Redocly CLI and Redoc are open-source command-line tools designed to help tech writers manage and publish API documentation efficiently. Redocly CLI allows for handling complex API definition files through commands like lint, split, and bundle, enabling users to validate, maintain, and compile API files in a structured format. These tools, which operate using a node.js terminal, are highly configurable and support custom linting rules to ensure API definitions adhere to specific standards. Familiarity with GitHub is recommended for optimal use, as it facilitates version control and collaborative documentation processes. The openapi-starter project on GitHub offers a starting point for users, providing a sample API definition file and a recommended folder structure for API management. Redocly CLI uses a configuration file, redocly.yaml, to control its behavior and manage multiple API files effectively, acting as a substitute for traditional UI settings.