This orchestrates parallel development across web, mobile, and desktop by starting with API contracts and design systems, then fanning out to platform-specific implementations. You get dedicated subagents for React/Next.js, SwiftUI, Kotlin/Compose, and optionally Electron/Tauri, all working from shared business logic and data models. The workflow is opinionated about the stack (TypeScript, modern frameworks, specific state management patterns) which is either perfect or limiting depending on your setup. The real value is in the coordination strategy: it forces you to nail down contracts upfront so teams can work independently without integration hell later. Best for greenfield features where you control the entire stack, less useful if you're stuck with legacy platforms or non-standard frameworks.
npx skills add https://github.com/sickn33/antigravity-awesome-skills --skill multi-platform-apps-multi-platform