Worked on the nf-core/tools repository to address a user experience issue in the command-line interface by correcting a deprecation message for the nf-core list command. The update clarified that users should now run 'nf-core pipelines list', aligning the guidance with current workflows and reducing potential confusion. This change was implemented through a focused, traceable commit, demonstrating careful code refactoring and attention to detail in CLI development. Using Python, the developer ensured that the messaging accurately reflected the intended usage, thereby improving consistency and maintainability for future contributors while supporting clear communication within the tool’s user base.