@phdthesis{digilib75406, month = {March}, title = {RANCANG BANGUN EKSTENSI VISUAL STUDIO CODE UNTUK OTOMATISASI DOKUMENTASI, PENGUJIAN, DAN ANALISIS KEAMANAN PADA APPLICATION PROGRAMMING INTERFACE (API)}, school = {UIN SUNAN KALIJAGA YOGYAKARTA}, author = {NIM.: 22106050078 Muhammad Afrizal}, year = {2026}, note = {Muhammad Didik Rohmad Wahyudi, S.T., MT.}, keywords = {VS Code, IDE, Ekstensi, Next.js, API, Generative AI, ISO/IEC 25010.}, url = {https://digilib.uin-suka.ac.id/id/eprint/75406/}, abstract = {Tool fragmentation and the high intensity of context switching frequently reduce developer productivity during the API development lifecycle, particularly within the Next.js framework. This research aims to design and develop a Visual Studio Code extension named "NextJS API Inspector" to automate documentation, testing simulation, and early security analysis (Shift-Left Testing) utilizing the Google Gemini artificial intelligence assistant. The study applied the Design and Development (D\&D) methodology, with feasibility testing based on the ISO/IEC 25010:2023 quality model, SonarQube static analysis, and a System Usability Scale (SUS) evaluation involving 30 respondents. The testing results demonstrated that the extension successfully met 9 main characteristics of ISO 25010 with a 100\% functional and compatibility success rate, a 100/100 performance efficiency score, and achieved a Rating A (0 bugs, 0 vulnerabilities) in reliability, security, and maintainability aspects. The user acceptance evaluation yielded an SUS score of 78.75, falling into the Good/Acceptable category. In conclusion, this extension is proven to be functional, secure, and significantly enhances developer workflow efficiency by reducing the cognitive load caused by application switching.} }