Exponential UI
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Guides

Every platform, then themes, extensions, host plugins, vapps and agents. Every example is a file CI compiles from a fresh project.

01Render

Render A2UI on your platform

Install a renderer, connect a host, paint a surface. About twenty lines each.

Render A2UI in React Install the two npm packages, connect a host, paint a surface with <HostSurface>.Render A2UI in SwiftUI Add the Swift package, hand the painter a host, show a surface on iOS and macOS.Render A2UI in Compose Add the Maven artifact, connect a host, paint a surface in Jetpack Compose.Render A2UI in gpui Add the crates, give the SurfaceView a host plugin, paint natively on the desktop.
02Customise

Make it yours

Themes change the look, extensions add components, host plugins decide what a surface may do.

Write your own theme Tokens, recipes and an extends chain: one JSON file every renderer loads at runtime.Write an extension Custom components: a catalog schema plus a painter per platform, or a macro only.Write a host plugin Functions behind a policy gate, data bindings by source URI, the URL and media policy.
03Build

Build with agents

Ship an app as a declarative package, or let a model answer with UI.

Build and embed a vapp A declarative package of templates, functions and a theme, run in any host.Connect an agent The catalog prompt, A2UI over MCP, and validating what the model sends.
04Compiled in CI

Compiled in CI

The pages show the files in apps/ui-site/guides as they are. guides/check.ts builds each in an empty temp directory from the packed npm packages, the Swift package, local Maven artifacts and path crates:

shell
bun apps/ui-site/guides/check.ts react   # or agent, theme, swift, compose, gpui, all

Complete apps: the samples run web, iOS, Android and gpui hosts against one local A2UI server, with a third-party theme and an extension component.