Context Manager MCP Server

# MCP Server Implementation Guide ## Background & Learnings During testing, we discovered several key requirements for reliable MCP implementation: 1. Socket-based transport is more reliable than stdio pipes for bidirectional communication 2. Message framing using Content-Length headers is essential 3. Buffer management and message parsing need careful handling 4. Clean connection shutdown is important for reliable testing ## Implementation Details ### 1. Transport Protocol - Use TCP sockets (net module) - Default port: 44557 - Support Content-Length header framing ### 2. Message Format ```typescript interface MCPMessage { jsonrpc: "2.0"; id: number; method?: string; // for requests params?: any; // for requests result?: any; // for responses error?: { // for error responses code: number; message: string; data?: any; }; } ``` ### 3. Core Components Needed 1. **MessageFramer Class** ```typescript class MessageFramer { // Handles message buffering and Content-Length parsing // See src/mcp-test.js for implementation details } ``` 2. **ToolRegistry** ```typescript class ToolRegistry { // Manages available tools // Handles tool registration and lookup // Provides capability reporting } ``` 3. **Session Manager** ```typescript class SessionManager { // Manages client sessions // Handles initialization state // Maintains tool contexts } ``` ### 4. Required Tool Implementations Each tool should implement: - Initialization - Method handlers - Capability reporting - State management - Error handling Key tools: - Project Management - Work Package Management - Task Management - QA Tools - Base Tool functionality ### 5. Message Flow 1. Client connects via TCP 2. Client sends initialize request 3. Server responds with capabilities 4. Normal message exchange begins 5. Clean shutdown on completion ### 6. Error Handling - Proper JSON-RPC error responses - Socket error handling - Message parsing error recovery - Tool-specific error handlers ## Reference Implementation See `src/mcp-test.js` for working example of: - Socket handling - Message framing - Buffer management - Protocol flow ## Testing Strategy 1. Unit tests for each component 2. Integration tests for tool interactions 3. Protocol conformance tests 4. Error handling tests 5. Performance testing under load ## Recommended Implementation Steps 1. Set up base server infrastructure 2. Implement message framing 3. Add tool registry 4. Implement session management 5. Add individual tools 6. Add comprehensive error handling 7. Add logging and monitoring 8. Performance optimization ## Critical Considerations 1. Thread safety for tool operations 2. State management across sessions 3. Resource cleanup 4. Error recovery 5. Protocol compliance 6. Performance under load 7. Security considerations This implementation guide is based on successful testing of the protocol and message handling mechanisms demonstrated in the test implementations.