GotSOL.app

x402 payments on Solana

x402 is a way for an agent to pay for an HTTP request. GotSOL.app uses it for an exact USDC payment on Solana. The incoming payment is 0%.

  1. Request the payment URL with no payment header. The response is HTTP 402.
  2. The body and the PAYMENT-REQUIRED header name the network (Solana mainnet), the asset (USDC), the recipient wallet, and the amount in atomic units.
  3. The paying wallet builds one TransferChecked for that amount, adds a memo of gotsol.app and the link id, and signs the transaction. That wallet pays the Solana network fee.
  4. Retry the same URL with PAYMENT-SIGNATURE. Settlement returns a receipt.

A person can pay the same request by scanning the Solana Pay QR. Merchant checkouts live on GotSOLpay, not on this page. See the agent docs.