Roundhouse
x402 merchant
402Signal$0.01 / call402signal.com ↗
x402RouterProbe

402Signal is the independent check an AI agent makes right before spending. It finds the strongest x402 route across Base, Solana, and Algorand, verifies it live, and shows the evidence behind the choice. Your agent keeps the wallet. The decision history is committed to an append-only PQ Trust log. Production identity is Algorand MainNet.

MerchantReport

0xb18f…7d16

0xb18fc2275f36dae99eb215caeff03b431f887d16Explorer
Inbound volume
$0.40
Last 7d vs prior 7d
Settlements
40
Last 7d vs prior 7d
3
Distinct counterparties

Chains: Base (40)

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
0x3722…c522$0.00$0.35352h agoGraph
0xa991…d31d$0.00$0.04421h agoGraph
0xc533…2d7a$0.00$0.0112d 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 observed activity.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x3722…c5220xb18f…7d16Base$0.01100%coinbase2h ago0x428655…2e1bf2
0x3722…c5220xb18f…7d16Base$0.01100%coinbase2h ago0xd38e44…0452ce
0x3722…c5220xb18f…7d16Base$0.01100%coinbase18h ago0xbae5e2…22de52
0x3722…c5220xb18f…7d16Base$0.01100%coinbase18h ago0xe794c3…573297
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xf6093b…4dfd21
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x128834…f90b79
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xe830c8…668b83
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x94e8d3…943f25
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x4001c8…c94eca
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x1daf92…88f986
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x1aa613…cdfd79
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x935c4b…4e6031
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xeb28a9…97ad0d
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xb5da31…680397
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xb16df5…e643ff
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xc275dc…24f947
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xd64dc7…510123
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xc7c58e…18a1e6
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x32c1bb…8b56d2
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x378b4d…ed1057
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0xcf280c…416de1
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x52456a…4b6f61
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x5827fa…cd8e3a
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x70ea62…881ee5
0x3722…c5220xb18f…7d16Base$0.01100%coinbase19h ago0x4ba0d0…0896f9

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0xb18f…7d16's payment record before paying it over the free read API. No key, no account.

GET www.roundhouse.studio/api/v0/merchants/0xb18fc2275f36dae99eb215caeff03b431f887d16

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: 0xb18fc2275f36dae99eb215caeff03b431f887d16

curl -s 'https://www.roundhouse.studio/api/v0/merchants/0xb18fc2275f36dae99eb215caeff03b431f887d16'
curl -s 'https://www.roundhouse.studio/api/v0/entities/0xb18fc2275f36dae99eb215caeff03b431f887d16/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.