain(parseInt(env.CHAIN_ID)),
      transport: http()
    });
    
    const hash = await walletClient.sendTransaction(assembledTransaction.transaction);
    const receipt = await publicClient.waitForTransactionReceipt({ hash });
    
    return {
      success: true,
      result: `Swap executed successfully. Hash: ${receipt.transactionHash}`
    };
  }
};

Event System Integration

Task Processing Pipeline

The Executor Agent processes tasks through a comprehensive pipeline:

interface TaskProcessingPipeline {
  // Task Reception
  handleTaskManagerEvent: async (data: TaskData) => {
    const { taskId, task, type } = data;
    
    // Validate task data
    if (!taskId || !task) {
      throw new Error('Invalid task data: missing taskId or task');
    }
    
    // Determine task type
    const taskType = this.determineTaskType(task);
    
    // Store task in memory
    await this.storeIntelligence(`task:${taskId}`, {
      task,
      type: taskType,
      status: 'in_progress',
      timestamp: Date.now()
    });
    
    // Process based on type
    switch (taskType) {
      case 'defi_execution':
        return await this.processDeFiExecution(data);
      case 'observation':
        return await this.routeToObserver(data);
      case 'analysis':
        return await this.routeToAnalyst(data);
      default:
        return await this.handleUnknownTask(data);
    }
  };
  
  // DeFi Execution Processing
  processDeFiExecution: async (data: TaskData) => {
    const executorTools = getExecutorToolkit(this.account);
    
    // Get transaction data
    const txDataResult = await executorTools.getTransactionData.execute({
      tasks: [{ task: data.task, taskId: data.taskId }],
      bucketId: `task-bucket-${Date.now()}`
    });
    
    if (!txDataResult.success) {
      throw new Error(`Failed to get transaction data: ${txDataResult.error}`);
    }
    
    // Simulate transaction
    const simulationResult = await executorTools.simulateTasks.execute({
      bucketId: `task-bucket-${Date.now()}`
    });
    
    if (!simulationResult.success) {
      throw new Error(`Transaction simulation failed: ${simulationResult.error}`);
    }
    
    // Execute if simulation successful
    if (simulationResult.result.every(r => r.success)) {
      const executionResult = await executorTools.executeTransaction.execute({
        task: data.task,
        taskId: data.taskId
      });
      
      return executionResult;
    }
    
    return { success: false, error: 'Transaction simulation failed' };
  };
}

Intelligent Routing System

Advanced routing for non-execution tasks:

interface IntelligentRouting {
  // Route observation tasks to Observer Agent
  routeToObserver: async (data: TaskData) => {
    console.log(`Routing observation task to Observer Agent: ${data.task}`);
    
    this.eventBus.emit('executor-observer', {
      taskId: data.taskId,
      task: data.task,
      type: 'observation',
      source: 'executor',
      timestamp: Date.now()
    });
    
    return { success: true, result: 'Task routed to Observer Agent' };
  };
  
  // Route analysis tasks to appropriate analyst
  routeToAnalyst: async (data: TaskData) => {
    console.log(`Routing analysis task to Task Manager: ${data.task}`);
    
    this.eventBus.emit('executor-task-manager', {
      taskId: data.taskId,
      task: data.task,
      type: 'analysis',
      source: 'executor',
      timestamp: Date.now()
    });
    
    return { success: true, result: 'Task routed to Task Manager for analysis' };
  };
  
  // Handle unknown tasks
  handleUnknownTask: async (data: TaskData) => {
    console.log(`Handling unknown task: ${data.task}`);
    
    // Route back to Task Manager for clarification
    this.eventBus.emit('executor-task-manager', {
      taskId: data.taskId,
      task: data.task,
      type: 'clarification_needed',
      source: 'executor',
      timestamp: Date.now()
    });
    
    return { success: true, result: 'Task sent back for clarification' };
  };
}

Performance Optimization

Parallel Processing

Efficient parallel processing for multiple tasks:

const parallelProcessing = {
  // Process multiple tasks concurrently
  processTasksConcurrently: async (tasks: Task[]) => {
    const batches = chunkArray(tasks, 5); // Process in batches of 5
    const results = [];
    
    for (const batch of batches) {
      const batchResults = await Promise.all(
        batch.map(task => this.processTask(task))
      );
      results.push(...batchResults);
    }
    
    return results;
  },
  
  // Parallel transaction simulation
  simulateTransactionsConcurrently: async (txData: TransactionData[]) => {
    const simulations = await Promise.all(
      txData.map(async (tx) => {
        return await this.simulateTransaction(tx);
      })
    );
    
    return simulations;
  },
  
  // Parallel execution with dependencies
  executeWithDependencies: async (tasks: Task[]) => {
    const dependencyGraph = this.buildDependencyGraph(tasks);
    const executionOrder = this.topologicalSort(dependencyGraph);
    
    const results = [];
    for (const taskBatch of executionOrder) {
      const batchResults = await Promise.all(
        taskBatch.map(task => this.executeTask(task))
      );
      results.push(...batchResults);
    }
    
    return results;
  }
};

Memory Management

Optimized memory usage and cleanup:

const memoryManagement = {
  // Efficient result storage
  storeResults: async (results: ExecutionResult[]) => {
    const bucketId = `execution-results-${Date.now()}`;
    
    // Store in batches to avoid memory issues
    const batches = chunkArray(results, 10);
    
    for (const batch of batches) {
      await this.storage.store(bucketId, batch);
    }
    
    // Schedule cleanup
    setTimeout(() => {
      this.cleanupOldResults(bucketId);
    }, 24 * 60 * 60 * 1000); // 24 hours
  },
  
  // Cleanup old data
  cleanupOldResults: async (bucketId: string) => {
    const cutoffTime = Date.now() - (7 * 24 * 60 * 60 * 1000); // 7 days
    
    const oldResults = await this.storage.query(bucketId, {
      timestamp: { $lt: cutoffTime }
    });
    
    for (const result of oldResults) {
      await this.storage.delete(result.id);
    }
  },
  
  // Memory optimization
  optimizeMemoryUsage: () => {
    // Clear completed task results
    this.taskResults.forEach((result, taskId) => {
      if (result.timestamp < Date.now() - 60 * 60 * 1000) { // 1 hour
        this.taskResults.delete(taskId);
      }
    });
    
    // Force garbage collection if available
    if (global.gc) {
      global.gc();
    }
  }
};

Error Handling and Recovery

Comprehensive Error Handling

Advanced error handling for all execution scenarios:

interface ErrorHandling {
  // Transaction error handling
  handleTransactionError: (error: TransactionError) => {
    switch (error.code) {
      case 'INSUFFICIENT_FUNDS':
        return {
          recoverable: false,
          message: 'Insufficient funds for transaction',
          recommendation: 'Add funds to wallet'
        };
      
      case 'GAS_LIMIT_EXCEEDED':
        return {
          recoverable: true,
          message: 'Gas limit exceeded',
          recommendation: 'Increase gas limit and retry'
        };
      
      case 'NONCE_TOO_LOW':
        return {
          recoverable: true,
          message: 'Transaction nonce too low',
          recommendation: 'Update nonce and retry'
        };
      
      case 'NETWORK_ERROR':
        return {
          recoverable: true,
          message: 'Network connectivity issue',
          recommendation: 'Retry with exponential backoff'
        };
      
      default:
        return {
          recoverable: false,
          message: 'Unknown transaction error',
          recommendation: 'Manual intervention required'
        };
    }
  };
  
  // Retry mechanism
  retryWithBackoff: async (operation: () => Promise<any>, maxRetries: number = 3) => {
    let lastError;
    
    for (let attempt = 0; attempt < maxRetries; attempt++) {
      try {
        return await operation();
      } catch (error) {
        lastError = error;
        
        const errorInfo = this.handleTransactionError(error);
        if (!errorInfo.recoverable) {
          throw error;
        }
        
        // Exponential backoff
        const delay = Math.pow(2, attempt) * 1000;
        await new Promise(resolve => setTimeout(resolve, delay));
      }
    }
    
    throw lastError;
  };
  
  // Recovery strategies
  recoverFromFailure: async (taskId: string, error: Error) => {
    // Store failure information
    await this.storeIntelligence(`failure:${taskId}`, {
      error: error.message,
      timestamp: Date.now(),
      recoveryAttempts: 0
    });
    
    // Attempt recovery based on error type
    if (error.message.includes('insufficient funds')) {
      return await this.requestFundsFromUser(taskId);
    } else if (error.message.includes('gas')) {
      return await this.adjustGasAndRetry(taskId);
    } else if (error.message.includes('network')) {
      return await this.retryWithDifferentRPC(taskId);
    }
    
    // If no recovery possible, escalate
    return await this.escalateToHuman(taskId, error);
  };
}

Simulation Safety

Comprehensive simulation before execution:

interface SimulationSafety {
  // Pre-execution simulation
  simulateBeforeExecution: async (txData: TransactionData) => {
    const simulation = await this.simulateTransaction(txData);
    
    if (!simulation.success) {
      throw new Error(`Simulation failed: ${simulation.error}`);
    }
    
    // Check simulation results
    if (simulation.gasUsed > simulation.gasLimit * 0.9) {
      throw new Error('Gas usage too high, transaction may fail');
    }
    
    if (simulation.stateChanges.some(change => change.risk === 'high')) {
      throw new Error('High-risk state changes detected');
    }
    
    return simulation;
  };
  
  // Safety checks
  performSafetyChecks: (txData: TransactionData) => {
    const checks = [];
    
    // Balance check
    if (txData.fromAmount > this.getTokenBalance(txData.fromToken)) {
      checks.push({ type: 'balance', severity: 'error', message: 'Insufficient balance' });
    }
    
    // Slippage check
    if (txData.slippage > 0.05) { // 5%
      checks.push({ type: 'slippage', severity: 'warning', message: 'High slippage detected' });
    }
    
    // Gas price check
    if (txData.gasPrice > this.getAverageGasPrice() * 2) {
      checks.push({ type: 'gas', severity: 'warning', message: 'High gas price' });
    }
    
    return checks;
  };
}

Integration with Other Agents

Task Manager Integration

Comprehensive integration with Task Manager:

const taskManagerIntegration = {
  // Handle task assignments
  handleTaskAssignment: async (data: TaskAssignment) => {
    const { taskId, task, priority, deadline } = data;
    
    // Validate task
    const validation = await this.validateTask(task);
    if (!validation.valid) {
      this.eventBus.emit('executor-task-manager', {
        taskId,
        status: 'invalid',
        error: validation.error,
        timestamp: Date.now()
      });
      return;
    }
    
    // Process task
    const result = await this.processTask(task);
    
    // Return result
    this.eventBus.emit('executor-task-manager', {
      taskId,
      result,
      status: 'completed',
      timestamp: Date.now()
    });
  },
  
  // Provide status updates
  provideStatusUpdates: (taskId: string, status: TaskStatus) => {
    this.eventBus.emit('executor-task-manager', {
      taskId,
      status,
      timestamp: Date.now(),
      type: 'status_update'
    });
  }
};

Observer Agent Coordination

Coordination with Observer Agent for market data:

const observerIntegration = {
  // Request market data before execution
  requestMarketData: async (tokens: string[]) => {
    return new Promise((resolve) => {
      const requestId = uuidv4();
      
      // Listen for response
      this.eventBus.once(`observer-executor-${requestId}`, (data) => {
        resolve(data);
      });
      
      // Send request
      this.eventBus.emit('executor-observer', {
        requestId,
        type: 'market_data_request',
        tokens,
        timestamp: Date.now()
      });
    });
  },
  
  // Get execution recommendations
  getExecutionRecommendations: async (task: Task) => {
    return new Promise((resolve) => {
      const requestId = uuidv4();
      
      this.eventBus.once(`observer-executor-${requestId}`, (data) => {
        resolve(data);
      });
      
      this.eventBus.emit('executor-observer', {
        requestId,
        type: 'execution_recommendation',
        task,
        timestamp: Date.now()
      });
    });
  }
};

Security and Safety

Transaction Security

Comprehensive security measures:

const transactionSecurity = {
  // Validate transaction parameters
  validateTransaction: (txData: TransactionData) => {
    const validations = [];
    
    // Address validation
    if (!isValidAddress(txData.to)) {
      validations.push({ type: 'address', message: 'Invalid recipient address' });
    }
    
    // Amount validation
    if (txData.value <= 0) {
      validations.push({ type: 'amount', message: 'Invalid transaction amount' });
    }
    
    // Gas validation
    if (txData.gasLimit < 21000) {
      validations.push({ type: 'gas', message: 'Gas limit too low' });
    }
    
    return validations;
  },
  
  // Signature validation
  validateSignature: async (txData: TransactionData) => {
    const signature = await this.account.signTransaction(txData);
    return this.verifySignature(signature, txData);
  },
  
  // Multi-signature support
  multiSignatureValidation: async (txData: TransactionData) => {
    const requiredSignatures = await this.getRequiredSignatures(txData);
    const signatures = await this.collectSignatures(txData);
    
    return signatures.length >= requiredSignatures;
  }
};

Access Control

Sophisticated access control system:

const accessControl = {
  // Role-based permissions
  permissions: {
    execute_transaction: ['admin', 'executor'],
    simulate_transaction: ['admin', 'executor', 'observer'],
    view_results: ['admin', 'executor', 'observer', 'user']
  },
  
  // Validate execution permissions
  validateExecutionPermissions: (user: User, txData: TransactionData) => {
    const userRole = this.getUserRole(user);
    const requiredPermissions = this.getRequiredPermissions(txData);
    
    return requiredPermissions.every(permission => 
      this.permissions[permission].includes(userRole)
    );
  },
  
  // Transaction limits
  transactionLimits: {
    maxDailyVolume: 1000000, // $1M USD
    maxSingleTransaction: 100000, // $100K USD
    maxGasPrice: 100 // 100 gwei
  }
};

Configuration and Environment

Environment Configuration

# Brian API Configuration
BRIAN_API_KEY=your_brian_api_key
BRIAN_API_URL=https://api.brianknows.org/api/v0

# Blockchain Configuration
CHAIN_ID=1
NETWORK_ID=1
RPC_URL=https://mainnet.infura.io/v3/your-key

# Account Configuration
PRIVATE_KEY=your_private_key
WALLET_ADDRESS=your_wallet_address

# Execution Configuration
MAX_GAS_PRICE=100000000000  # 100 gwei
MAX_TRANSACTION_AMOUNT=1000000000000000000  # 1 ETH
SIMULATION_TIMEOUT=30000  # 30 seconds
EXECUTION_TIMEOUT=300000  # 5 minutes

# Safety Configuration
REQUIRE_SIMULATION=true
MAX_SLIPPAGE=0.05  # 5%
CONFIRM_HIGH_VALUE=true
HIGH_VALUE_THRESHOLD=10000000000000000000  # 10 ETH

Performance Configuration

const performanceConfig = {
  // Execution configuration
  execution: {
    maxConcurrentTasks: 5,
    batchSize: 10,
    timeout: 300000, // 5 minutes
    retryAttempts: 3,
    retryDelay: 1000 // 1 second
  },
  
  // Simulation configuration
  simulation: {
    enabled: true,
    timeout: 30000, // 30 seconds
    maxSimulations: 100,
    cacheResults: true,
    cacheTTL: 300000 // 5 minutes
  },
  
  // Memory management
  memory: {
    maxResultsCache: 1000,
    cleanupInterval: 3600000, // 1 hour
    maxMemoryUsage: 512 * 1024 * 1024 // 512MB
  }
};

Monitoring and Analytics

Execution Metrics

Comprehensive execution monitoring:

const executionMetrics = {
  // Performance metrics
  performance: {
    averageExecutionTime: 'number',
    successRate: 'number',
    failureRate: 'number',
    throughput: 'number',
    latency: 'number'
  },
  
  // Transaction metrics
  transactions: {
    totalExecuted: 'number',
    totalValue: 'number',
    averageGasUsed: 'number',
    averageGasPrice: 'number',
    successfulTransactions: 'number',
    failedTransactions: 'number'
  },
  
  // Error metrics
  errors: {
    totalErrors: 'number',
    errorsByType: 'object',
    recoveredErrors: 'number',
    unrecoveredErrors: 'number'
  }
};

Health Monitoring

Real-time health monitoring:

const healthMonitoring = {
  // System health checks
  healthChecks: {
    blockchainConnectivity: () => this.checkBlockchainConnection(),
    accountBalance: () => this.checkAccountBalance(),
    apiConnectivity: () => this.checkAPIConnectivity(),
    memoryUsage: () => this.checkMemoryUsage(),
    taskQueueStatus: () => this.checkTaskQueueStatus()
  },
  
  // Automated alerts
  alerts: {
    lowBalance: { threshold: 0.1, action: 'notify' },
    highGasPrice: { threshold: 100, action: 'pause' },
    highErrorRate: { threshold: 0.1, action: 'investigate' },
    memoryUsage: { threshold: 0.8, action: 'cleanup' }
  }
};

Future Enhancements

Planned Features

Upcoming enhancements for the Executor Agent:

• Advanced MEV Protection: Enhanced MEV protection mechanisms

• Cross-Chain Execution: Native cross-chain transaction execution

• Batch Transaction Optimization: Advanced batch transaction processing

• AI-Powered Gas Optimization: Machine learning for gas price optimization

• Advanced Simulation: More sophisticated simulation capabilities

• Multi-Protocol Support: Support for additional DeFi protocols

Research and Development

Ongoing research initiatives:

• Quantum-Safe Signatures: Research into quantum-resistant signature schemes

• Zero-Knowledge Proofs: Integration of ZK proofs for privacy

• Formal Verification: Formal verification of transaction logic

• Decentralized Execution: Distributed execution across multiple nodes

• Advanced Analytics: Machine learning for execution optimization

Conclusion

The Executor Agent represents a sophisticated advancement in blockchain transaction execution technology. By combining intelligent task classification, comprehensive simulation capabilities, and robust execution mechanisms, it provides a reliable and secure platform for executing complex DeFi operations.

Its integration with Brian API for natural language processing, comprehensive error handling and recovery mechanisms, and seamless coordination with other agents make it an essential component of the Ava Portfolio Manager system. The Executor Agent's ability to handle complex multi-step transactions while maintaining the highest standards of security and performance makes it a critical tool for automated DeFi portfolio management.

Through continuous optimization and enhancement, the Executor Agent continues to evolve to meet the growing demands of the DeFi ecosystem, providing users with a powerful and reliable execution platform for their financial operations.