Who this book is for.Unity developers who want to streamline their workflows by building custom tools.Technical artists and programmers looking to master the Unity Editor API.Tool developers aiming to create professional-grade editor extensions with UI Toolkit. Designed for Unity developers of all levels, Unity 6 Editor Tools Essentials Vol. 1 is a step-by-step guide to mastering the Editor Tools API, from the fundamentals to advanced customization. You'll start by learning how to use variable attributes, property drawers, and decorator functions to streamline workflows. As you progress, you'll build custom inspectors, create editor windows, and integrate UXML, USS, and C# through Unity’s modern UI Toolkit. The book also explores GUI styling, menu integration, and the use of Scriptable Objects to manage data efficiently. With practical examples and real production use cases, this book will equip you with the skills to extend the Unity Editor and create professional-grade tools that boost productivity in any game development project.Table of Contents.1. The Wide World of Editor Scripting.Basic Prerequisites.Why Build Custom Tools.UI Toolkit and IMGUI. 2. Adding Property Drawers and Decorators.Introducing Attributes and Drawers.Customizing the Level Generator.Using Decorator Drawers. 3. Creating Attributes and Drawers from Scratch.Writing Custom Decorators.Adding a Decorator Drawer.Elements and Styles. 4. Class GUIs and Custom Inspectors.Customizing Serialisable Classes.Building Custom Inspectors.Managing Unity Placement. 5. Crafting Editor WindowsBuilding an EditorWindow.Adding and validating menu items.Using the AssetPreview class. 6. Integrating UXML, USS, and C#UI Toolkit development strategies.Creating and cloning UXML documents.Reusing styles across multiple elements.Adding editor behaviors in C# scripts. 7. Managing Data with ScriptableObject assets.Creating ScriptableObject data classes.Structuring EditorWindow UXML.Creating assets with the AssetDatabase class.