What problem it solves

Language and decision models can generate text and code, but applications need a structured way for agents to compose interactive interfaces without granting them arbitrary executable capabilities. A2UI addresses this by expressing user interfaces as validated data, allowing agents to stream UI to applications through native framework components.

Key features

• Schema-controlled interface generation — Agents describe interfaces as data that can be validated against a schema and constrained by application-defined component catalogs. Arbitrary executable code is not used as the interface representation.

  Source: README

• Streaming agent experiences — The protocol supports progressive rendering and lets an agent adapt the interface as the conversation progresses. Agent SDKs validate model output and convert it into transport messages for renderers.

  Source: README

• Native framework rendering — Applications can render generated interfaces with their existing web or mobile framework, including React, Angular, Lit, Flutter, SwiftUI, and Jetpack Compose. A core library, framework adapter, and component catalog form each renderer.

  Source: README, typescript

• Multi-platform agent integration — Agent SDKs and catalogs support workflows across Python, TypeScript, Dart, Swift, Kotlin, and connected agent frameworks. The repository also includes protocol specifications, conformance material, samples, and evaluation tooling.

  Source: README, specification, conformance

• Developer tooling and local workflows — The workspace includes build, test, lint, and formatting scripts, while the Dart toolset includes a CLI for generating typesafe component code from a catalog. Swift packages are distributed through Swift Package Manager from the repository root.

  Source: README, package.json

Who it may suit

This project may suit developers building agent-driven, remote-rendered, or cross-platform applications that need structured UI generation with application-controlled capabilities.

Topics to discuss

• Which components and catalog capabilities should applications expose to remote or third-party agents?

• How should A2UI evolve for reusable templates and securely attached component logic?

• Which evaluation methods can effectively measure the quality and correctness of generated interfaces?

Written by ReadmeX AI from the project's README, source and public GitHub data; it may contain mistakes.

Read the original README https://github.com/a2ui-project/a2ui#readme

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