Summary
This is specifically built for the Amethyst KMP project but the patterns are solid for any Kotlin Multiplatform codebase. It walks through the abstraction decision tree (should this be commonMain, jvmAndroid, or expect/actual?) with real examples from crypto, JSON parsing, and navigation. The jvmAndroid pattern is interesting: it's a custom source set that shares JVM libraries like Jackson between Android and Desktop, which saves duplication but won't work for iOS or web. Most useful when you're staring at code wondering if it belongs in the common module or needs platform splits. The decision tree alone is worth keeping around.
Install to Claude Code
npx -y skills add vitorpamplona/amethyst --skill kotlin-multiplatform --agent claude-codeInstalls into .claude/skills of the current project.
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
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Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →First SeenMay 16, 2026
