Interface ObservabilityListenersProvider

All Known Implementing Classes:
CaptureListenersProvider
public interface ObservabilityListenersProvider
Provides listeners that are added to every AI Service and to every model call, in addition to the listeners configured by the user. Implementations are found with ServiceLoader, once, in the class loader of LangChain4j. Only implementations in dev.langchain4j packages are used; others are logged and skipped.

This is meant for LangChain4j's own modules (for example langchain4j-test), which need to observe every AI Service and model without being configured on each one. It is internal and may change at any time. Listeners provided this way receive the full content of every call (prompts, responses, tool arguments and results).

Model listeners are notified by the default implementations of the model interfaces (for example ChatModel.chat(ChatRequest)), so models that notify their listeners themselves do not notify them.