instrument 02 · sellers advertising paid resources over x402

Who actually sells?

live3,055 sellers · 2,153 hosts · swept 2026-10-08

A registration says an agent exists. It says nothing about whether anybody is selling anything, or whether a single payment has ever been made. This instrument asks the sellers directly. x402 is the protocol an endpoint uses to answer “this costs money, here is where to pay”; the census enumerates the endpoints that advertise it and checks what happens when you ask.

What counts as a seller

the unit

One seller is one payment address behind one host. The same address behind two hosts is two sellers; one host quoting two addresses is two sellers. A seller that rotates its address becomes a new seller, deliberately — the rotation is information, and blending it away would hide it.

Sellers are enumerated from named catalogs, because every catalog is partial and nobody publishes the union. Which catalogs are read is part of the method: adding or removing one changes the population and is a changelog event, never a quiet edit. So this measures the advertised economy, and says so.

What gets asked

not a strict ladder

Seven rungs, each naming its own prerequisites rather than depending on the one below — unlike the registration census’s seven checks. Two of them have never been asked of a real seller, and say so here rather than in a footnote.

Listedswept

Which catalogs advertise this seller, and since when?

The population is the listed, so this rung is evidence rather than a verdict.

Every catalog is partial and nobody publishes the union, so this is the advertised economy, not the whole of it.

3,055 of 3,055 judged

100.0%

internal: listed

Reachableswept

Does the host answer at all?

Any HTTP response counts as a pass, including a 4xx or 5xx: the question is existence, not health.

2,820 of 2,820 judged

100.0%

excluded: 3 error, 232 refused

internal: reachable

Quotesswept

Asked for the resource, does it name a price it can be paid at?

A spec-valid 402 naming a scheme, network, amount, asset and this seller's own payment address, judged against a pinned x402 spec commit.

A 402 here is the seller working, not refusing — it is the protocol stating what something costs.

1,082 of 2,820 judged

38.4%

excluded: 235 skipped

internal: quotes

Deliversnot yet run

Paid for real, does the resource actually arrive?

The only rung that spends money, under rules published before the first purchase: a capped amount, one purchase per seller per sweep, from a wallet named in advance.

Never attempted. No figure on this site describes anything bought, delivered or undelivered.

never attempted — no rate

internal: delivers

Receiptedreserved

Designed against the x402 offers-and-receipts extension, and held out of the locked method until that extension stabilises. It enters by changelog.

internal: receipted

Settledswept

Has this payment address ever actually been paid?

On-chain settlement history at a pinned block — first and last settlement, how many, and from how many distinct payers.

Scoped to a stated block window on one chain, so a fail means "nothing in that window", never "never paid". Distinct payers is the load-bearing figure, not the count.

2,261 of 2,377 judged

95.1%

excluded: 678 unprobed

internal: settled

Consistentswept

Does the endpoint quote what the catalog advertised?

Price, description and schema compared field by field against each catalog that lists it; a disagreement between two catalogs is itself evidence.

781 of 849 judged

92.0%

excluded: 1,973 skipped, 233 unprobed

internal: consistent

What this will not measure

stated in advance

Not measured, on purpose: revenue, dollar volume, uptime, latency, and the quality of anything delivered. No score, no rank, no badge. Nothing publishable is purchasable.

Politeness is part of the method rather than a setting: robots.txt binds every request this instrument makes, including the payment handshake, with no carve-out for “the protocol’s designed use”. A host that disallows us is recorded as having refused, and that is never counted as a failure of the seller.

Provenance

reproducible

Every figure above comes from one sweep, named here in full. A result you cannot recompute is an opinion.

run: 80bbcee3-73be-48c6-a833-4cdce69eb6ae
catalogs read: bazaar
rungs attempted: 1, 2, 3, 6, 7
settlement scanned on: eip155:8453
checker: 0.1.0
commit: 10238dd9af44dfa032e6578390569a413a6bb393
started: 2026-10-08T06:00:06.780929Z
finished: 2026-10-08T06:10:11.182750Z
advertised resources: 33,516 distinct URLs (43,693 seller-resource pairs)

Rung 4 is absent from the attempted list, and that is the whole claim: no purchase has ever been made, so no figure here describes anything bought or delivered.