During March 2026, Sandeep Kopparapu focused on enhancing the reliability and scalability of large-payload workflows in the xlang-ai/OSWorld repository. He addressed a critical backend issue by implementing robust error handling for oversized requests, specifically targeting HTTP 413 and related size-limit errors. Using Python and JSON, Sandeep developed logic to automatically reduce image counts and retry failed API requests, extending this detection and mitigation across both primary and backup API paths. His work improved throughput and reduced evaluation failures for large submissions, demonstrating depth in API integration and error handling while providing clear documentation and examples for future maintainability.