Contributed to the langchain4j/langchain4j repository by delivering comprehensive documentation for the ModelRouter component, focusing on its routing strategies such as FailoverStrategy and LowestTokenUsageRoutingStrategy. The work clarified configuration and usage details, directly addressing community needs and aligning with project documentation standards. Using Java and JSON, the update enhanced developer onboarding by providing clear, actionable guidance without introducing API changes. The documentation-only enhancement improved time-to-value for users making routing decisions and strengthened quality controls by adhering to cross-repository guidelines. This contribution demonstrated attention to detail in API design and technical writing, supporting maintainability and adoption within the project.