MCPify

# MCPify Refactoring Ideas This document outlines potential refactoring opportunities to improve the MCPify codebase, based on lessons learned during development and debugging. ## Recently Implemented Improvements - [x] **Parameter Handling Fix**: Eliminated double bucketing of arguments by passing raw arguments directly from `parameter-mapper.ts` to `request-builder.ts` - [x] **Logging Enhancement**: Added file rotation logging to persistently track API requests and response issues - [x] **Package Metadata**: Added proper license and repository information for npm publishing ## Schema Processing Consolidation The codebase currently handles schema processing in multiple places. Consider creating a unified schema module to: - [ ] Centralize JSON Schema / Zod schema conversions - [ ] Standardize schema processing patterns - [ ] Create consistent interfaces for schema extraction and manipulation - [ ] Eliminate duplicate schema validation code ## Class Structure Refinement The refactoring from `ExtendedOperation` to `OperationClient` has greatly improved the separation of concerns. However, there are still opportunities for further refinement: - [x] Breaking it into smaller, focused classes with single responsibilities - [x] Using composition over inheritance for improved maintainability - [ ] Further separating responsibilities in `OperationClient`: - [x] Extract the response handling logic into a dedicated class - [x] Consider separating resource reading from operation invocation - [ ] Move request building concerns to a specialized builder class ## Request Building Improvements Current request building process could be improved by: - [ ] Creating a cleaner pipeline for request construction - [ ] Separating path template expansion from URL construction - [ ] Introducing a clearer separation between parameter processing and request initialization - [ ] Better error handling for missing required parameters ## MCP Integration Layer The MCP integration could benefit from: - [ ] Creating a more formal abstraction layer between OpenAPI and MCP concepts - [ ] Improving the resource registration process with better type safety - [ ] Standardizing error handling and response processing - [ ] Adding better support for dynamic schema updates ## Test Structure Enhancement Test organization could be improved by: - [ ] Consolidating test helpers and fixtures - [ ] Creating more focused unit tests for each component - [ ] Adding integration tests for end-to-end API workflows - [ ] Improving test coverage for error conditions and edge cases ## Logging Strategy While logging has been improved, further enhancements could include: - [ ] Creating a consistent logging strategy across all components - [ ] Adding structured logging with proper correlation IDs - [ ] Implementing different log levels for development vs. production - [ ] Adding performance metrics logging Create a dedicated abstraction layer between OpenAPI and MCP: - [ ] Separate OpenAPI parsing from MCP tool/resource generation - [ ] Create clear interfaces between these responsibilities - [ ] This would make it easier to adapt to future changes in either API ## Logging Strategy Refinement Current logging seems spread across multiple components: - [ ] Consider implementing a more structured logging strategy - [ ] Centralize log configuration and log level management - [ ] Make logging more consistent across components ## Testing Infrastructure Improvements While tests appear comprehensive, there could be opportunities to: - [ ] Create more shared test fixtures and utilities - [ ] Implement more integration tests for end-to-end workflows - [ ] Add property-based testing for schema transformations ## Error Handling Strategy Implement a more consistent error handling approach: - [ ] Define standard error types for different failure scenarios - [ ] Create a central error handling mechanism - [ ] Improve error reporting for better diagnostics ## Configuration Management Move toward a more unified configuration management approach: - [ ] Centralize configuration options - [ ] Create a typed configuration schema - [ ] Add validation for configuration values ## OpenAPI Operations Factory Consider creating a factory pattern for OpenAPI operations: - [ ] Abstract the creation of different operation types - [ ] Make it easier to add support for new operation patterns - [ ] Improve testability by allowing operation mocking ## Documentation Generation Add automatic documentation generation: - [ ] Create a documentation generator that explains the transformation process - [ ] Document compatibility with different OpenAPI versions - [ ] Generate examples for common API patterns ## Path Templates Standardization The path template handling could be standardized: - [ ] Unify the approach to URI template handling - [ ] Create a more robust template parsing system - [ ] Add more validation for template parameters