# QA: Frontend Tools — Mastra

## Test Steps

- [ ] Navigate to `/demos/frontend-tools`
- [ ] Verify the background container (`data-testid="background-container"`) is visible
- [ ] Ask: "Change the background to a sunset gradient"
- [ ] Verify the background container style changes away from the default

## Expected Results

- `useFrontendTool` handler is invoked by the agent
- Background updates after the tool completes