QA — open-gen-ui

Scope

Manual QA for the minimal Open Generative UI demo. The agent emits a generateSandboxedUi tool call on every turn; the runtime's OpenGenerativeUIMiddleware converts that into activity events that mount the authored HTML/CSS in a sandboxed iframe.

Happy path

• Navigate to /demos/open-gen-ui.
• Composer shows the four visualization suggestion pills.
• Click "3D axis visualization (model airplane)" — a sandboxed iframe mounts showing an airplane cycling through pitch/yaw/roll rotations.
• Click "How a neural network works" — an iframe mounts showing a layered network with forward-pass activations.

Regression

• The rendered scenes include axis labels, a legend, and a title.
• No console errors from the sandboxed iframe.

Known gaps

• Strands backend uses the shared agent; the generateSandboxedUi frontend-registered tool is resolved via ag_ui_strands' frontend-tool proxy. The design skill prompt lives on the frontend via openGenerativeUI.designSkill.