# Caution Block

Renders a high-visibility callout box warning readers about potential pitfalls or destructive actions.

## Surfaces

web, google-apps-script-web, mcp-apps

## Fields

| Field | Type |
|---|---|
| message | string. The warning content. |

## Example payload

```json
{
  "type": "caution_block",
  "message": "Your action was completed successfully."
}
```

Live page: https://a2uicatalog.ai/atoms/caution_block/
Full field contract: https://a2uicatalog.ai/spec.json