x402 merchant
FractalAI x402 Notary$0.005 / callfractalai.net.co
WitnessNotaryPost-quantumMl-dsa-65x402

FractalAI Notary: pay for an independent ML-DSA-65 attestation of an x402 settlement.

MerchantReport

0xc137…ef4f

0xc13789e82661635d9cea38a53a0390cf9939ef4fExplorer
Received
$1.66↓ 51%
Last 7d vs prior 7d
Paid out
$0.04
Last 7d vs prior 7d
Settlements
81↓ 39%
Last 7d vs prior 7d
6
Distinct counterparties
Over the whole indexed history

Received $1.66 of the $258.47M Roundhouse has indexed across 713,069 walletsless than 0.0001% of it.

Chains (from the recent scan): Base (79)

Funds flow over time

Activity

MarAprMayJunJulAugSep
LessMore

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

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x9d81…2756$0.00$1.22612d agoGraph
0x0c9a…32a4$0.00$0.39138d agoGraph
0x35ed…3e59$0.00$0.00514d agoGraph
0xc9c7…1670$0.00$0.00517d agoGraph
0x7dd8…17d2$0.00$0.00517d agoGraph

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

Data quality

2 self-dealing settlements (payer = payee) observed; 73% of observed volume is with a single counterparty, in all 79 observed settlements.

Organic volume $1.62 of $1.66 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x9d81…27560xc137…ef4fBase$0.02100%coinbase2d ago0xd808aa…f0a274
0x9d81…27560xc137…ef4fBase$0.02100%coinbase2d ago0xb4a8c9…c49f0d
0x9d81…27560xc137…ef4fBase$0.02100%coinbase3d ago0x97a9d5…691139
0x9d81…27560xc137…ef4fBase$0.02100%coinbase3d ago0xf93ed7…9467ce
0x9d81…27560xc137…ef4fBase$0.02100%coinbase3d ago0xb5fdc7…4151d8
0x9d81…27560xc137…ef4fBase$0.02100%coinbase3d ago0x3843c9…c3e740
0x9d81…27560xc137…ef4fBase$0.02100%coinbase4d ago0x26a119…5cc4c8
0x9d81…27560xc137…ef4fBase$0.02100%coinbase4d ago0x43ef16…8bd0bf
0x9d81…27560xc137…ef4fBase$0.02100%coinbase4d ago0x689a49…f059bf
0x35ed…3e590xc137…ef4fBase$0.005100%coinbase4d ago0x3aa216…0e0845
0x9d81…27560xc137…ef4fBase$0.02100%coinbase4d ago0x1a04c0…0edb33
0x9d81…27560xc137…ef4fBase$0.02100%coinbase5d ago0x531648…b480de
0x9d81…27560xc137…ef4fBase$0.02100%coinbase5d ago0x2f0e44…a34e16
0x9d81…27560xc137…ef4fBase$0.02100%coinbase5d ago0xdd5b34…2d128b
0x9d81…27560xc137…ef4fBase$0.02100%coinbase5d ago0xa34d58…a48c32
0x9d81…27560xc137…ef4fBase$0.02100%coinbase6d ago0xb9de67…ae2774
0x9d81…27560xc137…ef4fBase$0.02100%coinbase6d ago0xb8d67d…7ef211
0x9d81…27560xc137…ef4fBase$0.02100%coinbase6d ago0xf57de4…d6b24c
0x9d81…27560xc137…ef4fBase$0.02100%coinbase6d ago0x244876…30c343
0x9d81…27560xc137…ef4fBase$0.02100%coinbase7d ago0x0e111d…cf6de8
0xc9c7…16700xc137…ef4fBase$0.005100%coinbase7d ago0xfec4e7…07083b
0x7dd8…17d20xc137…ef4fBase$0.005100%coinbase7d ago0xdb6ff5…213f88
0x9d81…27560xc137…ef4fBase$0.02100%coinbase7d ago0xef2b9d…401f5b
0x9d81…27560xc137…ef4fBase$0.02100%coinbase7d ago0xb4e35e…b7a4b7
0x9d81…27560xc137…ef4fBase$0.02100%coinbase7d ago0x954492…a5da57

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0xc137…ef4f's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0xc13789e82661635d9cea38a53a0390cf9939ef4f

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: 0xc13789e82661635d9cea38a53a0390cf9939ef4f

curl -s 'https://api.roundhouseai.io/v0/merchants/0xc13789e82661635d9cea38a53a0390cf9939ef4f'
curl -s 'https://api.roundhouseai.io/v0/entities/0xc13789e82661635d9cea38a53a0390cf9939ef4f/settlements?limit=50'

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.