One token. USDC does everything.
LoadLine launches and trades on Circle's Arc. Gas is paid in USDC and value moves across chains on its own. You never need ETH to top up or a bridge to babysit. The balance you trade with is the only one you need.
Pay gas in USDC
Every fee on Arc settles in USDC. No ETH to top up. No gas token to keep an eye on. What you trade with is what pays.
USDC-native gasBring USDC from anywhere
Move USDC in from Ethereum, Base, Arbitrum, Solana and more over Circle's CCTP. It lands native on Arc. No wrapped tokens. No manual bridging.
CCTP · Unified BalanceFirst moves can be free
Circle's Gas Station can sponsor gas for eligible wallets so a first launch or trade costs nothing. Smart-contract wallets can pay gas in USDC too.
Gas Station · PaymasterScreened and transparent
Wallet screening and transaction monitoring run through Circle's compliance pipeline on every trade. The same rails the big institutions already use.
Compliance · WebhooksWhere you'll use it in LoadLine
Each Arc primitive maps to something you actually do here.
Launching a token
Deploy a bonding-curve token or a fundraising raise. Gas comes out of your wallet in USDC. No ETH, no faucet, no bridge first.
Go to LaunchBuying or selling
Every swap on a curve or the DEX settles gas in USDC and clears Circle's compliance screening on its own. Nothing to toggle. It just happens.
Explore tokensGetting USDC onto Arc
Holding USDC on Ethereum, Base, Arbitrum, Solana or more? Bridge it over with Circle CCTP. It lands native on Arc and is ready to trade.
Bridge USDCCovering your first gas
New or low-balance wallet? Circle's Gas Station can sponsor a handful of transactions for eligible wallets. Connect and check your status.
Check Gas StationUsing a smart-contract wallet
On an ERC-4337 / smart-contract wallet instead of an EOA? Circle Paymaster lets it pay gas in USDC too. Grab the deployed paymaster addresses.
Paymaster detailsBuilding on LoadLine data
Candle history and trade streams are metered per call with Circle x402. Fractions of a cent. Pay only for what you read. No subscription.
See the stackTools
Live against the Arc + Circle stack. Connect a wallet to use them.
CCTP Bridge
Bridge USDC between Arc and other chains via Circle's Cross-Chain Transfer Protocol.
Connect wallet to auto-fill
Estimates run against the Arc API. Execution moves USDC over Circle CCTP and is gated behind an x402 payment in production.
Gas Station
Circle sponsors gas fees for eligible transactions.
Connect your wallet to check eligibility.
Circle Paymaster
Pay gas in USDC via ERC-4337. 10% surcharge. Requires SCA wallet.
Every Circle primitive, wired in
Built on Arc from day one, not ported over later.USDC Native Gas
LiveGas on Arc is paid in USDC. LoadLine trades in 6-decimal USDC and the chain covers the gas. One token the whole way.
x402 Nanopayments
LivePremium data endpoints metered by Circle x402. Fractions of a cent per candle or trade stream. No subscription.
CCTP / BridgeKit
ReadyNative USDC transfers between Arc and Ethereum, Base, Arbitrum, Polygon, Solana, Optimism and Avalanche.
Circle Paymaster
ReadyERC-4337 paymasters on Arc testnet let smart-contract wallets pay gas in USDC.
Gas Station
ReadyCircle-sponsored gas for eligible wallets. A handful of free transactions each. No SDK required.
Compliance Engine
ReadyWallet screening through Circle's Chainalysis / Elliptic / TRM pipeline with a configurable risk threshold.
Webhooks
ReadyCircle transaction monitoring with configurable swap-size alerts and contract filters.
Unified Balance
ReadySpend USDC held across chains straight into Arc. Sourcing is handled for you. No manual bridging.
Forwarding Service
ReadyUSDC delivered to a recipient without them needing to hold a gas token first.
Envio HyperIndex
LiveLive indexer on arc-testnet. 21 handlers and 40+ entities power every chart and feed on this site.
Live means running on arc-testnet right now. Ready means built and waiting on the backend.