CutyPAI

CutyPAI is an AI companion platform with:

• ASP.NET Core 9 backend (MVC + REST API)
• MongoDB for persistence
• JWT + Cookie authentication
• OpenAI chat integration
• AWS Polly text-to-speech
• Rhubarb lip-sync generation
• Next.js frontend (in clientApp) with a 3D avatar/chat experience

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Project Structure

• /Controllers, /Services, /Repositories, /Models – backend application logic
• /Views – ASP.NET MVC views
• /wwwroot – static assets
• /Styles – Tailwind source for backend UI styles
• /clientApp – Next.js frontend app

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Tech Stack

Backend

• .NET 9
• ASP.NET Core MVC + Web API
• MongoDB Driver
• OpenAI SDK
• AWS Polly SDK
• Serilog

Frontend

• Next.js 15
• React 19
• Tailwind CSS 4
• Three.js / React Three Fiber

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Prerequisites

• .NET SDK 9.0+
• Node.js 18+ and npm
• MongoDB
• (Optional but recommended) ffmpeg
• Rhubarb Lip Sync binary available at configured path

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