x402 merchant
Spark Invocation Assurance$0.001 / callspark-api-preflight.replit.app ↗
PreflightValidationx402ApiAgents

Validate an intended paid API request against its declared contract before spending. Returns VALID, INVALID, or UNKNOWN with machine-readable reasons. Target URL is never called.

MerchantReport

0xc2a3…2b91

0xc2a3246d70733169b5228caaea799afe138c2b91Explorer
Received
$0.004
Last 7d vs prior 7d
Paid out
$2.00
Last 7d vs prior 7d
Settlements
5
Last 7d vs prior 7d
5
Distinct counterparties
Over the whole indexed history

Received $0.004 of the $3105.03M Roundhouse has indexed across 1,405,088 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (5)

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
0xa733…a1d6$2.00$0.00147d agoGraph
0x7722…5e4a$0.00$0.001115d agoGraph
0xa1d1…1978$0.00$0.001127d agoGraph
0x6a0b…4518$0.00$0.001133d agoGraph
0xedd8…e30e$0.00$0.001146d 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, in all 5 observed settlements.

Organic volume $2.00 of $2.00 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x7722…5e4a0xc2a3…2b91BaseBase$0.001100%payAI15d ago0x8648cd…11d2c4
0xa1d1…19780xc2a3…2b91BaseBase$0.001100%payAI27d ago0x222fc8…d5e7e5
0x6a0b…45180xc2a3…2b91BaseBase$0.001100%payAI33d ago0x91afec…e5dba5
0xedd8…e30e0xc2a3…2b91BaseBase$0.001100%payAI46d ago0xa71e8d…914a3c
0xc2a3…2b910xa733…a1d6BaseBase$2.00100%coinbase47d ago0x090358…cf8e02

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0xc2a3…2b91's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xc2a3246d70733169b5228caaea799afe138c2b91

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: 0xc2a3246d70733169b5228caaea799afe138c2b91

curl -s 'https://api.roundhouseai.io/v0/merchants/0xc2a3246d70733169b5228caaea799afe138c2b91'
curl -s 'https://api.roundhouseai.io/v0/entities/0xc2a3246d70733169b5228caaea799afe138c2b91/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.