Rooms: work on one board together

A room is a live copy of one board. The host opens it from the Room button in the top bar and gets two links: an edit link and a view-only link. Anyone who opens a link joins the room. There are no accounts, no friend lists and no room directory, so a room can be reached only through its link.

• Up to 8 people can be in a room at once. A ninth person sees This room is full (8 people).
• Everyone sees live cursors with a name tag and a colour, and live selections.
• Adding, moving, resizing and deleting widgets, widget settings, titles, frames, notes, feeds edges, the board name and the canvas look all sync.
• It works the same on the web app and on the desktop app, and a desktop user and a web user can share one room.
• Your camera stays your own. Nobody drags your view around.
• Undo only reverses your own edits, never another person's.

Each person still fetches their own market data. Two people see the same widget with the same settings, not the same network response, so a price can differ by a tick between screens.

Everything in a room is encrypted on your device before it is sent, and decrypted on the other person's device. The room key lives only in the link. The relay, which is a small server on cashboard.live, stores and forwards ciphertext.

See Privacy and data for what the web and desktop apps store and send outside rooms.

The host pays for room time. Guests pay nothing. Room time is sold by the room day, which is 24 hours of a live room. The default price is 1 USDC per room day, and you can buy 1, 7 or 30 days at a time. The price is set by the operator of the server and the dialog shows the total before you confirm.

1. 1

   Open the room dialog

   Select Room in the top bar and choose how many days to buy.

2. 2

   Pay with a browser wallet

   Pick Base or Solana under Pay on, then the wallet. Payment is in USDC through the x402 payment protocol: an EVM wallet such as MetaMask, Rabby or Coinbase Wallet pays on Base, and a Solana wallet such as Phantom, Solflare or Backpack pays on Solana. Your wallet shows the amount and asks you to sign. On Solana the network fee is paid by the payment facilitator, so you only need USDC. No account, email or card is involved.

3. 3

   Share the links

   When the payment settles the room is live and the dialog shows Copy edit link and Copy view link.

• On the desktop app the payment finishes in your browser, then the room opens in the app.
• To add days, use Extend. Extending a room is done from the web app, and the new days are added to the time that is left.
• Guest entry fees, paying in SOL or other tokens, and chat or voice are not part of rooms.

Leaving a room never loses work. Your copy of the board stays on your device as a normal local board, with the room edits you had seen, and it stops syncing.

• Leave disconnects you and keeps the board. Leaving also stops automatic rejoining on this device.
• When the paid time runs out, everyone sees This room has ended. and keeps the board as a normal local board.
• If your connection drops, you keep working. Edits made offline merge when the connection returns.
• If the host does not extend, guests can still export the board or copy it. See Templates, import, export and share links.

Rooms are off until the server turns them on. The settings live in .env.example: CASHBOARD_ROOMS_ENABLED turns the feature on, CASHBOARD_ROOM_PRICE_USDC sets the price per room day, and VITE_CASHBOARD_ROOM_RELAY_URL points the app at the relay, which is wss:// plus the canonical host. Payment reuses the x402 and key-value store settings that the paid Signals tools already use. Base needs CASHBOARD_X402_PAY_TO_BASE; with CASHBOARD_X402_PAY_TO_SOLANA set, hosts can also pay on Solana, and on mainnet the room API reads recent blockhashes from CASHBOARD_SOLANA_RPC_URL when it is set.