Plans
Two ways to be inside the trust perimeter. One way to read it: free.
You pay to be attested, never to be checked. Whoever reads the verdict pays nothing, ever.
Free verification, first
The verdict on any attested endpoint, through the API, the SDK or the badge, is free for whoever asks. Not a trial and not a tier: the rule the rest of this page is built on.
Checking an attestation costs nothing for whoever runs the check.
Two tiers for sellers
Attested Vendor
For sellers with real commercial volume.
- Onboarding of the accountable operator: KYC/KYB verification at the issuer boundary, never at ZadQ.
- An attestation on your payTo address and resource URL, attached to your 402 responses.
- Re-verification on the published schedule; a lapse drops the status by itself.
- Up to three endpoints.
Entry fee and annual minimum on request.
Regulated / Compliance
For obliged entities, and the platforms that answer to a regulator.
- Everything in Attested Vendor, for up to ten endpoints.
- An evidence pack: issuer statements, re-verification evidence, the named accountable operator.
- A re-verification service level and a data-processing agreement.
- A named contact.
Entry fee and annual minimum on request.
You choose your tier in the seller dashboard once you are admitted, and set up billing there on the billing provider’s hosted page.
How the fee works
Each tier has an entry fee and an annual minimum. Above the minimum there is a usage component: a small fee per settlement received at an attested payTo address while the verdict on it read verified. It is metered on public on-chain transfers as daily aggregates per address, credited against the annual minimum, and billed only above it.
Nobody pays per check. Counterparties are never stored: the metering needs nothing beyond the public record, and you can reproduce it from a published rule.
The rule
Inside the trust perimeter nobody reveals who they are: each side presents proof that an accountable party stands behind it, and pays only for the work its own attestation covers.
The vendor pays for the payments its attestation covered. The agent pays, once agent attestation opens with v1, for the payments its own credential covered. The reader, whether buyer, marketplace or explorer, never pays.
Who this is not for
Below meaningful volume we are not the right answer, and we would rather say so here than in your invoice. A seller under the floor is still verifiable for free by anyone; it simply has nothing to buy here yet.
There is no starter tier today, and none is promised. Below the floor we qualify out honestly.
ZadQ is designed for API providers, businesses and agent fleets with meaningful transaction volume — roughly US$300 or more of annual activity per agent, or regulated businesses with accountability obligations. It is not aimed at individual micro-transactions.
Agent operators
The perimeter has a buying side too.
Agent attestation opens with v1 — you can register interest now.
Selling over x402? Let's find out if we fit.
We are onboarding our first partners: API sellers, publishers, marketplaces and regulated platforms.