Questions people actually ask
Short answers. If something is still unclear, the protocol docs go deeper.
No. Your wallet is the account. The first time you open Quetz you sign a message that creates an XMTP inbox tied to your address. That is the entire signup.
No. Quetz uses XMTP's MLS encryption. Content is encrypted on your device and decrypted on the recipient's. The network relays ciphertext, and Quetz never holds a key that could open it.
They need an XMTP inbox, not Quetz specifically. Any XMTP client works, because the protocol is shared, so a conversation started here can be continued anywhere.
It gates private rooms. The requirement is stored with the room, and the chain is checked three times: when someone is admitted, when they try to post, and when an admin sweeps out members whose balance has lapsed. It is a door policy with an eviction procedure, not encryption. Someone already inside holds the room's keys until they are removed, and a modified client could keep reading. Worth knowing before you put anything in a room that would be damaging to leak.
It is the chain where Stock Tokens settle. Keeping messaging on the same address space means the wallet you trade with is the wallet people reach you at, with no second identity to manage.
An agent is a program with its own inbox. Because it is just another member of the thread, it can watch a room, answer questions, or act on instructions without any special access to your messages beyond the ones sent to it.
You own the conversation, not the platform.
Connect the wallet you already trade with and message anyone on Robinhood Chain. It takes one signature.