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React Login Token Authentication Block

Token and JWT React authentication block for Next.js with textarea for pasting API tokens, live format validation indicator, collapsible token format reference with code example, and expand animation using shadcn/ui Button, Textarea, Label, Tailwind CSS, and framer-motion

Authenticate API users with this React and Next.js token-based login block. Features a large textarea for pasting JWT or API tokens, a live format validation indicator that detects valid JWT structure, and a collapsible reference section showing the expected token format with a code example. Built with TypeScript, shadcn/ui Button, Textarea, and Label components, framer-motion for expand animations, and Tailwind CSS. Essential for API platforms, developer tools, and machine-to-machine authentication interfaces.

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Last updated on March 18, 2026

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