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stx templates, Crosswind, composables, desktop and mobile.

stx is the only templating system in Stacks, and these cover it and everything that renders through it.

7 skills.

SkillWhat it is for
BrowserThe browser-side surface: the useAuth composable, the Stripe billing helpers, the API fetch client and browser model loading.
ComposablesThe 90+ reactive composables auto-imported into stx templates: state, DOM interaction, sensors, animation, browser APIs and async operations.
CrosswindThe utility-first CSS engine that styles a Stacks app. Utility classes, theming, responsive design, variants, custom rules and how the CSS is generated.
DesktopDesktop applications through Craft: native windows, the system tray, packaging and Mac App Store delivery.
MobileNative iOS and Android apps: the Craft bridge, mobile builds and the mobile component set.
stxstx is the only templating system in Stacks. Single-file components with <script>, <template> and <style>, Blade-style directives, signals and filters, plus SSR, streaming and hydration.
UIThe UI layer as a whole: components, composables, reactivity, Craft native components, Crosswind styling and accessibility, spanning @stacksjs/ui and @stacksjs/stx.

Every page here describes one SKILL.md under storage/framework/defaults/ai/skills. See Using skills to wire them into your agent.