One account for all eighteen.
Bring your own wallet. Sign in with one signature. Let Foundry place orders for you, never withdraw. Approve the fee once, in dollars per $100. Then every app on the wall is one tap.
This build talks to Hyperliquid testnet. Passkeys, for people without a wallet, arrive when the Privy app ID lands.
Use your own wallet
Rabby, MetaMask, or any wallet in this browser. Your keys stay with you. Foundry only ever asks for two signatures: one to sign in, one to let its agent place orders. The agent can never withdraw.
Install Rabby or MetaMask, then reload.