This skill should be used when the user asks to 'create a plugin', 'scaffold a Claude Code plugin', 'convert .claude config to a plugin', 'build a plugin marketplace package', 'add plugin skills, agents, hooks, MCP (Model Context Protocol) servers, LSP (Language Server Protocol) servers, monitors, output styles, or settings', 'validate plugin structure', or 'prepare a Claude Code plugin for local testing, community marketplace review, or official marketplace readiness'. It owns plugin-authoring decisions and distinguishes standalone .claude configuration, shareable namespaced plugins, community marketplace submission, and curated official marketplace inclusion.