Kotlin Multiplatform

The Kotlin Multiplatform skill enables AI agents to write and execute code that shares business logic across multiple platforms, including Android, iOS, Web, and Desktop. It allows a single codebase to target different operating systems while maintaining native performance through Kotlin/Native compilation.

When to use it

• You need to share business logic between mobile (iOS/Android) and web applications without duplicating code.
• Your project requires high-performance native execution on specific devices rather than relying solely on JavaScript bridges.
• You want to leverage a single language ecosystem for cross-platform development while targeting diverse hardware architectures.
• You are building backend services or shared libraries that must run efficiently on various client-side environments.

Key capabilities

• Shares business logic across Android, iOS, Web, and Desktop platforms using a single codebase.
• Compiles to native machine code via Kotlin/Native for optimal performance on each target platform.
• Supports interoperability with existing Java, Swift, Objective-C, and C++ codebases.
• Enables development of shared libraries that can be consumed by different build systems simultaneously.

Example prompts

• "Create a Kotlin Multiplatform module to handle user authentication logic that works on both iOS and Android."
• "Write a shared data model in Kotlin that serializes JSON responses for a web frontend and native mobile apps."
• "Generate a cross-platform utility function to format dates consistently across all supported platforms."

Tips & gotchas

Ensure your AI agent understands the distinction between common code (shared logic) and platform-specific implementations when generating multiplatform projects. Be aware that while business logic is shared, UI code typically remains separate for each target platform to leverage native capabilities.