Question

Why does my wallet pop up asking me to sign a message?

Answer

Your wallet prompts you to sign so Hyperliquid can confirm that you are the owner of the wallet. This prevents unauthorized access and protects your account.

Last updated:

June 30, 2026

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How do I add a Hyperliquid API key in Sandwich?

Create and authorize an agent wallet on Hyperliquid, then generate your API credentials. Add these credentials in Sandwich, sign the builder code to authorize access, and save once the connection is verified.

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Is this the same as approving a contract on MetaMask?

No. Signing = proof of identity (safe, no gas). Approving a contract = giving permission to spend tokens (not used for login).

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Do I need to sign every time I log in?

Sometimes, yes. For security reasons, Hyperliquid may ask for a new signature when you reconnect or after a session timeout.

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What happens if I reject the signature request?

If you reject it, you simply won’t be able to log in or perform certain actions. No harm is done.

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Can Hyperliquid ever access or move my funds through message signing?

No. Message signing cannot move assets. Only approve or send transactions can move funds, and Hyperliquid does not ask for that during the sign-in process.

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