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 $3061.41M Roundhouse has indexed across 1,398,509 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$0.02555d agoGraph
0x4c29…9494$0.00$0.003139d agoGraph
0x5015…4121$0.00$0.003149d 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
0x4c29…9494402SignalBaseBase$0.003100%coinbase39d ago0x09ebb0…3abb27
0x3722…c522402SignalBaseBase$0.003100%coinbase40d ago0x17e910…04acc1
0x3722…c522402SignalBaseBase$0.003100%coinbase40d ago0x644528…c99bab
0x3722…c522402SignalBaseBase$0.003100%coinbase40d ago0xb63831…c41692
0x3722…c522402SignalBaseBase$0.003100%coinbase40d ago0x829f2a…9c0ab2
0x3722…c522402SignalBaseBase$0.003100%coinbase40d ago0xb09166…e084e2
0x3722…c522402SignalBaseBase$0.003100%coinbase40d ago0x46c43c…40b269
0x3722…c522402SignalBaseBase$0.003100%coinbase40d ago0xb4add1…2fe5e3
0x3722…c522402SignalBaseBase$0.003100%coinbase41d ago0xf111c9…af6eac
0x3722…c522402SignalBaseBase$0.003100%coinbase41d ago0x1beda9…4b954e
0x3722…c522402SignalBaseBase$0.003100%coinbase41d ago0x15222a…62d832
0x3722…c522402SignalBaseBase$0.003100%coinbase41d ago0x6df87c…824ffb
0x3722…c522402SignalBaseBase$0.003100%coinbase41d ago0x86d069…8d4c5d
0x3722…c522402SignalBaseBase$0.003100%coinbase42d ago0x0ebd0e…7ae681
0x3722…c522402SignalBaseBase$0.003100%coinbase42d ago0xb47ac7…198a77
0x3722…c522402SignalBaseBase$0.003100%coinbase42d ago0x86bfed…2d794d
0x3722…c522402SignalBaseBase$0.003100%coinbase42d ago0x1fef33…98dd29
0x3722…c522402SignalBaseBase$0.003100%coinbase42d ago0xd971ff…d1ed9b
0x3722…c522402SignalBaseBase$0.003100%coinbase45d ago0x220ea6…c4842b
0x3722…c522402SignalBaseBase$0.003100%coinbase45d ago0xf690d5…9292a2
0x3722…c522402SignalBaseBase$0.003100%coinbase45d ago0x3aec1a…e01324
0x3722…c522402SignalBaseBase$0.003100%coinbase45d ago0xf3be44…f372e0
0x3722…c522402SignalBaseBase$0.003100%coinbase45d ago0x0002a4…b85022
0x3722…c522402SignalBaseBase$0.003100%coinbase45d ago0x815274…d05a42
0x3722…c522402SignalBaseBase$0.003100%coinbase45d ago0x535be0…6ab8b6

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.