YASA (Yet Another Static Analyzer) is an open-source project that utilizes a unified intermediate representation called the Unified Abstract Syntax Tree (UAST) to perform static analysis across multiple programming languages. It offers customizable checkers for various analysis tasks and includes built-in taint analysis for security vulnerability detection, while also providing compatibility with CodeQL syntax for ease of use. The project aims to enhance the efficiency and precision of program analysis through a unified framework and AI capabilities.