Category: Core
Full-width app-style page header with title, subtitle, icon, accent color, and optional tag badge. Sets the visual tone of a pop-up app or brief. Use as the first block of any page.
| Field | Type | Required |
|---|---|---|
| title | string (required, markdown) | required |
| subtitle | string (optional, markdown) | optional |
| icon | string (optional, emoji or short text) | optional |
| tag | string (optional, badge label shown in accent pill) | optional |
| accent | string (optional, hex, default "#4f46e5") | optional |
| theme | string (optional, "light"|"dark", default "light") | optional |
| background | string (optional, css background override — now honoured in dark theme too, added 2026-07-24; previously silently discarded in favour of the dark default) | optional |
| meta | array (optional, added 2026-07-24). Array of {label, value} shown as a small monospace stat row under the header — e.g. a title-block summary line for a reference/spec page. | optional |
{
"type": "page_header",
"title": "Page Header"
}{
"identifier": "urn:air:a2uicatalog.ai:atom:page_header",
"displayName": "Page Header",
"type": "application/vnd.a2ui.atom+json",
"url": "https://a2uicatalog.ai/atoms/page_header/",
"capabilities": [
"web",
"google-apps-script-web",
"pdf",
"mcp-apps",
"android",
"slides",
"pptx"
],
"description": "Full-width app-style page header with title, subtitle, icon, accent color, and optional tag badge. Sets the visual tone of a pop-up app or brief. Use as the first block of any page.",
"representativeQueries": [
"show a app-style page header \u2014 title, subtitle, icon, accent, tag badge",
"full-width app-style page header with title, subtitle, icon, accent color, and optional tag badge. s",
"render a page header"
]
}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