Spec-driven AI development replaces ad hoc prompting with structured specifications to produce more predictable, reviewable, and maintainable AI-assisted features. OpenSpec is a lightweight framework that organizes work into a directory model with specs, changes, and archive folders. Within Syncfusion Code Studio, developers use four core OPSX actions: explore (think through ideas without touching files), propose (generate proposal.md, design.md, tasks.md, and temporary specs), apply (let AI implement tasks step by step), and archive (merge completed specs into the main system). The guide covers CLI setup via npm, initialization with openspec init, an optional expanded workflow for larger features, and best practices like keeping changes small and reviewing specs before applying them.