What is one requirement for using the Dynatrace OneAgent SDK?

The requirement of having access to the source code of the application is crucial for using the Dynatrace OneAgent SDK because the SDK is designed to facilitate instrumentation of your application. This means that developers need to interact with the code directly to enable Dynatrace to monitor application performance and health effectively. By accessing the source code, developers can leverage the SDK's capabilities to add monitoring functionalities, such as tracking method calls, transactions, or custom metrics directly within the application's codebase.

Other options do not encompass the essential need to modify or integrate with the application's source code. For example, while having access to the API documentation can enhance understanding and implementation, it is not a strict requirement for using the SDK itself. Similarly, a local database or a specific container setup may be relevant for certain deployment scenarios, but they are not prerequisites for employing the OneAgent SDK. The focus on the source code underscores the SDK's purpose of allowing developers to implement fine-grained monitoring that aligns with the unique structure and requirements of their applications.