During March 2026, Joe Nguyen enhanced the Task Evaluator for Chrome and Thunderbird within the xlang-ai/OSWorld repository, focusing on automating feasibility marking and improving billing workflow reliability. He implemented SQL-based validation to ensure every message in the Bills folder was starred, while also relaxing evaluator requirements to better align with evolving compliance needs. By updating evaluator logic and integrating robust data validation, Joe reduced manual intervention in task processing and increased billing accuracy. His work leveraged full stack development skills and proficiency in SQL and JSON, resulting in deeper cross-platform support and more reliable task evaluation across major inbox clients.