Claude Skills portability question surfaces

The core asset here is portable promptware, not a magical Claude-only binary, but the orchestration layer is where migration gets messy.

• –Anthropic describes Skills as directories with a `SKILL.md` file plus optional scripts and resources, which makes the content itself easy to copy or recreate elsewhere.
• –Claude's docs say only skill metadata is loaded first and full instructions activate when a task matches, so its trigger system is tied to Anthropic's context-management layer.
• –Anthropic also positions Skills as an open standard, which strengthens the case that `SKILL.md` can travel across tools even if behavior will not be identical.
• –Moving the files into ChatGPT should preserve a lot of the instruction logic, but tool permissions, memory handling, and automatic skill selection will need manual rebuilding.
• –This is the broader agent market trend: reusable instruction bundles are becoming portable, while the real moat is the runtime that decides when and how to invoke them.