The provided text outlines the Google Gemini CLI, an open-source tool that integrates advanced AI language models directly into a developer’s terminal. It functions as an agentic assistant capable of performing complex tasks like coding, debugging, and web research by using built-in tools for file management and shell command execution. Users can access models such as Gemini 2.5 Pro for free, benefiting from a massive one-million-token context window and seamless integration with VS Code. The documentation emphasizes security and customization, detailing features like sandboxed execution, hierarchical context files, and an extensible plugin system. Additionally, the sources explain various authentication methods and flexible usage modes, ranging from interactive conversations to automated, headless scripting. Ultimately, the guide positions the CLI as a versatile, privacy-conscious workflow enhancement for modern software development.