Hyperliquid App Integration: OneKey Wallet Tutorial

Why Hyperliquid Matters in Today’s Onchain Trading Landscape

Onchain perpetuals have shifted from “experimental DeFi” to a serious trading venue, and Hyperliquid is often cited as the category leader thanks to its performance-oriented design and exchange-like experience. In 2025, industry reporting highlighted Hyperliquid’s rapid growth in DeFi derivatives volume and market share, reflecting a broader user demand for deeper liquidity, tighter spreads, and faster execution—without fully outsourcing custody to a centralized platform. Reference: CoinDesk coverage. (coindesk.com)

For users who care about self-custody and operational security, connecting Hyperliquid with a wallet that supports modern dApp connectivity flows is critical. This is where the OneKey wallet fits naturally: it supports EVM usage patterns and WalletConnect-style connections that many DeFi apps rely on.

This tutorial walks through: what Hyperliquid is, how the Hyperliquid app works, and how to connect and trade using OneKey—plus a practical security checklist tailored to common user concerns (phishing, approvals, and session hygiene).

What Is Hyperliquid? (Core Concepts You Should Know)

Hyperliquid Trading: Collateral, Deposits, and Gas Expectations

On the main Hyperliquid trading app, the most common onboarding path uses USDC on Arbitrum as collateral. Deposits are designed to be straightforward, and Hyperliquid’s documentation emphasizes that only USDC deposits from Arbitrum are supported for that standard deposit flow, with a minimum deposit threshold that users should not ignore. Reference: Hyperliquid deposit FAQ. (hyperliquid.gitbook.io)

A key UX feature is that trading itself is designed to feel “exchange-like”: you are not paying L1 gas for every order placement, while deposits (from Arbitrum) still require normal network gas. Hyperliquid’s official onboarding guide also documents the withdraw flow and fee model at a high level. Reference: Hyperliquid onboarding guide. (hyperliquid.gitbook.io)

HyperEVM: Programmability Around Hyperliquid’s Ecosystem

Separately from the core trading experience (“HyperCore”), Hyperliquid also documents HyperEVM, an EVM execution environment secured by the same consensus, where HYPE is the native gas token and the mainnet Chain ID is 999. Reference: HyperEVM docs. (hyperliquid.gitbook.io)

For users, this matters because your wallet may need custom network configuration to view assets or interact with HyperEVM apps. Hyperliquid provides user-facing guidance for adding HyperEVM to a wallet and moving assets between Core and EVM. Reference: “How to use the HyperEVM”. (hyperliquid.gitbook.io)

Why Use OneKey with Hyperliquid?

Using Hyperliquid safely isn’t only about picking a fast venue—it’s about how you connect and how you authorize actions.

Depending on your setup, OneKey can help you:

• Keep self-custody while interacting with a high-performance perps venue
• Use a familiar wallet approval flow for connections and signatures
• Optionally add an extra layer of protection by keeping signing isolated from your day-to-day browsing environment (especially useful when the market is volatile and phishing attempts spike)

Before You Start: Checklist (Do This Once)

1) Use the correct Hyperliquid entry point

• Bookmark the official web app: app.hyperliquid.xyz
• Avoid “sponsored” lookalike domains and random referral links in replies/DMs

2) Prepare funds on Arbitrum

You typically need:

• USDC on Arbitrum (trading collateral)
• A small amount of ETH on Arbitrum (to pay deposit gas)

If you need the canonical bridge, use: Arbitrum Bridge

3) Update OneKey Wallet

Make sure your OneKey Wallet app/extension is updated so WalletConnect connections and signature prompts behave correctly.

Step-by-Step: Connect OneKey to the Hyperliquid App

Step 1 — Open the Hyperliquid app and start connection

1. Go to Hyperliquid web app
2. Click Connect (top-right)

At this point Hyperliquid will offer connection methods. The most universal route is WalletConnect, because it works cleanly across desktop + mobile flows and reduces “browser injection” ambiguity.

Step 2 — Connect via WalletConnect (recommended)

1. Choose WalletConnect
2. A QR code (or connection prompt) will appear
3. In OneKey Wallet:
   • Use the WalletConnect scanner
   • Scan the QR code
4. Carefully verify the dApp details shown in OneKey, then approve the session

WalletConnect connections are session-based: you’re approving a “relationship” between the dApp and wallet until you disconnect (or the session expires). If you want to understand how sessions are established and managed, see the official WalletConnect session documentation. (docs.walletconnect.network)

Step 3 — Enable trading (signature prompt)

After connecting, Hyperliquid typically requires an Enable Trading step which triggers a signature request in your wallet.

• Read the request in OneKey carefully
• Confirm you are still on the correct domain
• Approve only if the action matches what you are doing (enabling trading in the official app)

Hyperliquid’s onboarding guide explicitly includes the “Enable Trading” step in its wallet-connection flow. Reference: Hyperliquid onboarding guide.

Deposit USDC (Arbitrum) to Start Trading

Step 4 — Deposit USDC from Arbitrum

1. In the Hyperliquid app, click Deposit
2. Select USDC (Arbitrum)
3. Enter the amount and confirm
4. Approve the transaction in OneKey Wallet

Important guardrails from Hyperliquid docs:

• Only USDC via Arbitrum is supported for the standard deposit path
• If you deposit the wrong asset, it may not credit as expected
• There is a minimum deposit amount you should respect

Review the official warning here: Deposited via Arbitrum network (USDC). (hyperliquid.gitbook.io)

Place Your First Trade (Perps) Without Overexposing Your Wallet

Step 5 — Pick a market, choose order type, manage leverage

Inside Hyperliquid:

• Select a perp market
• Choose Long or Short
• Use limit orders when possible (reduces slippage risk compared to pure market orders)
• Keep leverage conservative until you understand funding rates and liquidation mechanics

Hyperliquid’s own “How do I trade perpetuals” section outlines the basic flow (market selection → long/short → size/leverage → place order). Reference: Hyperliquid onboarding guide.

Risk notes users care about (and should)

• Liquidations happen fast in high-volatility conditions
• Funding can materially change PnL if you hold positions for long durations
• Wallet security ≠ trading risk management: even perfect custody doesn’t protect you from poor leverage sizing

Withdraw Back to Arbitrum (Operational Hygiene)

Step 6 — Withdraw USDC

When you’re done trading (or simply reducing platform exposure):

1. Click Withdraw
2. Choose Withdraw to Arbitrum
3. Confirm in OneKey as required

Hyperliquid’s onboarding guide documents the withdraw location and notes a withdrawal fee model. Reference: Hyperliquid onboarding guide. (hyperliquid.gitbook.io)

Optional: Use OneKey with HyperEVM (Network Setup + Transfers)

If you want to interact with HyperEVM apps (or simply view assets):

Step 7 — Add HyperEVM to OneKey (custom network)

Hyperliquid documents the canonical parameters for adding HyperEVM to a wallet extension, including Chain ID 999 and the official RPC endpoint. Reference: HyperEVM user guide. (hyperliquid.gitbook.io)

Use these network details:

Network Name: Hyperliquid
RPC URL: https://rpc.hyperliquid.xyz/evm
Chain ID: 999
Currency Symbol: HYPE
Explorer (optional): https://hyperevmscan.io/

You can also cross-check Chain ID 999 here: Chainlist (HyperEVM / 999)

Step 8 — Move assets between Core and EVM

Hyperliquid describes transfers between HyperCore spot balances and HyperEVM via in-app transfer controls, and also documents a specific address-based method for moving HYPE. Reference: “How to use the HyperEVM”.

Security Checklist (Read This Before You Click “Approve”)

1) Treat WalletConnect like an API key

A WalletConnect session is powerful: a malicious site doesn’t need your seed phrase to cause damage if you approve the wrong requests.

• Disconnect sessions you no longer use
• Avoid connecting from random devices or public networks

WalletConnect also documents that sessions persist until disconnected or expired. Reference: WalletConnect sessions. (docs.walletconnect.network)

2) Verify chain + action every time

Common red flags:

• Unexpected network switches
• Signing requests that appear unrelated to “connect” or “enable trading”
• Urgent popups claiming you must “sync” or “upgrade” your wallet

3) Separate trading convenience from long-term storage

A practical approach:

• Keep a dedicated trading account/wallet for frequent dApp activity
• Withdraw excess funds periodically
• Keep long-term holdings in a more locked-down setup

Troubleshooting: Common Issues and Quick Fixes

Connection prompt not showing / session expired

WalletConnect proposals can expire, and stale sessions can get “stuck” depending on browser state.

Try:

• Disconnect the session in OneKey Wallet
• Refresh the Hyperliquid tab
• Reconnect using a new QR code
• If needed, switch browser or disable conflicting extensions

WalletConnect also documents proposal/session request timing behavior that can surface as expiry or timeout issues. Reference: WalletConnect best practices. (docs.walletconnect.network)

Deposited but balance not credited

Double-check:

• You deposited USDC on Arbitrum (not another token, not another chain)
• Your amount was above the minimum threshold
• You are viewing the correct connected account in the app

Start here: Hyperliquid deposit troubleshooting

Final Thoughts: A Practical Way to Trade Hyperliquid with OneKey

Hyperliquid’s momentum reflects a clear trend: users want CEX-like execution with onchain transparency and self-custody-friendly access. Pairing Hyperliquid with OneKey can be a strong operational setup if you:

• Connect via WalletConnect thoughtfully
• Keep deposits conservative until you’ve tested end-to-end flows (deposit → trade → withdraw)
• Maintain strict session and approval hygiene

If your priority is reducing key-exposure while still staying active in onchain markets, using OneKey as your daily DeFi wallet (and optionally combining it with more locked-down signing practices) is a sensible way to interact with Hyperliquid without compromising on self-custody.