x402 merchant
API-existence Oracle: package$0.002 / callattester.dev
OraclePackagesHallucination-checkx402Agents

Deterministic package existence for PyPI and npm, built from real published artifacts (never LLM guesses). Negative answers and typosquat-adjacency flags carry signed proof. $0.002 USDC per check.

MerchantReport

0x5740…67dd

0x57407d691f755caa107647718f3582a8a87467ddExplorer
Inbound volume
$2.04↑ 5000%
Last 7d vs prior 7d
Settlements
37↑ 100%
Last 7d vs prior 7d
7
Distinct counterparties

Chains: Base (37)

Funds flow over time

Activity

MarAprMayJunJulAug
LessMore

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

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x93a8…eb4c$0.00$1.872930d agoGraph
0x1ded…0649$0.00$0.1014d agoGraph
0x72f6…04c4$0.00$0.06321d agoGraph
0xfe2d…0557$0.00$0.005135d agoGraph
0xc533…2d7a$0.00$0.00211d agoGraph
0xf843…4930$0.00$0.00218d agoGraph
0xbc68…920a$0.00$0.002136d agoGraph

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

Data quality

92% of observed volume is with a single counterparty.

Organic volume $2.04 of $2.04 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0xc533…2d7a0x5740…67ddBase$0.002100%coinbase1d ago0xa30651…14f78c
0x1ded…06490x5740…67ddBase$0.10100%coinbase4d ago0x1c2589…149f16
0xf843…49300x5740…67ddBase$0.002100%Route unknown8d ago0x791b51…fac5b7
0x72f6…04c40x5740…67ddBase$0.05100%Route unknown21d ago0xd2ede4…2d562f
0x72f6…04c40x5740…67ddBase$0.005100%Route unknown21d ago0x8fc9aa…94d4ad
0x72f6…04c40x5740…67ddBase$0.002100%Route unknown21d ago0x9dfbdd…9f2309
0x93a8…eb4c0x5740…67ddBase$0.10100%Route unknown30d ago0xac05c2…69821f
0x93a8…eb4c0x5740…67ddBase$0.10100%Route unknown30d ago0x5461f6…39ec65
0x93a8…eb4c0x5740…67ddBase$0.15100%Route unknown30d ago0x6df531…d28310
0x93a8…eb4c0x5740…67ddBase$0.005100%Route unknown30d ago0x23f7fc…0b9509
0x93a8…eb4c0x5740…67ddBase$0.05100%Route unknown30d ago0xccdafc…90f99d
0x93a8…eb4c0x5740…67ddBase$0.01100%Route unknown30d ago0x91a88b…8e57dc
0x93a8…eb4c0x5740…67ddBase$0.05100%Route unknown30d ago0x9f3d43…fea148
0x93a8…eb4c0x5740…67ddBase$0.005100%Route unknown30d ago0x8657ee…53e23b
0x93a8…eb4c0x5740…67ddBase$0.10100%Route unknown30d ago0xbb79e9…2cc3b3
0x93a8…eb4c0x5740…67ddBase$0.10100%Route unknown30d ago0x32b479…61adbe
0x93a8…eb4c0x5740…67ddBase$0.15100%Route unknown30d ago0x58ba61…01f3fa
0x93a8…eb4c0x5740…67ddBase$0.02100%Route unknown30d ago0xcc5de4…ca0769
0x93a8…eb4c0x5740…67ddBase$0.01100%Route unknown30d ago0x5221e9…6cff9e
0x93a8…eb4c0x5740…67ddBase$0.005100%Route unknown30d ago0xe9643c…6e2b4a
0x93a8…eb4c0x5740…67ddBase$0.002100%Route unknown30d ago0x248733…82af80
0x93a8…eb4c0x5740…67ddBase$0.05100%Route unknown34d ago0xecdef8…600d1e
0x93a8…eb4c0x5740…67ddBase$0.01100%Route unknown34d ago0xc7e2ea…bbba66
0xfe2d…05570x5740…67ddBase$0.005100%Route unknown35d ago0xb28977…8bd7c3
0xbc68…920a0x5740…67ddBase$0.002100%Route unknown36d ago0x1166bc…d89533

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0x5740…67dd's payment record before paying it over the free read API. No key, no account.

GET www.roundhouse.studio/api/v0/merchants/0x57407d691f755caa107647718f3582a8a87467dd

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: 0x57407d691f755caa107647718f3582a8a87467dd

curl -s 'https://www.roundhouse.studio/api/v0/merchants/0x57407d691f755caa107647718f3582a8a87467dd'
curl -s 'https://www.roundhouse.studio/api/v0/entities/0x57407d691f755caa107647718f3582a8a87467dd/settlements?limit=50'

If you do not have Roundhouse tools or skills installed, read
https://www.roundhouse.studio/skill.md first — it is the whole procedure, and it needs no key.