Frequently asked questions

Short answers to common questions.

Do I pay gas to trade?

No gas (relayed or signature only)	Costs gas in USDC (sent from your wallet)
Signing in Perpetual orders, market and limit closes Cancelling orders, including cancel all Leverage changes; switching margin mode needs no signature at all Approving One-Click Trading Take profit / stop loss requests Spot orders when the funds are already in your trading balance	Deposits, and token approvals for them Withdrawals Transfers to another account Spot orders funded straight from your wallet Revoking One-Click Trading on-chain

Applies to Arc Testnet. Arc Mainnet: Coming soon

Which order types are there?

Market and limit. On perpetuals you can add Reduce Only, or attach take-profit / stop-loss (not both on one order). See Place an order.

How is funding charged?

The rate is quoted per hour and accrues continuously on open perpetual positions. See Funding.

What are the fees?

The order form shows the current maker and taker rates before you trade. Rates can change, so this documentation doesn't list them. See Fees.

Why do I need to sign in again?

Your signing key expired, or you are on a new browser. With Remember Me it lasts 7 days; without it, 1 hour.

Are these real funds?

No. Arc Testnet is a test network, and its tokens have no real-world value. Trading on Arc Mainnet is coming soon. Mainnet addresses will be listed on Network and contracts when trading launches there.

Can I use the API?

Yes. See the Developers section for the REST and WebSocket APIs.