03 / Trust the outcome
A miss is explicit and costs zero.
FetchSet’s planned billing invariant: an empty result must report tokens_charged: 0. Malformed input, invalid authentication, and rate limits return consistent 4xx errors instead.
03 / Trust the outcome
FetchSet’s planned billing invariant: an empty result must report tokens_charged: 0. Malformed input, invalid authentication, and rate limits return consistent 4xx errors instead.