x402 merchant
x402-gateway$0.001 / callx402.freeq.one
McpPay-per-callVerify_semaphore

x402-gateway tool: verify_semaphore — Verify a Semaphore ZK proof locally using Groth16 (embedded official vkey). No external dependency. Send the proof object from @semaphore-protocol/proof generateProof().

MerchantReport

0x90b0…8d84

0x90b0dc893406d6ea63bb077ed59f5e8340f98d84Explorer
Inbound volume
$20.31↑ 10322%
Last 7d vs prior 7d
Settlements
105↓ 61%
Last 7d vs prior 7d
4
Distinct counterparties

Chains: Base (111)

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
0xc311…bdef$0.00$20.311032h agoGraph
0xe903…1abf$0.01$0.0063d agoGraph
0x2a07…7bae$0.00$0.00215d agoGraph
0x7e6b…2b1c$0.00$0.00118d agoGraph

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

Data quality

100% of observed volume is with a single counterparty.

Organic volume $20.32 of $20.32 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0xc311…bdef0x90b0…8d84Base$5.02100%coinbase2h ago0xecb771…db2a06
0xc311…bdef0x90b0…8d84Base$5.02100%coinbase7h ago0x290f8a…aaeb38
0xc311…bdef0x90b0…8d84Base$5.02100%coinbase7h ago0xe73bfd…8610cf
0xc311…bdef0x90b0…8d84Base$5.02100%coinbase8h ago0xb0619b…6b8bb0
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase3d ago0xc1fec8…5badf4
0x90b0…8d840xe903…1abfBase$0.002100%coinbase3d ago0xd8d97a…7709b9
0x90b0…8d840xe903…1abfBase$0.002100%coinbase3d ago0xf59ba4…bc32df
0x90b0…8d840xe903…1abfBase$0.002100%coinbase3d ago0x5d68c0…61c1e9
0x90b0…8d840xe903…1abfBase$0.003059100%coinbase3d ago0xfc65ad…3accc2
0x90b0…8d840xe903…1abfBase$0.002100%coinbase4d ago0xca9d02…54052f
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase4d ago0x89e5bf…773e7c
0x90b0…8d840xe903…1abfBase$0.002100%coinbase4d ago0x88b8ad…00f843
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase4d ago0xb38876…f2532a
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase4d ago0x9469f0…7f994d
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase4d ago0xdfc6fd…48ba5e
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase4d ago0x1c6681…ee7588
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase4d ago0x629adc…b86a07
0xc311…bdef0x90b0…8d84Base$0.002100%coinbase4d ago0xd6e446…14b3d0
0x2a07…7bae0x90b0…8d84Base$0.002100%coinbase5d ago0xdf39af…df22d0
0xc311…bdef0x90b0…8d84Base$0.001100%coinbase5d ago0xee12d7…964990
0xc311…bdef0x90b0…8d84Base$0.001100%coinbase5d ago0xe9a75c…d4a3e9
0xc311…bdef0x90b0…8d84Base$0.001100%coinbase5d ago0x24bed1…b4657c
0xc311…bdef0x90b0…8d84Base$0.001100%coinbase5d ago0x40fca0…693bf7
0xc311…bdef0x90b0…8d84Base$0.001100%coinbase5d ago0x63f279…44b760
0xc311…bdef0x90b0…8d84Base$0.001100%coinbase5d ago0xe8db6a…1a33e1

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0x90b0…8d84's payment record before paying it over the free read API. No key, no account.

GET www.roundhouse.studio/api/v0/merchants/0x90b0dc893406d6ea63bb077ed59f5e8340f98d84

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: 0x90b0dc893406d6ea63bb077ed59f5e8340f98d84

curl -s 'https://www.roundhouse.studio/api/v0/merchants/0x90b0dc893406d6ea63bb077ed59f5e8340f98d84'
curl -s 'https://www.roundhouse.studio/api/v0/entities/0x90b0dc893406d6ea63bb077ed59f5e8340f98d84/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.