What defines "OnBeforeRequest" in REST callbacks?

"OnBeforeRequest" in REST callbacks refers to actions that are automatically invoked prior to sending a request to an external REST service. This mechanism is important because it allows developers to implement logic such as authentication, logging, or modifying request headers before the actual data is sent. This ensures that any necessary context or adjustments can be applied, enhancing the security and reliability of the request.

This concept emphasizes the proactive handling of requests, making it an essential part of managing interactions with external services effectively. It allows for a clean separation of concerns, where request preparation can be handled independently from the core functional logic of the application. In contrast, actions triggered after a response is received, error-specific actions, or user-initiated triggers do not align with the intent or purpose of the "OnBeforeRequest" event, which is strictly about pre-request processing.