The WunderGraph Universal API ORM is a TypeScript-based ORM that provides a unified API for accessing data from various sources, including REST, SOAP, GraphQL, SQLite, MySQL, PostgreSQL, and more. It allows developers to access all their data sources through a single API, reducing the complexity of working with multiple APIs. The ORM uses the reverse API Gateway pattern, which sits behind the application, making it easier to manage cross-cutting concerns like authentication, authorization, rate limiting, caching, logging, error handling, and more. This approach provides benefits such as unified logging and error handling, distributed tracing, and reduced response payload. The WunderGraph Universal API ORM is an open-source project that aims to solve the problem of managing multiple APIs in a single application.