3-2. MCP Layer Architecture

Overview

The MCP (Model Context Protocol) Layer Architecture is the functional core of the Mei system, employing a modular design philosophy. Like building with LEGO blocks, each MCP layer is an independent functional module that can be flexibly combined and extended. This design allows Mei to dynamically invoke appropriate functions based on user needs while providing a clear tiered structure for premium features.

Architectural Design Philosophy

Layered Modularization

The MCP layers adopt a tiered design, progressing from basic functions to advanced features:

Premium MCP Layers
├── Token Sniffing Layer
├── Wallet Indexing Layer  
├── API Call Layer
└── Direct Send Layer

Core MCP Layers
├── Authentication Layer
├── Blockchain Connection Layer
├── Data Sync Layer
└── Basic Query Layer

Infrastructure Layer
├── Security Layer
├── Cache Layer
└── Logging Layer

Block Configuration System

Users can flexibly customize function combinations through block-based configuration, as simple as customizing a phone's home screen.

Configuration Example

{
  "userProfile": "trader_advanced",
  "activeLayers": [
    "authentication",
    "blockchainConnection", 
    "tokenSniffing",
    "walletIndexing",
    "directSend"
  ],
  "layerConfigs": {
    "tokenSniffing": {
      "alertThreshold": 0.05,
      "monitoredPairs": ["SOL/USDC", "RAY/SOL"],
      "riskLevel": "medium"
    }
  }
}

Core MCP Layer Details

Authentication Layer

Handles user identity verification and permission management to ensure system security.

Core Functions

• Wallet Connection Verification: Supports mainstream Solana wallets like Phantom and Solflare

• Session Management: Secure user session maintenance

• Permission Control: Role-based functional access control

Technical Implementation

interface AuthenticationLayer {
  async connectWallet(walletAdapter: WalletAdapter): Promise<AuthResult>;
  async verifySignature(message: string, signature: string): Promise<boolean>;
  async refreshSession(sessionToken: string): Promise<SessionData>;
}

Blockchain Connection Layer

Manages connections and communications with the Solana network.

Core Functions

• Node Management: Intelligent selection of optimal RPC nodes

• Connection Pooling: Efficient connection reuse mechanisms

• Network Monitoring: Real-time monitoring of network status and performance

Connection Optimization

class BlockchainConnection {
  private rpcEndpoints = [
    'https://api.mainnet-beta.solana.com',
    'https://solana-api.projectserum.com',
    'https://rpc.ankr.com/solana'
  ];
  
  async selectOptimalRPC(): Promise<string> {
    // Latency testing and load balancing
    const results = await Promise.all(
      this.rpcEndpoints.map(endpoint => this.testLatency(endpoint))
    );
    return this.getBestEndpoint(results);
  }
}

Data Sync Layer

Handles real-time synchronization and local caching of on-chain data.

Synchronization Strategy

• Incremental Sync: Only syncs changed data, reducing bandwidth consumption

• Intelligent Prefetching: Predicts user needs and fetches relevant data in advance

• Conflict Resolution: Handles concurrent data update conflicts

Premium MCP Layer Details

Token Sniffing Layer

Real-time monitoring and analysis of newly issued tokens, providing investment opportunity discovery for users.

Core Capabilities

• New Token Discovery: Real-time monitoring of new token issuance on the Solana network

• Risk Assessment: Multi-dimensional metric-based token risk evaluation

• Trend Analysis: Analysis of market trends and trading patterns

Monitoring Mechanism

interface TokenSniffing {
  // Real-time monitoring configuration
  monitoringConfig: {
    newTokenAlert: boolean;
    priceThreshold: number;
    volumeThreshold: number;
    liquidityThreshold: number;
  };
  
  // Risk assessment model
  riskAssessment: {
    contractSecurity: number;    // Contract security score
    liquidityStability: number; // Liquidity stability
    teamCredibility: number;     // Team credibility
    marketSentiment: number;     // Market sentiment
  };
}

Smart Alert System

When discovering new tokens that match user preferences, Mei proactively alerts:

"Hey! I found an interesting new token $EXAMPLE
✅ Contract verified, security score 8.5/10
📊 Initial liquidity $500K
👥 Team members publicly transparent
⚠️  Note: Trading volume is still relatively low, suggest small position testing"

Wallet Indexing Layer

Comprehensive analysis of user wallet assets and transaction history.

Feature Characteristics

• Multi-Wallet Integration: Unified management of multiple wallet addresses

• Asset Classification: Smart categorization of DeFi, NFT, GameFi, and other asset types

• Profit Analysis: Detailed P&L analysis and yield rate calculations

• Transaction Insights: Mining transaction patterns and optimization recommendations

Data Structure

interface WalletIndex {
  walletAddress: string;
  assets: {
    tokens: TokenHolding[];
    nfts: NFTCollection[];
    defiPositions: DeFiPosition[];
  };
  analytics: {
    totalValue: number;
    profitLoss: number;
    riskScore: number;
    diversificationScore: number;
  };
  insights: string[];
}

API Call Layer

Integrates third-party services and data sources, expanding Mei's capability boundaries.

Integrated Services

• Price Data: CoinGecko, CoinMarketCap real-time prices

• News Information: Cryptocurrency news and market analysis

• Social Media: Twitter, Discord sentiment analysis

• On-Chain Analysis: Professional data from Dune Analytics, Nansen, etc.

API Management

class APICallLayer {
  private rateLimiter: RateLimiter;
  private apiKeys: Map<string, string>;
  
  async callExternalAPI(service: string, endpoint: string, params: any) {
    // Rate limit check
    await this.rateLimiter.checkLimit(service);
    
    // API key management
    const apiKey = this.apiKeys.get(service);
    
    // Request execution and error handling
    return await this.executeWithRetry(service, endpoint, params, apiKey);
  }
}

Direct Send Layer

Executes actual blockchain transaction operations.

Security Features

• Transaction Preview: Detailed display of transaction content before execution

• Multi-Step Confirmation: Important operations require multiple confirmations

• Smart Fee Management: Automatic gas fee optimization

• Transaction Monitoring: Real-time transaction status tracking

Transaction Flow

interface DirectSendFlow {
  // 1. Transaction building
  buildTransaction(intent: UserIntent): Promise<Transaction>;
  
  // 2. Security check
  securityCheck(transaction: Transaction): Promise<SecurityReport>;
  
  // 3. User confirmation
  requestUserConfirmation(preview: TransactionPreview): Promise<boolean>;
  
  // 4. Execute transaction
  executeTransaction(transaction: Transaction): Promise<TransactionResult>;
  
  // 5. Result tracking
  trackExecution(txHash: string): Promise<ExecutionStatus>;
}

Inter-Layer Communication Mechanisms

Message Passing System

MCP layers communicate through standardized message protocols.

interface MCPMessage {
  id: string;
  from: string;        // Source MCP layer
  to: string;          // Target MCP layer
  type: MessageType;   // Message type
  payload: any;        // Message content
  timestamp: number;
  priority: Priority;  // Priority level
}

Data Sharing Mechanism

Implements inter-layer data sharing through shared data storage, avoiding redundant computations.

interface SharedDataStore {
  set(key: string, value: any, ttl?: number): Promise<void>;
  get(key: string): Promise<any>;
  invalidate(pattern: string): Promise<void>;
  subscribe(pattern: string, callback: Function): void;
}

Performance Optimization Strategies

Lazy Loading Mechanism

MCP layers are only loaded when users actually need specific functionality.

Parallel Processing

Multiple MCP layers can process different parts of user requests in parallel, improving overall response speed.

Caching Strategy

Intelligent caching mechanisms reduce redundant computations and network requests.

Premium Model Integration

Subscription Management

interface SubscriptionManager {
  checkAccess(userId: string, layer: string): Promise<boolean>;
  upgradeSubscription(userId: string, tier: SubscriptionTier): Promise<void>;
  getUsageStats(userId: string): Promise<UsageStatistics>;
}

Advanced Layer Features

Layer Orchestration

Sophisticated coordination between layers for complex operations:

interface LayerOrchestrator {
  // Coordinate multiple layers for complex workflows
  async orchestrateWorkflow(
    workflow: WorkflowDefinition,
    context: ExecutionContext
  ): Promise<WorkflowResult>;
  
  // Manage layer dependencies
  resolveDependencies(layers: string[]): Promise<DependencyGraph>;
  
  // Optimize execution order
  optimizeExecution(tasks: Task[]): Promise<OptimizedPlan>;
}

Dynamic Layer Loading

Load and unload layers based on user needs and system performance:

interface DynamicLoader {
  // Load layer on demand
  async loadLayer(layerName: string, config: LayerConfig): Promise<void>;
  
  // Unload unused layers
  async unloadLayer(layerName: string): Promise<void>;
  
  // Hot-swap layer updates
  async updateLayer(layerName: string, newVersion: string): Promise<void>;
}

Layer Health Monitoring

Monitor layer performance and health status:

interface LayerHealthMonitor {
  healthChecks: {
    responseTime: number;
    errorRate: number;
    resourceUsage: number;
    availability: number;
  };
  
  performHealthCheck(layerName: string): Promise<HealthReport>;
  alertOnFailure(layerName: string, issue: HealthIssue): void;
  autoRestart(layerName: string): Promise<boolean>;
}

The modular design of the MCP Layer Architecture allows Mei to flexibly expand functionality while providing precise service combinations for different user needs. Like tailoring a custom suit, each user can choose the most suitable feature configuration for themselves.