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A2UI

Lets AI agents describe screens like forms and cards, which apps then draw with their own buttons and widgets.

New this week

What it does

A2UI (Agent-to-User Interface) is an open standard and set of code libraries that lets AI agents create interactive screens, not just text. An agent sends a description of what the screen should show, written in JSON (a simple structured text format). The app then draws it using its own ready-made parts, such as cards, buttons and text boxes.

Its makers say this keeps things safe, because the agent sends only data, never runnable code. The app keeps a list of approved parts, and the agent can only ask for those. The same description can be shown in web apps built with React, Angular or Lit, in Flutter apps, and in phone apps made with SwiftUI or Jetpack Compose.

Example uses include an agent building a custom booking form during a chat, or making a quick dashboard based on a question. The project also offers a visual editor and a demo theater that run in the browser with nothing to install.

Who it's for

App developers who want AI agents to show forms, cards and other interactive screens inside their apps, on the web or on phones.

Can I use it without coding?

Developers only. It is a set of programming libraries that has to be built into an app, though the visual editor and demos can be tried in a browser. New to this? Start here.

Can I run it?

Cost
FreeNothing to pay or sign up for.
Runs on
Web browser, Phone
Computer
An ordinary computer is fine

Try it

  1. Open the A2UI Composer in your browser to build a sample screen visually, with nothing to install.
  2. Try the A2UI Theater in your browser to watch pre-built examples stream in.
  3. For the full restaurant finder demo, get a Gemini API key and follow the project's Quickstart guide.

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • Plain-AyI is an independent guide and doesn't host or review the software it lists. Please check each project's official page before installing.
  • License (Apache-2.0): Permissive: free to use, change and share, including for business.
  • More on staying safe