Free: 2 design packs a day without account, 5 per day with free account. Pro: $9 per month (or $90 per year) for 50 packs per month, any page of a site, private packs, MCP server and REST API.
Key features
React components with customizable size, color, and stroke width
Pencil variant with adjustable grain texture from 0 to 1
Small bundle sizes: 0.5 KB gzipped per icon, 67 KB for all by name
Consistent rendering across server and client with no hydration mismatch
DESIGN.md in Google's format describing colors, type, spacing, radii, shadows and components
BEHAVIOR.md covering hover, focus, tooltips, menus, motion, scrolling, tables, forms and dark mode
Screenshots at four widths: 1440, 1024, 768 and 390 pixels
W3C design tokens (DTCG) format for Style Dictionary and Figma plugins
CSS custom properties with all design values
Tailwind v4 theme block
SKILL.md for Claude Code and Cursor
MCP server integration for AI agents to fetch packs automatically
REST API with keys for automated access
Private packs accessible only to the user
What makes it different
Same name always draws identically everywhere for consistency
Authentic pencil-style imperfections while maintaining legibility at small sizes
MIT licensed and free for personal and commercial use
Measured from live pages, not guessed from screenshots
Captures behavioral details like interactions and state changes, not just visual design
Free tier requires no account or card to try
AI agents can use Stylepack directly with Pro via MCP server
Matita
Stylepack