APIMatic's CLI automates tasks such as API validation, documentation, SDK maintenance, and portal generation for distributed software systems, ensuring developer experience is always in check. The CLI offers automation features like API Validator, Transformer, SDK Generator, and Portal Generator to minimize redundancy and productivity drain. By installing the CLI with Node.js and npm, developers can quickly generate APIs, SDKs, portals, and transform their APIs into various formats such as OpenAPI, RAML, and more. This streamlines the process of creating software tiers, minimizing time to market, and reducing debugging time, ultimately enhancing developer experience.