AI Elements
Vercel AI Elements — shadcn-based React components for AI-native apps: conversations, reasoning, tool calls and streaming UI.
Agentic AI design systems
Design systems built for people and AI agents: MCP-ready contracts, agent UI kits, and component libraries that coding agents can read, validate and compose from. 6 systems in this category.
assistant-ui
React primitives for AI chat — threads, messages, composers and MCP-aware agent surfaces that coding agents can compose from.
Astryx Design System
Meta Astryx — open-source, agent-ready design system with 170+ React 19 components, CLI docs, MCP tooling and StyleX theming.
Atlas
Atlas — framework-agnostic design language for dense agent UI: dashboards, chat surfaces, multi-agent tools and AMOLED-black products.
Marmo UI
Marmo UI — MCP-native React design system so Claude Code, Cursor, Codex and Gemini compose production UI from live component APIs.
Primitiv
Primitiv — design-system contract layer for agents: compiles Figma, Storybook and code into a machine-readable MCP context.