Contributed to the zulip/zulip repository by delivering comprehensive API documentation for allowed email domain restrictions, focusing on endpoints that help organization owners manage domain access. The work involved updating Markdown-based documentation and refining OpenAPI specifications to clarify endpoint usage, domain restriction details, and register response behaviors. By linking documentation updates in the API changelog and coordinating with backend teams, the developer improved clarity and reduced integration friction for tenant administrators. The emphasis remained on enhancing developer experience and supporting security governance, with no major bug fixes recorded during the period. The technical approach centered on Python, API documentation, and backend development.