What it is
The short version.
The wallet is a viewer. You paste a QUAD stack address and it shows you that account everywhere at once: how much it holds on Core, Infra, Bridge, and Liquid, the address to receive on each chain, and the validators you can look up. There's no sign-in and nothing to install — open the page, paste an address, look.
It's the same account on every chain. One address, re-shown under each chain's name, so you don't have to juggle four versions of yourself.
It only reads — and that's on purpose
A wallet that lives at a web address and also holds your keys is the easiest thing in crypto to drain — one bad link, one bad day, and the keys are gone. So this one is built to make that impossible: it holds no keys, and it cannot sign, send, move, or spend anything. All it can do is show you public information that's already on the chains.
That means opening this page is harmless. There's nothing here for an attacker to steal, because there are no secrets here to begin with. The riskiest button does nothing more than copy an address to your clipboard.
The other half — actually signing, holding keys, and moving value — lives only in the installed app, where the keys stay on your own device and never touch a web page. The viewer and the vault are deliberately kept apart.