x402 merchant
402Signal$0.003 / call402signal.com ↗
x402Pre-payment checkPayment verificationPrice and recipient checkPaid api

Check a paid API before your agent pays. 402Signal compares the seller's current price, recipient, network and exact request with your budget and rules; for a qualifying offer it returns a signed decision to verify before your own wallet pays. Its open-source client checks the answer against requirements set before paying. $0.003 USDC on Base, Solana or Algorand, only for a qualifying offer; misses are free. Your agent keeps its wallet. No guarantee of accuracy, identity, delivery or refunds.

MerchantReport

402Signal

0xa2604ae688228af8349363770351bfcec66d4fa0Explorer
Received
$0.33
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
106
Last 7d vs prior 7d
4
Distinct counterparties
Over the whole indexed history

Received $0.33 of the $3063.55M Roundhouse has indexed across 1,399,142 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (106)

Funds flow over time

Activity

MayJunJulAugSepOctNov
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$0.319940d agoGraph
0x1a34…51d0$0.00$0.02556d agoGraph
0x4c29…9494$0.00$0.003139d agoGraph
0x5015…4121$0.00$0.003150d agoGraph

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

Data quality

94% of observed volume is with a single counterparty, in all 106 observed settlements.

Organic volume $0.33 of $0.33 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x3722…c522402SignalBaseBase$0.003100%coinbase46d ago0x2b4c0b…07665c
0x3722…c522402SignalBaseBase$0.003100%coinbase46d ago0x466772…d13d40
0x3722…c522402SignalBaseBase$0.003100%coinbase46d ago0x09c5e9…61554d
0x3722…c522402SignalBaseBase$0.003100%coinbase46d ago0x3fef2e…6fe318
0x3722…c522402SignalBaseBase$0.003100%coinbase46d ago0x90c9b4…a4f52d
0x3722…c522402SignalBaseBase$0.003100%coinbase46d ago0xe7ae07…3c7ba9
0x3722…c522402SignalBaseBase$0.003100%coinbase46d ago0x84a93f…f55a98
0x3722…c522402SignalBaseBase$0.003100%coinbase47d ago0xe64c22…464065
0x3722…c522402SignalBaseBase$0.003100%coinbase47d ago0x0945e1…95d941
0x3722…c522402SignalBaseBase$0.003100%coinbase47d ago0xb4281d…a37216
0x3722…c522402SignalBaseBase$0.003100%coinbase47d ago0x29644a…d4643f
0x3722…c522402SignalBaseBase$0.003100%coinbase47d ago0x87ecc8…7b55cb
0x3722…c522402SignalBaseBase$0.003100%coinbase47d ago0x40c743…6c010c
0x3722…c522402SignalBaseBase$0.003100%coinbase47d ago0xd656c9…3ffb59
0x3722…c522402SignalBaseBase$0.003100%coinbase48d ago0xf5af29…7b98e2
0x3722…c522402SignalBaseBase$0.003100%coinbase48d ago0x3a5cac…228f46
0x3722…c522402SignalBaseBase$0.003100%coinbase48d ago0xaeead8…608982
0x3722…c522402SignalBaseBase$0.003100%coinbase48d ago0xe3fd09…58e3da
0x3722…c522402SignalBaseBase$0.003100%coinbase48d ago0xb45ca6…055488
0x3722…c522402SignalBaseBase$0.003100%coinbase49d ago0xe0a5b1…5e9366
0x3722…c522402SignalBaseBase$0.003100%coinbase49d ago0x336f59…612916
0x3722…c522402SignalBaseBase$0.003100%coinbase49d ago0x5646be…19eeb6
0x3722…c522402SignalBaseBase$0.003100%coinbase49d ago0x5fb489…2d1d48
0x3722…c522402SignalBaseBase$0.003100%coinbase49d ago0xba5971…d4569d
0x3722…c522402SignalBaseBase$0.003100%coinbase49d ago0x672a0c…bd6fd8

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 402Signal's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xa2604ae688228af8349363770351bfcec66d4fa0

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: 0xa2604ae688228af8349363770351bfcec66d4fa0

curl -s 'https://api.roundhouseai.io/v0/merchants/0xa2604ae688228af8349363770351bfcec66d4fa0'
curl -s 'https://api.roundhouseai.io/v0/entities/0xa2604ae688228af8349363770351bfcec66d4fa0/settlements?limit=50'

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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