Worked on enhancing developer experience and migration readiness for the kintone/js-sdk repository by delivering comprehensive documentation improvements for the @kintone/rest package. Focused on technical writing and documentation using Markdown, the work included revising the README for greater clarity, explicitly describing the package’s experimental status, and providing improved installation and usage examples. Developed a detailed migration guide to assist users transitioning from @kintone/rest-api-client to @kintone/rest, covering client creation, authentication, timeouts, and other configuration aspects. The documentation also highlighted unsupported features in the new client, ensuring developers have accurate expectations and a smoother onboarding process with the updated SDK.