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.
€400 entry fee · €1,500 a year, or €125 a month · three endpoints included; €300 a year (€25 a month) per further endpoint · VAT excluded
Regulated / Compliance
For obliged entities, and the platforms that answer to a regulator.
Evidence for your compliance — identity and accountability. A trust layer for the public perimeter.
- 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.
€1,500 entry fee · €9,000 a year, or €750 a month · ten endpoints included; €600 a year (€50 a month) per further endpoint · VAT excluded
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 a minimum, billed annually in advance or monthly in twelfths — your choice at checkout. Above the minimum there is a usage component: 0.75 % of each settlement received at an attested payTo address while the verdict on it read verified, capped at $0.40 per settlement. It is metered in USD on the public record, aggregated per calendar month and converted once to euros at the European Central Bank’s euro reference rate of the last business day of the metered month; the rate and the date are printed on the invoice line. Usage is credited against the minimum — the whole annual minimum on the annual cadence, the twelfths invoiced to date on the monthly one — and billed only above it. Amounts are in euros, VAT excluded.
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 operator pays for the payments its agents’ own credentials 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 serves agents and sellers with ≥ $300/yr economic volume plus regulated B2B counterparties. Micro-agents are out of segment.
Agent operators
The perimeter has a buying side too. An agent operator pays an entry fee when it enrols, as a person or an organisation, and a usage fee for the payments its agents’ own credentials covered. Its agents are never charged to be checked.
A person: €50 entry fee, credited against the first year’s minimum · €90 a year, or €7.50 a month, with one active agent included. An organisation: €400 entry fee, credited the same way · €150 a year, or €12.50 a month, with one active agent included. €60 a year (€5 a month) per further active agent; renewals are never charged. The same usage rule as vendors, on the payments your agents’ own credentials covered. VAT excluded.
Agent operators enrol on the seller dashboard. An agent that is not attested keeps paying every vendor that has not chosen to require attested agents: nothing blocks by default.
Selling over x402? Let's find out if we fit.
We are onboarding our first partners: API sellers, publishers, marketplaces and regulated platforms.