Worked on enhancing documentation for the Anthropic Model Builder within the langchain4j/langchain4j repository, focusing on improving clarity and usability for Java developers. Delivered comprehensive Javadoc and usage documentation for key components such as AnthropicTokenCountEstimator, AnthropicModelCatalog, AnthropicChatModel, and AnthropicStreamingChatModel. The updates detailed new builder configurations, including options for HTTP client setup, API key management, model parameterization, and caching strategies. By aligning with existing module standards, this work aimed to streamline developer onboarding and reduce ambiguity in API usage. The effort centered on API development and documentation, leveraging Java and best practices in technical writing.