# Documentation - User Guide - **Quick Start** - [Welcome to MuChat](/en/docs): Meet MuChat, your AI assistant for answering customer questions using your business information. - [Build Your First AI Agent](/en/docs/build-your-first-ai-agent): Create MuChat, train it on your business information, and start answering questions from your website visitors. - [Best Practices](/en/docs/best-practices): Proven ways to improve MuChat's answers: better instructions, clearer data sources, the right model, and correcting answers as you go. - **AI Agent Management** - [Playground](/en/docs/user-guides/chatbot/playground): Test MuChat before deploying it and adjust its model, instructions, and actions in one place. - [Response settings](/en/docs/user-guides/chatbot/build): Define MuChat's role and tone with instructions, choose a model and temperature, and apply the settings to your agent. - Developer Guide - **Getting Started** - [Developer Overview](/en/docs/developer-guide): Welcome to the MuChat Developer Guide! Whether you're embedding a simple chat widget or building complex integrations, this guide will help you implement AI-powered conversations in your application. - [REST API Integration](/en/docs/developer-guide/api-integration): Complete guide to integrating MuChat AI Agents using the MuChat API v2 for custom integrations and applications. - API v2 Reference - **Getting Started** - [API v2 Overview](/en/docs/api-reference): Introduction to the MuChat API v2 — a structured, modern REST API for chatting with AI agents and managing conversations.