QA: Declarative Generative UI (A2UI — Dynamic Schema) — PydanticAI

Prerequisites

• Demo is deployed and accessible
• Agent backend is healthy (check /api/health)
• OPENAI_API_KEY set — the secondary LLM inside generate_a2ui calls the OpenAI API directly.

Test Steps

1. Basic Functionality

• Navigate to /demos/declarative-gen-ui
• Verify the chat interface loads and suggestion pills render

2. Dynamic A2UI

• Click "Show a KPI dashboard"
• Verify the agent calls generate_a2ui and a dashboard with KPI metric cards (revenue / signups / churn) renders inline
• Click "Pie chart — sales by region" and verify a donut chart renders with a legend
• Click "Bar chart — quarterly revenue" and verify a bar chart renders

3. Error Handling

• Verify no console errors during normal usage
• Verify no duplicate render_a2ui tool appears (confirms injectA2UITool: false is wired correctly)

Expected Results

• The backend PydanticAI generate_a2ui tool generates a surface via a secondary LLM and returns an a2ui_operations container
• The runtime's A2UI middleware detects the container and streams the surface to the frontend's catalog renderer