For years, AI developer assistance has been synonymous with the IDE, living as autocomplete and chat sidebars. This paradigm is rapidly shifting. A new class of "Agentic CLI" tools, including Anthropic's Claude Code and GitHub's Copilot CLI, is moving AI development out of the editor and into the terminal. This talk explores the "why" behind this migration, demonstrating how the terminal's power, composability, and capacity for parallel, asynchronous workflows make it the ideal environment for true agentic delegation—transforming the developer's role from pair-programmer to technical director. We will dive deep into the value proposition of these tools, explaining how they function less like assistants and more like autonomous teammates capable of planning, executing, and testing complex features. Central to this new power is the Model Context Protocol (MCP), the open standard enabling these agents to securely interact with file systems, APIs, and project context. Finally, we will compare the agentic capabilities and default "tools" (like file system access, shell execution, and Git integration) offered by the leading CLI agents, providing a clear map of the emerging agentic development landscape.