Worked on enhancing documentation for the langchain-ai/docs repository, specifically improving the self-hosted LangSmith setup guide. Addressed a documentation gap by adding the PostgreSQL ltree extension to the list of required extensions for external Postgres configurations, ensuring users have complete and accurate setup instructions. Utilized Markdown for clear technical writing and demonstrated familiarity with PostgreSQL extension requirements. Maintained documentation standards and provided traceability by linking changes to a specific commit, supporting better change management. The update aimed to streamline onboarding for self-hosted deployments and reduce configuration errors, reflecting a disciplined approach to documentation and attention to detail in technical communication.