Pay-per-call USDC APIs on Base vs flat monthly SaaS subscriptions. All prices below were pulled live from real 402 payment challenges on 2026-11-10 — no marketing numbers.
| Service | Endpoint | Price/call | 500 calls/mo |
|---|
Fleet total if you used every endpoint 500×/month: — less than one seat on most SaaS platforms.
Why pay-per-call wins for low and spiky volume: zero commitment, zero idle spend, settle in USDC on Base, and your agent pays autonomously — no API keys, no contracts, no seats. Prices are x402 exact scheme, network eip155:8453, payTo 0x9b8a…f72f. First call free on the law-lookup endpoint via charge-and-rebate.