PowershellGPT is a comprehensive PowerShell extension that lets developers invoke OpenAI GPT models directly from their shell. It includes cmdlets like Invoke-ChatGPT and Get-ChatCompletion to submit prompts, receive streaming outputs, and manage conversation state. Users can define system messages, set temperature and token limits, and integrate AI responses into existing scripts or pipelines. With cross-platform support, encrypted API key storage, and customizable settings, PowershellGPT streamlines code generation, refactoring, debugging, documentation, and automation tasks by embedding GPT-driven intelligence directly into script workflows.