Portable
One install works across every AI agent you use — Claude Code, Cursor, Codex, Antigravity.
Free · MIT · open source
A Design Skill That Gives Your AI Agent Real Taste
For Cursor, Claude Code, Codex, and Antigravity.
An AI design skill is a portable set of operating instructions and tokens you install into your agent. The free, open-source Fable Design System is one — it makes Cursor, Claude Code, Codex, and Antigravity declare a design system before building, so their UI has real taste instead of generic defaults.
Skill, not component library
Opinionated
It carries a real design point of view — restraint, editorial type, measured color — not a neutral kit.
Free & open
MIT-licensed. Read every line, fork it, ship it. No account, no paywall.