What do you mean? https://opensource.org/license/mit
Seems pretty obvious to me.
Even if you rewrite an article in your own words, you cannot claim copyright for that. At least, not to my knowledge.
I do wonder what the analysis would be of these prompts were vibe-coded, though, since in general LLM output can’t be copyrighted without significant human authorship, and Anthropic is pretty noisy about minimal human supervision.
> “I don’t prompt Claude anymore. I have loops running that prompt Claude and figuring out what to do. My job is to write loops.”
> “Can confirm Claude Code is 100% written by Claude Code”
Both from head of Claude Code. Taken either literally or seriously they point to Anthropic shipping code with limited human authorship.