Lustre

You'd reach for this when building Flutter UIs through Claude or other AI coding agents. It exposes 46 pre-built widgets through MCP, saving you from describing common UI patterns from scratch. Ships with three theme configurations and automatic light/dark mode support, so your agent can scaffold complete interface code without the usual back-and-forth about styling details. Think of it as a design system that AI can query and implement directly. The stdio transport keeps integration simple. Most useful when you're prototyping Flutter apps conversationally and want consistent, production-ready components instead of placeholder code.