Verification by the call
Elara's post-quantum verifier also runs as a paid HTTP endpoint on the x402 rail. An agent posts a record; the first answer is a 402 carrying the price in a machine readable header; the agent's wallet pays it and repeats the request; the second answer carries the verdict and an Ed25519 attestation signed over the input hash, the verdict, and the transaction id of that very payment. No account, no key exchange, no invoice, no human in the loop.
Free first
The verdict itself is free and always will be. cargo install elara-verify gives you the same Rust verifier, offline, with no payment and no network call. What money buys is the attestation and the existed_by time: evidence a third party can check later, bound to a payment only you could have made. It is not a different or better verdict. If that binding is not what you need, do not buy it.
The listing, read live
This page does not contain the endpoint's address. It reads it, in your browser, from the same public discovery catalog an agent would use to find it, and prints whatever that catalog says at the moment you load the page. If the listing lapsed or changed, you would see that here instead of a confident copy of something that used to be true.
Reading the catalog...
What a declined call costs
Nothing. Any response of 400 or above cancels settlement before it clears, so a body this tier declines costs you zero: over the size cap, too many carriers, or a SPHINCS+ dual signature record it will not pretend to check. That is enforced by a test in the endpoint's own suite, and the suite is in the repository, so the claim is checkable rather than promised.
Honest status
The settle count above is the facilitator's own number for this route, not ours, and it is small: the endpoint is new, and the first paid call against it was our own, made to prove the path end to end. A second route on the same service checks mandate bundle authority at a higher price and is deliberately absent from the catalog: getting a route listed there takes a settled payment, and paying ourselves again to advertise ourselves is not a number worth having.