During March 2026, Paul Nigh focused on security hardening and API reliability for the awslabs/mcp repository. He addressed a path traversal vulnerability by removing the file writing capability from the backend, specifically eliminating the save_to_file parameter and related logic in Python modules. This approach shifted file handling responsibilities to clients, requiring explicit user approval for file writes and reducing the attack surface. Paul ensured that template content is now returned directly in API responses, maintaining functionality while enhancing security. His work demonstrated depth in backend development, API design, and security best practices, resulting in a safer and more robust codebase.