MCP Ethers Wallet

# ERC20 MCP Server Implementation Plan ## Overview This document outlines a comprehensive implementation plan for a dedicated MCP (Model Context Protocol) server specifically focused on deploying, interacting with, and managing ERC20 tokens. Building on the architecture and best practices of the existing Ethers MCP server, this specialized service will provide a streamlined interface for LLMs and other clients to work with ERC20 tokens on Ethereum and compatible networks. ## Core Objectives 1. **ERC20 Token Deployment**: Provide tools for deploying new ERC20 tokens with customizable parameters. 2. **Token Management**: Implement comprehensive tools for managing token operations. 3. **Token Analysis**: Support for analyzing token contracts, supply, holders, and transaction history. 4. **Token Registry**: Maintain a registry of deployed and verified tokens. 5. **Security Focus**: Ensure best practices for secure token operations. ## System Architecture ### High-Level Components ``` ERC20-MCP-Server ├── Server Layer (MCP Protocol Implementation) ├── Tool Layer (Token-specific MCP tools) ├── Service Layer (Token business logic) ├── Provider Layer (Blockchain connectivity) └── Utility Layer (Helpers, caching, logging) ``` ### Detailed Architecture 1. **MCP Server Core** - Protocol handling - Capability negotiation - Connection management - Message serialization 2. **Tool Categories** - Deployment tools - Token information tools - Token transaction tools - Token registry tools - Token analysis tools 3. **Service Layer Components** - Token contract service - Token deployment service - Token transaction service - Token registry service - Token analysis service 4. **Provider Management** - Network configuration - Connection management - Chain ID resolution - RPC management 5. **Utility Components** - Caching for token information - Logging and metrics - Rate limiting for APIs - Error handling - Data serialization ## Implementation Phases ### Phase 1: Core Infrastructure Setup 1. **Project Setup** - Initialize project structure following existing Ethers MCP server patterns - Configure TypeScript, ESLint, Prettier, etc. - Set up build pipeline 2. **MCP Server Implementation** - Implement base server using MCP SDK - Define basic capability set - Configure server transports (stdio, HTTP) 3. **Core Service Layer** - Implement EthersService with network support - Implement provider management - Set up caching infrastructure 4. **Testing Framework** - Establish testing patterns - Implement mocking utilities - Create test runners for different test types ### Phase 2: Token Information and Read Operations 1. **Token Information Tools** - Implement `getTokenInfo` (name, symbol, decimals, etc.) - Implement `getTokenBalance` for retrieving balances - Implement `getTotalSupply` for token supply info - Implement `getAllowance` for checking approvals 2. **Token Analysis Tools** - Implement `analyzeTokenDistribution` for holder analytics - Implement `getTokenHistory` for transaction history - Implement `verifyTokenContract` for security analysis 3. **Client Testing** - Create test suites for token information retrieval - Test with mainnet tokens like USDC, DAI, etc. - Implement test reporting ### Phase 3: Token Deployment and Write Operations 1. **Token Deployment Tools** - Implement `deployStandardToken` for ERC20 deployment - Implement `deployCustomToken` with customizable parameters - Implement `verifyDeployment` for contract verification 2. **Token Transaction Tools** - Implement `transferTokens` for token transfers - Implement `approveTokens` for approval management - Implement `transferFromTokens` for delegated transfers - Implement `mintTokens` and `burnTokens` for supply management 3. **Token Registry Service** - Implement storage for deployed token records - Add metadata and tagging support - Implement search and filtering 4. **Transaction Simulation** - Add mock mode for token operations - Implement gas estimation tools - Support for transaction preview ### Phase 4: Advanced Features and Integration 1. **Advanced Token Features** - Support for token upgradeability patterns - Multi-call for batch operations - Support for token snapshots - Voting and delegation features 2. **Integration Features** - Integrate with token price providers - Add support for token swaps - Implement multi-chain support - Add liquidity management tools 3. **Developer Tooling** - Create interactive documentation - Implement OpenAPI spec generation - Add client SDKs in multiple languages - Create usage examples ## Folder Structure ``` / ├── src/ │ ├── config/ # Configuration files │ │ ├── networks.ts # Network definitions │ │ ├── tokenRegistry.ts # Token registry config │ │ └── constants.ts # System constants │ │ │ ├── mcpServer.ts # Main MCP server entry point │ │ │ ├── services/ # Core services │ │ ├── ethersService.ts # Ethereum service │ │ ├── tokenRegistry.ts # Token registry service │ │ └── erc20/ # ERC20 specific services │ │ ├── deployService.ts # Deployment logic │ │ ├── transferService.ts # Transfer logic │ │ ├── analysisService.ts # Analysis logic │ │ └── registryService.ts # Registry logic │ │ │ ├── tools/ # MCP Tools │ │ ├── index.ts # Tool registration │ │ ├── token/ # Token-specific tools │ │ │ ├── infoTools.ts # Information tools │ │ │ ├── deployTools.ts # Deployment tools │ │ │ ├── transferTools.ts# Transfer tools │ │ │ └── analysisTools.ts# Analysis tools │ │ │ │ │ └── utility/ # Utility tools │ │ ├── gasTools.ts # Gas estimation │ │ └── networkTools.ts # Network utilities │ │ │ ├── utils/ # Utilities │ │ ├── cache.ts # Caching utilities │ │ ├── logger.ts # Logging │ │ ├── metrics.ts # Metrics collection │ │ ├── rateLimiter.ts # Rate limiting │ │ └── validation.ts # Input validation │ │ │ └── tests/ # Test suite │ ├── unit/ # Unit tests │ ├── integration/ # Integration tests │ ├── mcp-client/ # MCP client tests │ │ ├── runClientTests.ts │ │ └── suites/ # Test suites │ │ ├── tokenDeployTests.ts │ │ ├── tokenInfoTests.ts │ │ └── tokenTransferTests.ts │ └── utils/ # Test utilities │ ├── contracts/ # Smart contracts │ ├── ERC20Standard.sol # Standard ERC20 │ ├── ERC20Custom.sol # Customizable ERC20 │ └── Registry.sol # On-chain registry (optional) │ └── scripts/ # Utility scripts ├── deploy.ts # Deployment scripts └── verification.ts # Contract verification scripts ``` ## Toolset Definition ### Token Information Tools 1. **`getTokenInfo`** - Retrieve basic token information (name, symbol, decimals) - Support for optional provider/network parameter - Caching support 2. **`getTokenBalance`** - Get token balance for a specific address - Support for bulk balance checking 3. **`getTotalSupply`** - Get current total supply of tokens - Historical supply tracking (optional) 4. **`getAllowance`** - Check token approval amounts between addresses ### Token Deployment Tools 1. **`deployStandardToken`** - Deploy a standard ERC20 token - Parameters for name, symbol, initial supply - Option for mintable/burnable features 2. **`deployCustomToken`** - Deploy a customized ERC20 with advanced features - Support for access control roles - Support for supply caps, pausing, etc. 3. **`verifyContract`** - Verify deployed token on Etherscan/block explorers - Generate verification artifacts ### Token Transaction Tools 1. **`transferTokens`** - Transfer tokens between addresses - Batch transfer support 2. **`approveTokens`** - Set token approvals - Increase/decrease allowance options 3. **`sendTokensWithData`** - Transfer tokens with attached data - Support for proxy contract calls 4. **`mintTokens`** - Mint new tokens (if supported by contract) - Batch minting support 5. **`burnTokens`** - Burn tokens (if supported by contract) - Batch burning support ### Token Analysis Tools 1. **`analyzeTokenDistribution`** - Analyze token holder distribution - Calculate concentration metrics 2. **`getTransactionHistory`** - Get token transaction history - Filter by transaction types 3. **`simulateTokenTransfer`** - Simulate token transfers without sending - Gas estimation and error checking 4. **`auditTokenContract`** - Basic security audit of token contract - Check for common vulnerabilities ### Token Registry Tools 1. **`registerToken`** - Add token to registry with metadata - Support for verification status 2. **`searchTokens`** - Search registry with filtering options - Sort by various metrics 3. **`getTokenMetadata`** - Retrieve extended token metadata - Links to documentation, websites, social media ## Testing Strategy ### Test Types 1. **Unit Tests** - Testing individual functions in isolation - Mock Ethereum provider interactions - Focus on business logic correctness 2. **Integration Tests** - Testing service interactions - Partial mocking of external dependencies - Focus on component interactions 3. **MCP Client Tests** - Testing from client perspective - Full tool call lifecycle testing - Mock mode for blockchain operations 4. **Contract Tests** - Testing smart contract interactions - Use local hardhat node for testing - Cover deployment, calls, and events 5. **End-to-End Tests** - Real network tests (testnets) - Complete flow testing - Performance and reliability checks ### Testing Best Practices 1. **Test Independence** - Tests should be independent and isolated - Use fresh contract deployments for each test - Avoid reliance on external state 2. **Comprehensive Coverage** - Aim for high test coverage (>90%) - Test error paths and edge cases - Include performance tests 3. **Blockchain Testing** - Use local Hardhat node for most tests - Maintain snapshot system for fast tests - Have specific testnet tests for integration 4. **Mocking Strategy** - Mock at provider level when possible - Use hardhat for contract interaction testing - Avoid excessive mocking of business logic 5. **Test Organization** - Organize tests mirroring source structure - Group related tests in suites - Separate slow and fast tests ## Continuous Integration Pipeline 1. **Build & Lint** - TypeScript compilation - ESLint checks - Type checking 2. **Unit & Integration Tests** - Run all tests in CI - Separate job for slow tests 3. **Contract Deployment Tests** - Deploy test contracts to Hardhat - Verify correct deployment 4. **Client Integration Tests** - Run MCP client tests - Test with hardhat node 5. **Coverage Reporting** - Generate coverage reports - Enforce minimum coverage thresholds ## Deployment Strategy 1. **Local Development** - Use Hardhat node for development - Hot reloading for fast iteration 2. **Testing Environment** - Deploy to test networks (Sepolia, Goerli) - Automated deployment from CI 3. **Production Deployment** - Container-based deployment - Configuration via environment variables - Health checks and monitoring ## Security Considerations 1. **Private Key Management** - Secure storage of deployment keys - Support for hardware wallets - No private key exposure 2. **Input Validation** - Rigorous parameter validation - Prevent injection attacks - Contract address validation 3. **Rate Limiting** - Protect against abuse - Fair usage policies 4. **Contract Security** - Standard audited contracts - Support for upgradable patterns - Best practices for admin controls 5. **Error Handling** - Secure error messages - No sensitive information in responses - Proper exception handling ## Documentation Plan 1. **API Documentation** - MCP tool specifications - Parameter descriptions - Example responses 2. **Token Development Guide** - Best practices for ERC20 development - Security considerations - Deployment walkthrough 3. **Integration Examples** - Client examples in multiple languages - Common use case examples - Troubleshooting guide 4. **Architecture Documentation** - System design overview - Component interactions - Extension points ## Timeline and Milestones ### Milestone 1: Core Infrastructure (2 weeks) - Project setup and basic architecture - MCP server implementation - Core service layer - Basic test framework ### Milestone 2: Token Information (2 weeks) - Token information tools - Token analysis tools - Client testing - Documentation ### Milestone 3: Token Deployment (3 weeks) - Token deployment tools - Smart contract implementation - Token registry service - Deployment testing ### Milestone 4: Token Operations (3 weeks) - Transfer and approval tools - Minting and burning tools - Transaction simulation - Integration testing ### Milestone 5: Advanced Features (3 weeks) - Advanced token features - Integration with external services - Performance optimization - Documentation finalization ## Conclusion This implementation plan outlines a comprehensive approach to building a dedicated ERC20 MCP server based on the existing architecture and best practices. By focusing specifically on token functionality, this service will provide a streamlined and powerful interface for deploying and managing ERC20 tokens through the Model Context Protocol. The development follows a phased approach, starting with core infrastructure and progressively adding more advanced features while maintaining strict testing and security standards. The resulting system will provide a robust and extensible platform for token operations.