Angular schematics is a powerful tool for auto-generating code and automating repetitive developer tasks in Angular applications. The lack of official documentation is the main challenge, but the author has compiled their findings to help others. The goal of this article is to simplify the concept of using schematics to add auto-generated code to TypeScript, HTML, and JSON files. By leveraging the TypeScript compiler API, the author demonstrates how to create a rule that modifies an existing TypeScript file by generating a new object in an array. The process involves creating a context, defining changes, and applying them to the tree. The author provides code examples and guidance on how to use schematics to automate tasks such as auto-generating code for Angular applications.