x402 merchant
ScienceChemistryThermodynamicsCombustionCantera

Physical chemistry (Cantera + CoolProp): chemical equilibrium, adiabatic flame temperature, ignition delay, reactor simulation, flame speed, and thermo/transport/fluid properties. Bundled mechanisms (gri30, h2o2, air). Paid in USDC on Base or Solana.

MerchantReport

0xf786…5f3f

0xf786a555be87c6d3b316c976b643c70326565f3fExplorer
Received
$0.99↓ 100%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
70↓ 100%
Last 7d vs prior 7d
12
Distinct counterparties
Over the whole indexed history

Received $0.99 of the $3066.54M Roundhouse has indexed across 1,400,255 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (70)

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
0x8872…3f9b$0.00$0.91558d agoGraph
0xec2a…d034$0.00$0.03533d agoGraph
0xc498…254a$0.00$0.005112d agoGraph
0xcb4c…bbb8$0.00$0.005114d agoGraph
0xfb4d…1753$0.00$0.005119d agoGraph
0xe3ba…3fb3$0.00$0.005156d agoGraph
0xc533…2d7a$0.00$0.005171d agoGraph
0x2e26…ddde$0.00$0.005176d agoGraph

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

Data quality

93% of observed volume is with a single counterparty, in all 70 observed settlements.

Organic volume $0.99 of $0.99 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x8872…3f9b0xf786…5f3fBaseBase$0.01100%coinbase8d ago0x3f0e53…2dbb4f
0x8872…3f9b0xf786…5f3fBaseBase$0.02100%coinbase8d ago0x0c8913…5b31dc
0x8872…3f9b0xf786…5f3fBaseBase$0.05100%coinbase8d ago0xc0b1de…ccc693
0x8872…3f9b0xf786…5f3fBaseBase$0.005100%coinbase8d ago0x36f963…78499e
0x8872…3f9b0xf786…5f3fBaseBase$0.01100%coinbase8d ago0x948770…e69199
0x8872…3f9b0xf786…5f3fBaseBase$0.02100%coinbase11d ago0x06c91f…c72ef0
0x8872…3f9b0xf786…5f3fBaseBase$0.01100%coinbase11d ago0x88590a…233024
0x8872…3f9b0xf786…5f3fBaseBase$0.05100%coinbase11d ago0x54d91d…b41189
0x8872…3f9b0xf786…5f3fBaseBase$0.005100%coinbase11d ago0xffdd8a…5f287c
0x8872…3f9b0xf786…5f3fBaseBase$0.01100%coinbase11d ago0x30a5ed…a9d7df
0xc498…254a0xf786…5f3fBaseBase$0.005100%coinbase12d ago0x8f67b1…892563
0xcb4c…bbb80xf786…5f3fBaseBase$0.005100%coinbase14d ago0x2a7306…d41755
0xfb4d…17530xf786…5f3fBaseBase$0.005100%coinbase19d ago0x57c72c…af249e
0xa1d1…19780xf786…5f3fBaseBase$0.003100%coinbase26d ago0x4f5f58…aaeade
0xec2a…d0340xf786…5f3fBaseBase$0.003100%coinbase33d ago0x288b51…3cdbf5
0xec2a…d0340xf786…5f3fBaseBase$0.005100%coinbase33d ago0xda9a00…3e1ca0
0xec2a…d0340xf786…5f3fBaseBase$0.005100%coinbase33d ago0x571c5d…7b87e5
0xec2a…d0340xf786…5f3fBaseBase$0.005100%coinbase33d ago0x233ada…af9e7e
0x8872…3f9b0xf786…5f3fBaseBase$0.02100%coinbase39d ago0x8e7107…d2ac9a
0x8872…3f9b0xf786…5f3fBaseBase$0.01100%coinbase39d ago0xeaa4de…f2d383
0x8872…3f9b0xf786…5f3fBaseBase$0.01100%coinbase39d ago0x9aad28…e5029b
0x8872…3f9b0xf786…5f3fBaseBase$0.05100%coinbase39d ago0xf5aff6…258fac
0x8872…3f9b0xf786…5f3fBaseBase$0.005100%coinbase39d ago0x63a2eb…7068be
0xec2a…d0340xf786…5f3fBaseBase$0.01100%coinbase41d ago0x6e101c…e752b4
0x8872…3f9b0xf786…5f3fBaseBase$0.02100%coinbase41d ago0x90c3a4…e7bd93

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0xf786…5f3f's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xf786a555be87c6d3b316c976b643c70326565f3f

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: 0xf786a555be87c6d3b316c976b643c70326565f3f

curl -s 'https://api.roundhouseai.io/v0/merchants/0xf786a555be87c6d3b316c976b643c70326565f3f'
curl -s 'https://api.roundhouseai.io/v0/entities/0xf786a555be87c6d3b316c976b643c70326565f3f/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.