a2ui
A2UI Development Skill
This skill helps you generate A2UI (Agent to UI) protocol compliant code for building rich, interactive user interfaces that AI agents can stream to clients.
Protocol Version
This skill targets A2UI Protocol v0.8 (Stable Release).
Standard Catalog ID: https://github.com/google/A2UI/blob/main/specification/0.8/json/standard_catalog_definition.json
Core Concepts
1. Message Types
A2UI uses four message types in a JSONL stream:
| Message | Purpose |
|---|---|
surfaceUpdate |
Define or update UI components |
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