The Harness CLI, an open-source tool licensed under MIT, provides a command-line interface for managing CI/CD workflows, serving as an alternative to the Web UI. The text discusses the release of this tool, its purpose, and encourages contributions from the community to enhance its development and engagement. It highlights the author's personal experience with contributing to the project, emphasizing the importance of starting small, understanding the project's ecosystem, and aligning contributions with existing code conventions. The text also touches on the role of AI coding assistants in facilitating contributions, while cautioning against the submission of untested code. Overall, contributing to open source, as exemplified by the Harness CLI, offers a valuable opportunity for skill development and community interaction.