KooFE Frontend Team

Oct 26, 2026 · Artificial Intelligence

Inside Vercel v0's System Prompt: How 'Don't' Rules Guarantee Consistent Frontend Generation

This article dissects Vercel's v0 frontend generation agent's leaked system prompt, revealing how strict prohibitions — locking Next.js/shadcn/ui, banning SVG icons and config files, and front-loading user decisions via interactive components — enforce consistency and reliability in a vertical AI coding tool.