Changelog

v0.5.0

Initial public release

Components

• 46+ components covering actions, forms, overlays, navigation, layout, data display, and feedback
• Built on Base UI primitives — accessible, unstyled foundations with Prototyper UI's design layer on top
• Compound component pattern with flat named exports
• data-slot attributes on every element for targeted CSS customization

Design System

• OKLCH color tokens — perceptually uniform colors with automatic derived states via color-mix()
• Role-based surfaces — surface, surface-secondary, surface-tertiary, field-background, overlay
• Semantic shadows — three tiers (surface, field, overlay) that adapt to dark mode
• Dark mode — full token overrides via .dark class, with zeroed shadows and inset glow effects
• CSS utilities — focus-ring, focus-field-ring, invalid-field-ring, status-disabled, status-pending
• Fluid easing — signature --ease-out-fluid curve, CSS-first animations (no framer-motion)

CLI (@prototyperco/cli)

• init — Set up tokens, utilities, and project config
• add — Install components with interactive picker and dependency resolution
• update — Check and apply component updates from the registry
• doctor — Verify project health and configuration
• machine-mode init — Scaffold URL-driven machine mode endpoints
• JSON mode (--json) for LLM-driven setup workflows
• Compose scaffolding (--compose, add compose)

MCP Server (@prototyperco/mcp)

• 10 tools for AI assistants: list_components, get_component_docs, get_component_source, get_theme, search_docs, and more
• Works with Claude Code, Cursor, and other MCP-compatible tools
• Caching with TTL for fast repeated queries

Compose (@prototyperco/compose)

• JSON-patch streaming renderer for AI-generated interfaces
• Anthropic and OpenAI provider support
• Catalog system for component props, events, and slots
• Real-time state management with optimistic updates

LLM Endpoints

• /llms.txt — Project overview for LLMs
• /llms-full.txt — Complete documentation in plain text
• /llms-components.txt — All component docs concatenated
• /llms/[component] — Individual component documentation
• /prototyper-tokens.css — Extractable design tokens

Registry

• shadcn-compatible registry at prototyper-ui.com/r/{component}.json
• Works with both bunx @prototyperco/cli add and npx shadcn@latest add
• Automatic dependency resolution for inter-component dependencies