Free trials
Some sellers enable a free trial on an endpoint: a new wallet’s first calls are free, once per wallet, so you can verify an endpoint does what you need before paying anything.
How it works as a buyer
Section titled “How it works as a buyer”Nothing special: request the endpoint and follow the normal
payment flow — you’ll get the standard 402 and sign the
per-call payment as usual. If the endpoint offers a trial your wallet hasn’t used, that
signed payment is used to identify your wallet, not to charge it: the call serves
from the trial grant, nothing settles on-chain, and the response carries a session token
(x-superspice-access) that draws the rest of your free calls with no further
signatures. When the grant is exhausted, calls are simply paid ones again —
pay-per-call or prepaid credit.
- Once per wallet. A wallet that has used its trial on an endpoint doesn’t get another on the same endpoint.
- Seller-controlled. The seller decides whether a trial exists and how many calls it covers; plenty of endpoints have none.
- Real responses. Trial calls hit the seller’s real origin — what you evaluate is what you’ll pay for.
Why sellers turn it on
Section titled “Why sellers turn it on”Agents (and the people operating them) reasonably want to test before funding a wallet against an unknown API. A trial answers that with zero friction while keeping the paid terms unchanged — and Superspice enforces the once-per-wallet rule so “free trial” doesn’t quietly become “free forever”.