Ultrathink displays colorful ANSI art of the word "ultrathink" when invoked by a user command or slash command, executing a Bash script that renders the text in rainbow-colored box-drawing characters. The skill is for developers and Claude users who want a visual easter egg or decorative output. It solves the simple problem of providing a fun, stylized text display with no additional functionality or output.
npx skills add https://github.com/intellectronica/agent-skills --skill ultrathink