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To trade on Arcus you need a supported wallet, funds in it, and eligibility in your region. New users can create a wallet with email or social sign-in; existing wallets connect directly. Funds are deposited through an in-app flow powered by Fun and settle to your Arcus account as USDG, the protocol’s settlement stablecoin.
This page covers the concepts. The deposit and withdrawal flows themselves are part of the app experience; the cross-chain routing described here is handled for you.

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What you need to start

  • A supported wallet — created in-app via email or social sign-in, or connected from an existing self-custody wallet.
  • Funds to trade with (these arrive as USDG; see below).
  • Eligibility in your region.

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Collateral: USDG

Arcus settles in USDG, a regulated stablecoin issued by Paxos under the Global Dollar Network, redeemable 1:1 for USD and backed by cash and US Treasuries. Whatever you deposit is converted to USDG and credited to your Arcus account. Multi-asset collateral (such as BTC and ETH) is on the roadmap.

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Depositing through Fun

Deposits run through the Fun flow. You first choose whether the funds land in USDG (Perps) or USDG (Spot), then pick a route:
RouteHow it works
Transfer cryptoSend crypto from a self-custody wallet on any major chain (Bitcoin, Ethereum, Solana, Base, Arbitrum, and others). It converts to USDG on arrival — typically instant.
Connect an exchangePull funds directly from a centralized-exchange balance (Coinbase at launch, more coming).
Use cashPay with Apple Pay, card, Google Pay, or AstroPay. A processing fee applies and is shown before you confirm.
Behind a single deposit address, Fun automatically swaps and bridges your deposit to USDG and delivers it to your Arcus account in one atomic (all-or-nothing) flow, routing through established non-custodial bridges (such as Circle CCTP, Relay, Across, and LayerZero) selected by asset, route, and size. The route, fees, and estimated time are always shown before you confirm. Arcus charges no deposit fee of its own, and USDG deposits and withdrawals carry zero fees; any third-party processing or conversion cost is displayed upfront.
Fun is a third-party onboarding provider. For the full list of supported chains, payment methods, limits, and fees, see fun.xyz and the Fun help guide.

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Next steps

Perpetuals overview

What you can trade and how 24/7 perps work.

Authentication

Generate an API key and start trading programmatically.