Multi-line text input. Wire onChange to a ValueStore setValue to capture typed content.
| Field | Type | |
|---|---|---|
| label | string | optional |
| placeholder | string. Greyed-out hint text, NOT a real value — never submitted if the reader doesn't type. Use `value` instead for a real, editable, submittable pre-fill. | optional |
| value | string. Real pre-filled, editable content — rendered as actual text inside the box, submitted as-is if the reader doesn't change it. If you also declare a ValueStore for this field's onChange, keep its initialValue equal to this same string, or a reader who never touches the box will submit an empty value despite seeing real text. | optional |
| rows | integer (optional, default 4) | optional |
{
"type": "form_textarea"
}{
"identifier": "urn:air:a2uicatalog.ai:atom:form_textarea",
"displayName": "Form Textarea",
"type": "application/vnd.a2ui.atom+json",
"url": "https://a2uicatalog.ai/atoms/form_textarea",
"capabilities": [
"google-apps-script-web",
"mcp-apps"
],
"description": "Multi-line text input. Wire onChange to a ValueStore setValue to capture typed content.",
"representativeQueries": [
"show a multi-line text input area",
"multi-line text input. wire onchange to a valuestore setvalue to capture typed content.",
"render a form textarea"
]
}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