How to Trade on Hyperliquid With a Seedless Wallet

You can trade on Hyperliquid from the Vultisig browser extension the same way you would from MetaMask or Rabby. Connect at app.hyperliquid.xyz, deposit USDC from Arbitrum, sign one "Enable Trading" message, and trade. The difference is underneath. Your vault has no seed phrase, and the key that controls your deposits never exists in one place.

Here's how the pieces fit, step by step.

Why a seedless wallet fits Hyperliquid

Think of Hyperliquid as a house with two doors. The front door moves money: deposits, withdrawals, transfers. The side door places orders. Hyperliquid's design keeps them separate, and that's what makes this setup work well.

The front door needs your main wallet's signature. In Vultisig, that signature comes from threshold signing: your vault's key shares sit on separate devices, and a signature needs the threshold of them. No single device, and no seed phrase in a drawer, can move your collateral alone.

The side door uses what Hyperliquid calls an API wallet, also called an agent wallet. When you click Enable Trading, you approve a fresh key that the Hyperliquid site generates in your browser. From then on, that key signs your orders. Hyperliquid's docs are direct about its job: "API wallets are only used to sign." Withdrawals stay a user-signed action that your main wallet has to approve (Privy's Hyperliquid guide).

So you get fast orders with no pop-up per trade, while every dollar going in or out still needs your vault.

What you need

• The Vultisig extension with a vault loaded. A Fast Vault signs from one device with VultiServer as co-signer, which never signs alone. A Secure Vault asks a second device of yours to join each signature.
• USDC on Arbitrum in that vault, plus a little ETH on Arbitrum for gas.
• At least 5 USDC to deposit. Hyperliquid's bridge docs are blunt: "If you send an amount less than this, it will not be credited and be lost forever."

Step by step

1. Connect the extension

Open app.hyperliquid.xyz and click Connect. Vultisig shows up by name in the wallet list, because the extension announces itself through the EIP-6963 wallet standard. Pick it and approve the connection in the extension.

2. Deposit USDC

Click Deposit and choose USDC from Arbitrum. The extension opens a signing request for the transaction. Check the amount and the destination, then approve. With a Secure Vault, your second device joins the signature now.

Hyperliquid says deposits are credited "in less than 1 minute".

3. Enable Trading

Click Enable Trading. Hyperliquid's onboarding guide describes the next step as a request to "sign a gas-less transaction." It's an EIP-712 typed-data message that approves the browser's API wallet. The extension signs EIP-712 messages through the same threshold signing as any transaction.

You do this once per API wallet, not once per trade.

4. Trade

Place orders as usual. The API wallet signs them in the background, so no vault prompt appears for each order, cancel or leverage change.

5. Withdraw

Withdrawing goes back through the front door. The extension asks your vault to sign, and with a Secure Vault the second device joins again. Hyperliquid charges a $1 withdrawal fee (Exchange endpoint docs). Funds land back on Arbitrum within minutes.

What the API wallet can and can't do

The API wallet is a convenience key. Know its limits before you trust it.

• It trades. Orders, cancels and leverage changes on your account.
• It can't withdraw. Withdrawals are user-signed actions that need the main wallet.
• It can't send your funds to another account. Hyperliquid's docs say an agent-signed asset transfer is allowed only when the "Destination must match the source address."
• It expires. Hyperliquid prunes an API wallet when it expires or when the account that registered it no longer has funds (API wallet docs).

The honest part: someone who takes over your browser session could place bad trades with that key. Your collateral can still lose money in a market. It just can't leave the account without your vault.

Hold HYPE in the same vault

Vultisig supports HyperEVM as a chain, so HYPE sits in the same vault as your Bitcoin, Ethereum and the rest. HyperEVM uses chain ID 999, and "HYPE is the native gas token on the HyperEVM". HyperCore, where trading happens, and HyperEVM share HYPE through a system address transfer, which you can start from the Hyperliquid interface.

Know the venue

A seedless wallet protects the key. It doesn't change how Hyperliquid itself works.

• Perps carry leverage. Liquidation risk is the market's risk, not the wallet's.
• Validators can step in. In March 2025, a JELLY position pushed Hyperliquid's HLP vault to a temporary unrealized loss of $13.5 million. Validators voted to delist the market and settle it at $0.0095 (CoinDesk).
• The Arbitrum bridge is secured by validator signatures. The Bridge2 contract approves withdrawals by 2/3 of validator power, with a dispute period on top (Bridge2.sol).

FAQ

Does Hyperliquid work with the Vultisig extension?

Yes. Vultisig appears by name in Hyperliquid's wallet list and connects as a standard EVM browser wallet. The extension supports the methods Hyperliquid's flow uses: EIP-6963 discovery, transactions on Arbitrum, and EIP-712 typed-data signing for Enable Trading and withdrawals.

Do I sign every trade with my vault?

No. You sign the deposit, the Enable Trading approval and withdrawals. Orders are signed by the API wallet in your browser.

Fast Vault or Secure Vault for Hyperliquid?

Both work. A Fast Vault signs deposits and withdrawals from one device. A Secure Vault makes a second device approve every move of money in or out. Trading speed is the same either way, because orders never touch the vault.

What is the minimum deposit on Hyperliquid?

5 USDC through the Arbitrum bridge. Hyperliquid says smaller amounts are not credited and are lost.

Can the Hyperliquid API wallet steal my funds?

It can't withdraw or send funds to a different address. It can trade on your account until it expires, so treat your browser session with care.

Trade fast, keep the keys

Hyperliquid already splits trading keys from money keys. Put the money key in a vault with no seed phrase and no single point of failure, and the door that matters most needs more than one device to open.