TUUI is a desktop application that acts as a Model Context Protocol client for integrating AI tools and orchestrating LLMs across multiple vendors (Anthropic/Claude, OpenAI, DeepSeek, Qwen). The app provides a local AI playground where users can interact with various LLM providers, manage MCP tools, and test AI workflows. Built with Vue3 and Vuetify, it emphasizes zero-account operation with full user control over data and API usage.