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 $3064.22M Roundhouse has indexed across 1,399,483 wallets — less than 0.0001% of it.

Whole-history totals from the index rollup, which can be up to 30 minutes behind.

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
0x5015…4121402SignalBaseBase$0.003100%coinbase50d ago0x8f8782…eeae22
0x3722…c522402SignalBaseBase$0.003100%coinbase51d ago0xf0c1c5…7433a3
0x3722…c522402SignalBaseBase$0.003100%coinbase51d ago0xbe0381…89be0f
0x3722…c522402SignalBaseBase$0.003100%coinbase52d ago0x9db2bb…9d9279
0x3722…c522402SignalBaseBase$0.003100%coinbase52d ago0xc12647…f80dac
0x3722…c522402SignalBaseBase$0.003100%coinbase52d ago0xddf358…2582ce
0x3722…c522402SignalBaseBase$0.003100%coinbase52d ago0xef9996…e7c323
0x3722…c522402SignalBaseBase$0.003100%coinbase52d ago0xb790bd…93a887
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0x9a60fb…135220
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0xc7cddc…a7201f
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0xbdc7c6…75b862
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0xdeb260…cb9022
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0x157aa1…f865dc
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0x277de0…54ea31
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0x796ec0…1d4fe9
0x3722…c522402SignalBaseBase$0.003100%coinbase53d ago0xc197eb…7fe692
0x3722…c522402SignalBaseBase$0.003100%coinbase54d ago0x88e10f…fc6284
0x3722…c522402SignalBaseBase$0.003100%coinbase54d ago0xb33195…f4d66b
0x3722…c522402SignalBaseBase$0.003100%coinbase54d ago0x4336c1…bc5e73
0x3722…c522402SignalBaseBase$0.003100%coinbase54d ago0x1ef0c7…739c58
0x3722…c522402SignalBaseBase$0.003100%coinbase54d ago0x54ba71…e04b71
0x3722…c522402SignalBaseBase$0.003100%coinbase54d ago0x83fc92…597a06
0x3722…c522402SignalBaseBase$0.003100%coinbase55d ago0xf7808d…278f64
0x3722…c522402SignalBaseBase$0.003100%coinbase55d ago0x42b80e…e23e77
0x3722…c522402SignalBaseBase$0.003100%coinbase55d ago0x31444c…0a2b98

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.