Pay Instant Cert — $0.05 USDC

Same pattern top x402 teams ship: connect wallet → check USDC → gasless EIP-3009 approve → settle on Base → receipt. No card. No account. Agents use the same Exact path via MCP.

1 Connect 2 Balance 3 Sign 4 Receipt

Wallet: not connected

Balance: —

Network: Base · USDC

Advanced — customize schema / SQL (optional)

Schema snapshot (DDL) SQL to authorize

Ready. One click pays Exact USDC on Base.

Agents: BUY.md / MCP sqlguard_cert. Hitting paid APIs in a browser also gets Coinbase’s official x402 paywall UI.