Worked on the 1Panel-dev/MaxKB repository to enhance the robustness of backend tool input handling. Addressed a critical bug by updating the ToolSerializer to validate non-required tool parameters against empty strings, ensuring that empty-string inputs no longer bypass validation. This change reduces the risk of runtime errors and improves data integrity for automated tool usage. The solution was implemented using Python and focused on backend development and API design principles. By laying the groundwork for broader input validation across MaxKB tools, the work contributed to more reliable data processing and set a foundation for future improvements in input handling.