Worked on the openfga/python-sdk repository to deliver a core feature enabling start_time filtering for the read_changes API endpoint. This involved updating API definitions, enhancing both synchronous and asynchronous Python SDK clients, and providing comprehensive documentation in Markdown. The technical approach ensured that the new parameter allowed users to efficiently filter change histories by date and time, improving data query performance and auditability for downstream integrations. All changes were aligned with repository standards and prepared for production release. The work demonstrated proficiency in API development, backend development, and SDK development, with a focus on maintainability and streamlined integration workflows.