Choose an Account Type

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First, understand Hyperliquid API Wallets

A Hyperliquid API Wallet, also called an Agent Wallet, is a signing agent authorized by a master account. It can sign supported trading actions for that master or its native sub-accounts. Generating or authorizing an API Wallet does not create another Hyperliquid master account or allocate separate trading funds. Query balances, positions, and profit or loss using the actual master or sub-account address, not the API Wallet address. See Hyperliquid’s API Wallet documentation. API Wallet authorization cannot sign a deposit from your funding wallet or withdraw the master’s funds to an external wallet. Deposits are initiated by the wallet holding the funds; withdrawals require the master wallet’s signature. The API Wallet is not a deposit destination. This distinction concerns external deposits and withdrawals; it does not mean agents have no permissions for any internal fund operation. See Hyperliquid’s deposit guide and withdrawal endpoint.

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Then separate Owly login from trading accounts

Owly uses “sub-account” as a general label for the trading accounts you manage. The creation page offers API Wallet, Hyperliquid Sub-account, and Owly Managed. Only the second option uses a native Hyperliquid sub-account.

• Owly main account: the wallet used to sign in to Owly and manage accounts.
• Trading account: the account that holds your Hyperliquid trading funds and positions.
• API Wallet: an authorized signing agent for a trading account, not that funded trading account itself.

Your Owly main account and trading account can use the same wallet address. You can also sign in with one address and add another as a separate trading account. With separate addresses, check the login, funding, and signing addresses individually. Using one address does not require creating a second wallet account. Each Owly main account can have up to 10 active trading accounts at a time, counted across all three types. This is Owly’s account limit, separate from Hyperliquid’s native sub-account eligibility and quota below.

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Compare the three options

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Owly’s API Wallet account type

This type uses a separate Hyperliquid master account—an EVM address holding the funds. It is not a native Hyperliquid sub-account. To add multiple trading accounts of this type, prepare different master addresses, rather than creating several API Wallets for one master. One of these trading accounts can use your Owly login address; “separate” does not require a different address from your login. Choose API Wallet, then enter an account name, the API Wallet’s Hyperliquid master account address, and its authorized private key in the import form. “API Wallet Master Account” means the trading account; it does not necessarily mean your Owly login address. The authorized API Wallet signs trading actions; funding and withdrawals use the wallet signing flows explained above. Owly checks the API Wallet and guides any required authorizations based on account state. When a signature is needed, use the trading account that authorized the API Wallet and review the site, address, and authorization in your wallet. Creation may finish directly when the relevant authorizations are already complete. For your first account, follow Quick Start to prepare, fund, authorize, and import it.

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Hyperliquid Sub-account

This is a native sub-account under a Hyperliquid master, distinct from the separate master accounts above. Under Hyperliquid’s rules, reaching $100,000 in trading volume** unlocks up to **10** sub-accounts. Every additional **$100,000,000 in volume adds one, up to 50. Ten is therefore the base quota, not Hyperliquid’s final hard cap. Even with a higher Hyperliquid quota, Owly’s combined limit remains 10 active trading accounts at a time across all three types. Sign in to Owly with the Hyperliquid master wallet that owns the sub-account, then choose Hyperliquid Sub-account to load that wallet’s sub-accounts. Select an existing sub-account, enter a name and its dedicated API Wallet private key, then follow validation and authorization prompts. An already added sub-account cannot be selected again. If the list is empty, check the master wallet and visit Hyperliquid Sub-accounts. If you have not created one, first meet the requirements above and check the eligibility currently shown by Hyperliquid. To delegate management, continue with the Asset Owner Guide.

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Owly Managed: a wallet created by Owly

Choose Owly Managed, enter a name, and create the account. Owly generates and manages its trading wallet. This creation path does not ask you to import your wallet private key or an API Wallet private key. Setup requires fewer steps, but you do not directly hold the trading wallet private key. After creation, check the displayed account details and use the funding controls actually available for that account.

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Where sensitive information belongs

• Never send your seed phrase, Owly login wallet private key, or trading master wallet private key to the Assistant, support, or a third party. Do not enter them in the API Wallet private key field.
• Enter the API Wallet private key only in Owly’s existing API Wallet Private Key form. Do not paste it into the Assistant, messages, documents, or screenshots.
• The Assistant can explain steps using the account type, whether an account already exists, and public addresses. Review and complete connections, authorizations, deposits, transfers, and trades yourself on the relevant page.
• A leaked API Wallet can enable malicious trading and losses. If compromised or expired, handle the old authorization on Hyperliquid and configure a newly generated API Wallet for Owly.