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Tools

Essential tools for building and debugging A2UI applications.

Updated: 8/24/2026 Reviewed by: HIA2UI editorial team

A2UI Composer

The A2UI Composer is a visual editor that allows you to generate A2UI JSON specifications by describing the UI component you want. Ideally suited for rapid prototyping and schema generation.

Launch A2UI Composer

How it Works

  1. Describe your Component: Enter a natural language description of the UI element you need (e.g., “A restaurant booking card with an image, rating, and book button”).
  2. Generate JSON: The composer produces the valid A2UI JSON schema.
  3. Integrate: Copy the JSON into your agent’s prompt or response templates.

Validate generated output against the protocol and catalog versions used by your application. See the official Composer documentation and compare renderer examples in Theater.

Input Interface

A2UI Composer Input

Generated Output

A2UI Composer Output