Nandhu worked on dynamic directory management and protocol enhancements across the modelcontextprotocol/servers and apple/containerization repositories. He implemented the Dynamic MCP Roots Protocol, enabling runtime overrides of allowed directories while maintaining backward compatibility, and refactored roots processing into a dedicated module to improve testability and error handling. Using TypeScript and Node.js, he added comprehensive directory validation tests and updated documentation for clearer onboarding. In apple/containerization, he fixed environment variable handling in vminitd to preserve custom HOME values, adding regression tests for stability. He also standardized terminology and schema references, aligning documentation to reduce ambiguity and support maintainable integration workflows.