DocsPay with PayX
Live on Arc mainnet · chain 5042
Pay with PayX
PayX lets anyone pay any X account in USDC on Arc mainnet. Payments wait in an onchain escrow under the handle until the creator signs in with X and claims them. No wallet is needed to receive.
What is PayX?
PayX is a payment protocol on Arc, Circle's stablecoin-native chain. A payer calls a PayXTipping v2 contract with a handle, an amount and an optional message. The tokens are escrowed under the lowercase handle. There is one contract per supported asset (currently USDC), each with its own balances and claims. The creator proves ownership of that handle with X OAuth; our oracle then issues an EIP-712 authorization the contract verifies before paying out to the wallet they choose.
Native USDCPayments move Circle's USDC on Arc (6-decimal ERC-20 interface at 0x3600…0000). Gas is paid in USDC too.
Sub-second finalityArc confirms in well under a second. A payment is in escrow before the wallet closes.
Key features
Pay from the webEnter any X username on the Pay page, pick an amount from 0.1 USDC, add a message and confirm in your wallet.No wallet needed to receiveRecipients don't need a wallet to get paid. They sign in with X to prove ownership and claim to any wallet later.Chrome extensionAdds a Pay button under every post on x.com. Everything it does is available from the web while the store listing is updated.Open, hardened smart contractPayXTipping v2: EIP-712 claims, pausable, Ownable2Step owned by a 2-of-3 Safe, and no owner path to user escrow.
How it works
- Enter a handleOn the web Pay page or via the extension.
- Send USDCApprove, then pay; 1% fee.
- Held in escrowUnder the lowercase handle, onchain.
- Creator claimsSign in with X, withdraw to any wallet.
Protocol parameters
<1s
Finality
1%
Platform fee (100 bps)
~$0.01
Gas per tx (USDC)
0.1 USDC
Minimum payment
Get started
Ready to send or receive? The quick start covers both sides in a couple of minutes.