Worked on the cloudposse/atmos repository to enhance the describe-stacks command, focusing on usability and robustness for complex deployments. Developed multi-value support for the --component-types flag by switching to StringSlice, enabling users to specify multiple component types in a single command. Addressed a potential nil-pointer panic in the Merge function to improve error handling and prevent crashes when configuration data is missing. Expanded unit testing to verify flag parsing and ensure stability across various input scenarios. Utilized Go for CLI development, emphasizing flag parsing and resilient configuration management to reduce runtime errors and support more flexible Atmos configurations.