Each example covers one part of window.vos and shows every call it makes, what came back and the errors you can get. Copy the helpers at the bottom of each page into your own app.
my-app/. It has a blank index.html with the dev script already in place, and a vibe.json for its name and permissions. Open itcd my-app && node ../vibeos-pack.mjs index.html vibe.json
my-app, the browser can't read vibe.json from a double-clicked page, so permissions are only checked when you serve the folder (npx serve .). The examples keep their manifest inside the page, so they're checked either way.