> For the complete documentation index, see [llms.txt](https://doc.lockerprotocol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.lockerprotocol.com/vault/sign-a-transaction/hyperliquid.md).

# Hyperliquid review screens

What the Vault shows when the extension's Perps tab asks for a signature.

Trading on Hyperliquid needs four kinds of signature, and the Vault gives each one its own screen. Orders themselves are signed in the browser by the [agent key](/browser-extension/hyperliquid-perps/agent-key.md); everything that touches your money comes here.

## Approve a Hyperliquid trading agent

*This key can place and cancel orders on your perps account. It can NEVER withdraw or transfer funds. It lives in the browser extension, encrypted.*

The screen shows the **Agent key** address and its **Expires** date. If it says *This agent never expires. Only approve it if that is what you intend*, refuse unless you know why you would want that.

## Authorize the Locker service fee

*Maximum fee the Locker wallet may add per perps order. It is always shown on the order summary before you trade.* You see the **Maximum rate** and the **Fee recipient**. It is a cap, not a charge.

## Hyperliquid withdrawal

*Withdraws USDC from your Hyperliquid perps account to the address below on Arbitrum. Hyperliquid charges a flat 1 USDC fee.* Check the **Destination**.

{% hint style="danger" %}
*The destination is NOT the requesting account. A compromised computer may be redirecting your funds - refuse unless you chose this address yourself.*
{% endhint %}

## HYPE to HyperEVM, and spot transfers

**HYPE to HyperEVM** — *Moves the amount below from your Hyperliquid spot balance (HyperCore) to the same address on HyperEVM. Hyperliquid credits it as the network's native coin.* The destination is the network's system address, and the Vault names it as such.

**Hyperliquid spot transfer** — *Transfers the amount below from your Hyperliquid spot balance to the destination address.*

{% hint style="danger" %}
*The destination is neither HyperEVM nor the requesting account: this sends your spot balance to someone else. A compromised computer may be redirecting your funds - refuse unless you chose this address yourself.*
{% endhint %}

{% hint style="info" %}
Every one of these is an **EIP-712** message: the Vault shows its domain, the verifying contract and the typed fields under **Technical details**. **Testnet action - this is not the real Hyperliquid environment** means the request is for the test network.
{% endhint %}

## Learn more

* [Hyperliquid perps in the extension](/browser-extension/hyperliquid-perps.md)
* [HYPE between HyperCore and HyperEVM](/browser-extension/hyperliquid-perps/hype-and-hyperevm.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://doc.lockerprotocol.com/vault/sign-a-transaction/hyperliquid.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.