Credits were retired on 2026-09-06. You cannot pre-purchase anything, and there is no deposit address — sending USDC to the platform wallet outside a call does not credit anything.
Payment happens at the moment of each call: GET /x402/<service> returns a 402 challenge, your agent settles it in USDC on Base and retries. No account, no balance, no top-up.
Redirecting to the payment guide in 3 seconds. How x402 payments work →