Auto-detecting media embed that accepts a raw URL and builds the correct iframe for YouTube, Loom, Google Slides, or Vimeo. Displays a labelled card shell with a skeleton shimmer while loading. Designed for stage-first delivery where the URL is the only payload.
| Surface | Note |
|---|---|
| Renders as a linked thumbnail image only | |
| Renders as a static linked image placeholder |
| Field | Type | |
|---|---|---|
| url | string (required). Raw URL — YouTube, Loom, Google Slides, Vimeo, or any embeddable URL. Platform is auto-detected. | required |
| title | string. Card label shown above the iframe. Defaults to detected platform name. | optional |
| height | string. CSS height for the iframe container. Default 360px. | optional |
{
"type": "media_stream_card",
"url": "https://example.com"
}{
"identifier": "urn:air:a2uicatalog.ai:atom:media_stream_card",
"displayName": "Media Stream Card",
"type": "application/vnd.a2ui.atom+json",
"url": "https://a2uicatalog.ai/atoms/media_stream_card",
"capabilities": [
"web",
"google-meet-stage",
"google-apps-script-web",
"mcp-apps"
],
"description": "Auto-detecting media embed that accepts a raw URL and builds the correct iframe for YouTube, Loom, Google Slides, or Vimeo. Displays a labelled card shell with a skeleton shimmer while loading. Designed for stage-first delivery where the URL is the only payload.",
"representativeQueries": [
"show a Auto-detecting YouTube/Loom/Slides/Vimeo embed with skeleton",
"auto-detecting media embed that accepts a raw url and builds the correct iframe for youtube, loom, g",
"render a media stream card"
]
}The renderer is an open-source Google Apps Script web app. Deploy your own instance in 4 commands — you own the URL, no dependency on the demo endpoint.
git clone https://github.com/a2uicatalog/a2ui
cd a2ui/apps-script-surface/gas-wired-renderer
clasp push && clasp deploy