x402
Datasets
All datasets matching “x402”x402-bazaar-conformance
x402 Bazaar conformance census
3,520 distinct hosts, every one listed in a public x402 Bazaar
(Coinbase CDP or PayAI), probed 2026-09-05.
hosts
share
conform (402 + PAYMENT-REQUIRED + x402Version 2 + extensions.bazaar)
394
11.19%
answer 402 at all
1,536
43.64%
carry the PAYMENT-REQUIRED header
1,395
declare x402Version 2
538
carry the bazaar extension an indexer reads
413
do not respond at all
1,027
29.18%
Being listed is not the same as… See the full description on the dataset page: https://huggingface.co/datasets/csoai/x402-bazaar-conformance.pulsefeed-x402-security
PulseFeed — x402 Agent-Payment Security & Trust (open data)
Independent, daily-updated trust & safety data for the x402 agent-payment economy (HTTP 402 + stablecoins on Base) and the MCP server ecosystem — by PulseFeed.
AI agents increasingly pay for APIs autonomously over x402 and connect to MCP servers that can run code on install. But 20% of listed x402 endpoints are dead or invalid, and "live" is not the same claim as "payable": of 25264 endpoints that return a valid 402… See the full description on the dataset page: https://huggingface.co/datasets/Nikolife/pulsefeed-x402-security.x402-price-index
x402 Price Index — a census of the machine-payable web
Most directories of x402 services list what merchants claim. This dataset records
what their endpoints actually answer when probed: the HTTP 402 challenge they
return, the price inside it, the chain and asset they want, and whether they respond
at all.
It is built by Animica from an independent prober that walks
every x402 endpoint it can discover and reads each merchant's own accepts[] block.
No merchant self-reporting is… See the full description on the dataset page: https://huggingface.co/datasets/animicaorg/x402-price-index.x402-settlement-census
x402 settlement census — 2026-09-06
We paid 316 conformant x402 hosts as an ordinary buyer and recorded what came back.
Not a survey of what hosts advertise — a record of what they did when real USDC arrived.
outcome
hosts
share
REFUSED
213
67.4%
DELIVERED
100
31.6%
NO_CHALLENGE
2
0.6%
MISMATCH
1
0.3%
Two in three conformant hosts refused a correctly-signed payment. Being listed in a Bazaar index
and answering a valid 402 is not the same as taking money and… See the full description on the dataset page: https://huggingface.co/datasets/csoai/x402-settlement-census.x402-bazaar-census
x402 Bazaar Census
A dated, reproducible enumeration of the public x402 Bazaar discovery index — the catalogue
autonomous agents search to find services they can pay for over HTTP 402.
As far as we can establish, nobody has published a measurement of this index before.
As of 2026-09-04T15:48:58Z · content sha256 efc93ac5e76d506ecd6778cf4d323138…
What the index looks like
resources fetched
28,136
resources the index reports
28,136
coverage
100.0%… See the full description on the dataset page: https://huggingface.co/datasets/csoai/x402-bazaar-census.x402-endpoint-readinessscvd.store x402 endpoint readiness corpus
scvd.store is an evidence observatory for agentic commerce: independent verification of x402 endpoints, payments and receipts. Before an agent pays an x402 endpoint, we check that it can be paid. After it pays, we check the signed receipt. Over time we watch endpoints and publish a dated, signed corpus. Sellers use it to prove a door works; buyers use it before spending. Every artifact is signed, expires, and names what we did not see. Not escrow, not… See the full description on the dataset page: https://huggingface.co/datasets/keeper-scvd/x402-endpoint-readiness.