# Paid-call checkout conformance probe (TextForAgents LLC)
> Directories check a paid tool's quote, never its checkout — this probe pays your endpoint the way a stranger would, with the official clients, and signs a verdict that the challenge is legible, the price matches in every dialect, and a real purchase settles and delivers.
Prices: verdict lookup $0.01/query; fresh settled probe $0.05 + endpoint call price pass-through (disclosed, capped); monitoring $0.99/endpoint/mo; operator $9.99/mo up to 20 endpoints; fleet $19.99/mo up to 79 endpoints (biweekly settled).
Trial: one free fresh settled probe per operator, ever.
Stated plainly: the lab evidence is fixture evidence (19/19) — the live-endpoint catch rate is unmeasured; a passing verdict proves one official-client-shaped purchase settled and delivered at probe time, not that every client version will pay; willingness to pay for settled monitoring is unmeasured; on the settled leg the endpoint's own call price is a disclosed pass-through, stated before the run and bounded by a cap you set.
Docs: https://textforagents.com/products/paid-call-checkout-conformance-probe/docs — Support: support@textforagents.com