Agentic typeface: the words an agent supplies assemble out of thousands of coloured particles that fly in from random positions and settle into the letterforms; the pointer scatters them and they reform. Text is rasterised on an offscreen canvas and sampled into particle targets, so any string works, at any panel size, in a system font. Honours prefers-reduced-motion (renders the settled word), pauses offscreen, DPR-aware. The words are also emitted as visually-hidden text so they stay readable and selectable. Sibling of light_type (words as flowing light) and living_type (letters that breathe). Every option is an enum or a clamped int; text is JSON-encoded into the script with "<" escaped, so it can never break out.
| Surface | Note |
|---|---|
| Renders as a dark panel; the words remain as visually-hidden text, the canvas is empty without JavaScript | |
| google-chat | Inline script not supported; renders as a solid panel |
| Field | Type | Required |
|---|---|---|
| text | string (required). The words to set, up to 3 lines separated by "\n", each trimmed to 40 characters. Short and bold reads best. Default "A2UI". | required |
| font | "sans" | "serif" | "mono" | "display" (optional, default "sans"). System font stacks; no webfont is loaded. | optional |
| weight | "regular" | "bold" | "black" (optional, default "black") | optional |
| colors | array of 1-4 "#rrggbb" strings. Default ["#38bdf8","#818cf8","#f472b6"], applied left to right across the words. Invalid entries are dropped. | optional |
| background | "#rrggbb". Default "#070a12". | optional |
| height | integer. Panel height in px, clamped 160-900. | optional |
| interactive | bool. Pointer affects the letters. Default true. | optional |
| density | "low" | "normal" | "high" (optional, default "normal"). Particle count cap 1200 / 2400 / 4200. | optional |
| dot | "fine" | "normal" | "bold" (optional, default "normal"). Particle radius. | optional |
{
"type": "particle_type"
}{
"identifier": "urn:air:a2uicatalog.ai:atom:particle_type",
"displayName": "Particle Type",
"type": "application/vnd.a2ui.atom+json",
"url": "https://a2uicatalog.ai/atoms/particle_type",
"capabilities": [
"web",
"google-meet-stage",
"google-apps-script-web",
"mcp-apps",
"android"
],
"description": "Agentic typeface: the words an agent supplies assemble out of thousands of coloured particles that fly in from random positions and settle into the letterforms; the pointer scatters them and they reform. Text is rasterised on an offscreen canvas and sampled into particle targets, so any string works, at any panel size, in a system font. Honours prefers-reduced-motion (renders the settled word), pauses offscreen, DPR-aware. The words are also emitted as visually-hidden text so they stay readable and selectable. Sibling of light_type (words as flowing light) and living_type (letters that breathe). Every option is an enum or a clamped int; text is JSON-encoded into the script with \"<\" escaped, so it can never break out.",
"representativeQueries": [
"show a agent-supplied words assemble from particles; pointer scatters them",
"agentic typeface: the words an agent supplies assemble out of thousands of coloured particles that f",
"render a particle type"
]
}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