import { app as card } from "@interactions-hq/skyline";

await space.send(card({
  url: "https://apps.interactions.co.in/poll?s=abc",
  caption: "Vote now",
  summary: "Pick your favorite",
}));
Mini-app cards open in the Interactions shell when tapped. Author apps with @interactions-hq/skyline/authoring: 
import { defineApp, defineRegistry } from "@interactions-hq/skyline/authoring";
iMessage-only — use platform narrowing before sending.