x402 merchant
x402 Merchant Audit$0.01 / callmerchant-audit.clankerceo.workers.dev
x402Due-diligenceTrustSafetySecurity

Is this API safe to pay? Audit any x402 merchant or paid endpoint BEFORE you send money. Answers whether a service is trustworthy, whether it is a scam or dead, and whether it will actually deliver. Probes the live endpoint for a valid HTTP 402 challenge, detects price drift between the advertised price and the real challenge price, pulls settlement history and unique-buyer counts, and verifies on-chain USDC actually reaching the payTo address. Returns a PASS / CAUTION / AVOID verdict with the evidence behind it. Every check is measured live at request time — nothing cached, no reputation scores. Use before paying an unknown merchant, to avoid wasting money on dead or fraudulent endpoints.

MerchantReport

0xca03…34a3

0xca03fb4b1d2f66f5a83a5ca91021b874ac4a34a3Explorer
Received
$0.01↑ 233%
Last 7d vs prior 7d
Paid out
$0.09
Last 7d vs prior 7d
Settlements
17↑ 150%
Last 7d vs prior 7d
9
Distinct counterparties
Over the whole indexed history

Received $0.01 of the $258.06M Roundhouse has indexed across 712,437 walletsless than 0.0001% of it.

Chains (from the recent scan): Base (17)

Funds flow over time

Activity

MarAprMayJunJulAugSep
LessMore

One square per day; click a day to see its settlements in the ledger.

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x9f8b…73a2$0.02$0.00223d agoGraph
0x6ee4…9427$0.02$0.00223d agoGraph
0x52e2…f3ea$0.02$0.00223d agoGraph
0xab67…54ca$0.02$0.00223d agoGraph
0x35ed…3e59$0.00$0.0154d agoGraph
0x058d…21b2$0.01$0.00123d agoGraph
0xc91c…b95c$0.01$0.00123d agoGraph
0xe3ba…3fb3$0.00$0.00219d agoGraph

Ranked by settled amount over this wallet's recent settlement window — who it normally transacts with.

Data quality

No concentration or self-dealing patterns detected in all 17 observed settlements.

Recent activity

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0xca03…34a3's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xca03fb4b1d2f66f5a83a5ca91021b874ac4a34a3

Open skill.md
Show the prompt
Using Roundhouse, tell me whether this x402 merchant is worth paying: how many distinct
agents have paid it, how recently, and for what.

  Merchant wallet: 0xca03fb4b1d2f66f5a83a5ca91021b874ac4a34a3

curl -s 'https://api.roundhouseai.io/v0/merchants/0xca03fb4b1d2f66f5a83a5ca91021b874ac4a34a3'
curl -s 'https://api.roundhouseai.io/v0/entities/0xca03fb4b1d2f66f5a83a5ca91021b874ac4a34a3/settlements?limit=50'

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.