AI Shell is a public preview tool developed by the Microsoft PowerShell team that enhances the interactivity of the command-line interface through the integration of AI capabilities. It allows users to interact with AI agents in a conversational manner, providing a framework for users to build custom systems tailored to specific needs. AI Shell includes a command-line interface, a framework for creating AI agents and other auxiliary providers, and tightly integrated PowerShell modules. The primary advantages of AI Shell include enhanced intelligence and adaptability in command-line operations, deep integration with PowerShell sessions, and a scalable model.