Thinking Tool

Render assistant reasoning in a collapsible row. State-driven (thinking shimmer / thought static). Self-contained port from 21st.dev Agent Elements with React-only collapsible (no @base-ui/react) and inline shimmer keyframes.

Built with React and Tailwind. Copy the prompt and paste it into Claude Code, Cursor or Lovable: your agent adds Thinking Tool to your project and fits it to your theme.

import { ThinkingTool } from "@/components/ui/thinking-tool";

export default function Demo() {
  return (
    <div className="flex items-center justify-center w-full min-h-screen bg-background p-8 overflow-hidden">
      <div className="w-fit">
        <ThinkingTool state="thinking" content="Draft" defaultOpen />
      </div>
    </div>
  );
}