x402 Virtual Card Skill Create one-time-use virtual debit cards (Visa/Mastercard) for agents using USDT on BSC via the x402 HTTP payment protocol. ⚡ Gas Model : BSC USDT does not support EIP-3009. The client must perform a one-time authorization (on-chain tx) before card creation; the actual USDT transfer is executed by the server. - Create card (x402) : Check allowance → if insufficient and no BNB, auto-transfer 0.0003 BNB via WalletConnect for approve gas → if USDT insufficient, auto-transfer USDT → EIP-712 signature (gasless) → server submits transfer (server pays gas) - Top up (topup) : S…