Worked on improving user experience in the opentensor/btcli repository by addressing a bug in the wallet validation messaging within the command-line interface. Focused on Python-based CLI development, the work involved correcting a double negative in the error output to ensure that users receive a clear message when a wallet does not exist. This targeted fix enhanced the accuracy and clarity of user-facing error reporting, reducing confusion and potential support requests. The change was linked to a specific commit for traceability, reflecting a methodical approach to code maintenance and auditability while contributing to the reliability of wallet-related CLI workflows.