Developed a user-focused enhancement for the dentiny/ray repository’s State API CLI by implementing case-insensitive filter keys, allowing users to input filters without worrying about letter casing. This improvement normalized filter keys against valid schema columns, streamlining user experience and reducing confusion from mismatched cases. The solution incorporated robust error handling to provide clearer feedback when invalid keys were entered. Work was delivered through a single, well-documented Python commit, supported by targeted unit tests using pytest and updated CI checks. The approach demonstrated attention to usability and maintainability, leveraging CLI development skills and a disciplined, test-driven workflow throughout the process.