x402 merchant
PreFlight Checker$0.06 / callx402-api-catalog.onrender.com ↗
McpSecurityAuditTool-poisoningPrompt-injection

MCP server safety audit: completes a real initialize+tools/list handshake, then statically scans every tool's name/description/schema for hidden unicode (tool-poisoning), prompt-injection-style phrasing, and tools that quietly combine multiple high-privilege capabilities (network+filesystem+exec+credential access). If a GitHub repo is supplied, folds in a real software-supply-chain signal too.

MerchantReport

0x9041…847e

0x9041f8a43d0b43209b9227de2c7fb25c9fe3847eExplorer
Received
$3.73↓ 100%
Last 7d vs prior 7d
Paid out
$0.16
Last 7d vs prior 7d
Settlements
191↓ 100%
Last 7d vs prior 7d
6
Distinct counterparties
Over the whole indexed history

Received $3.73 of the $3061.41M Roundhouse has indexed across 1,398,256 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (191)

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
0x22df…1eb4$0.00$3.612362d agoGraph
0x2bd0…7625$0.16$0.0016254d agoGraph
0xa1d1…1978$0.00$0.0427d agoGraph
0xc9c7…1670$0.00$0.04234d agoGraph
0x7722…5e4a$0.00$0.02113d agoGraph
0x7e6b…2b1c$0.00$0.02164d 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 191 observed settlements.

Organic volume $3.89 of $3.89 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase57d ago0x987128…c5ed54
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase57d ago0xd117f0…c81794
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase57d ago0xe53ffe…d0b368
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase57d ago0xc2f3df…c979cb
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase57d ago0x54f64f…07d97b
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase57d ago0x1fa93a…e9cd8a
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase57d ago0xb7b740…e8b100
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0x1e1dda…bee3db
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0xf84af1…b544c0
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0x1b87ac…a64e00
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0x7341e6…4ee9e2
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0x257f2d…c3d056
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0x311903…30279f
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0x4b60ff…288853
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0xce900e…3e1a9a
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0xb204f0…c05718
0x9041…847e0x2bd0…7625BaseBase$0.001100%coinbase58d ago0xaa324e…a0ffd7
0x22df…1eb40x9041…847eBaseBase$1.00100%coinbase62d ago0x833d56…6b2c94
0x22df…1eb40x9041…847eBaseBase$0.02100%coinbase62d ago0x8160e6…c7b0ff
0x22df…1eb40x9041…847eBaseBase$0.06100%coinbase62d ago0xbf2621…a7bbb5
0x22df…1eb40x9041…847eBaseBase$0.05100%coinbase62d ago0xabec0d…2c2616
0x22df…1eb40x9041…847eBaseBase$0.02100%coinbase62d ago0x3df258…adbb51
0x22df…1eb40x9041…847eBaseBase$0.02100%coinbase62d ago0xa813d0…82843c
0x22df…1eb40x9041…847eBaseBase$0.02100%coinbase62d ago0xca1f02…df6bef
0x22df…1eb40x9041…847eBaseBase$0.02100%coinbase62d ago0x216813…bde00d

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0x9041…847e's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x9041f8a43d0b43209b9227de2c7fb25c9fe3847e

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: 0x9041f8a43d0b43209b9227de2c7fb25c9fe3847e

curl -s 'https://api.roundhouseai.io/v0/merchants/0x9041f8a43d0b43209b9227de2c7fb25c9fe3847e'
curl -s 'https://api.roundhouseai.io/v0/entities/0x9041f8a43d0b43209b9227de2c7fb25c9fe3847e/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.