x402 'upto' metered-settlement fairness check: cap breach (settled>cap), over-charge / under-report vs the reported usage math (per_token/per_byte/per_second unit price), and a signed-authorization amount<=cap check. Deterministic signed verdict. $0.01.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.01 USDC | 0x8AfB...0Bc6 |