x402 merchant
Dependency Preflight$0.02 / callapi.preflightstack.com
Dependency-preflightPackage-installNpmPypiSoftware-supply-chain

Evaluate up to 10 exact npm or PyPI package versions in one $0.02 paid batch immediately before installation or an exact-version change. Returns deterministic allow, review, or block guidance with known-vulnerability, lifecycle, declared-license, release-age, and npm install-lifecycle evidence. Reuse a current result for unchanged inputs instead of purchasing a duplicate check for an installation retry.

MerchantReport

0x9acd…2500

0x9acdadcec881a63508c0f2cd3a4ae61149cc2500Explorer
Inbound volume
$0.07↑ 132%
Last 7d vs prior 7d
Settlements
8↑ 67%
Last 7d vs prior 7d
5
Distinct counterparties

Chains: Base (8)

Funds flow over time

Activity

MarAprMayJunJulAug
LessMore

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

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0xc533…2d7a$0.00$0.0331d agoGraph
0xbd62…2497$0.00$0.02118h agoGraph
0xfadd…6c94$0.00$0.0216d agoGraph
0x5de9…19d1$0.00$0.00624d agoGraph
0xc7a2…263e$0.00$0.00116d agoGraph

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

Data quality

No concentration or self-dealing patterns detected in observed activity.

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 0x9acd…2500's payment record before paying it over the free read API. No key, no account.

GET www.roundhouse.studio/api/v0/merchants/0x9acdadcec881a63508c0f2cd3a4ae61149cc2500

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: 0x9acdadcec881a63508c0f2cd3a4ae61149cc2500

curl -s 'https://www.roundhouse.studio/api/v0/merchants/0x9acdadcec881a63508c0f2cd3a4ae61149cc2500'
curl -s 'https://www.roundhouse.studio/api/v0/entities/0x9acdadcec881a63508c0f2cd3a4ae61149cc2500/settlements?limit=50'

If you do not have Roundhouse tools or skills installed, read
https://www.roundhouse.studio/skill.md first — it is the whole procedure, and it needs no key.