x402 merchant
Futures Expiry API$0.01 / callfutures-expiry-api.onrender.com ↗
FinanceFuturesExpirationCalendar

Returns the next quarterly contracts of a CME or Eurex index future with contract symbol, last trading day, trading end time in UTC and local time, and roll date.

MerchantReport

0xcb3a…927b

0xcb3ae5bf8b1b4b3fe9d987a9a733830095a2927bExplorer
Received
$0.02→ 0%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
9↓ 88%
Last 7d vs prior 7d
4
Distinct counterparties
Over the whole indexed history

Received $0.02 of the $846.65M Roundhouse has indexed across 1,329,967 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (9)

Funds flow over time

Activity

MayJunJulAugSepOct
LessMore

One square per day; click a day to see its settlements in the ledger.

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x7722…5e4a$0.00$0.0112d agoGraph
0x1114…2717$0.00$0.00868d agoGraph
0xa1d1…1978$0.00$0.00117d agoGraph
0xc9c7…1670$0.00$0.00117d agoGraph

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

Data quality

50% of observed volume is with a single counterparty, in all 9 observed settlements.

Recent activity

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0xcb3a…927b's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xcb3ae5bf8b1b4b3fe9d987a9a733830095a2927b

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: 0xcb3ae5bf8b1b4b3fe9d987a9a733830095a2927b

curl -s 'https://api.roundhouseai.io/v0/merchants/0xcb3ae5bf8b1b4b3fe9d987a9a733830095a2927b'
curl -s 'https://api.roundhouseai.io/v0/entities/0xcb3ae5bf8b1b4b3fe9d987a9a733830095a2927b/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.