x402 vs API key
ABR, ASIC, and most AU data vendors still want an account and a key. Agents do not want that. x402 returns HTTP 402 with a price; the wallet pays; the body comes back. No key to leak, rotate, or provision.
| API key | x402 (Milypay) | |
|---|---|---|
| Signup | Yes | No |
| Billing | Monthly / prepaid | Per call, AUD stables |
| Agent loop | Store a secret | Settle 402, retry |
| Demo | Often none | milypay.xyz/api/… free, throttled |