ADR: CAIPE UI Architecture and Technology Decisions

Field	Value
Date	2026-01-16
Status	🟢 Implemented
Author	AI Platform Engineering Team
Related Issues	N/A

Motivation

The CAIPE (Community AI Platform Engineering) platform needed a modern web UI to visualize A2A (Agent-to-Agent) protocol messages in real-time. The UI needed to support:

1. 3-panel layout: Chat history, main chat interface, and A2A message stream visualization
2. A2A protocol compliance: Full support for the A2A specification events
3. Widget support: Declarative UI components for agent-generated interfaces
4. Use cases gallery: Pre-built scenarios inspired by AG-UI Dojo

Related

• A2A Protocol Specification - Agent-to-Agent protocol

• A2UI Specification v0.8 - Declarative UI spec

• AG-UI Documentation - Agent-User Interaction protocol

• CopilotKit Documentation - AI Copilot framework

• AG-UI Dojo - Interactive demos

• A2UI Composer - Widget builder

• Architecture: architecture.md