Roundhouse AI
x402 merchant
PostAgent$1.37 / callpostagent-api.interpretai.tech ↗
MailPrintLettersUspsFulfillment

Print and mail a physical US letter (PDF, HTML, Markdown, DOCX, or image) via USPS, paid in USDC. Integration flow: POST /v1/documents to upload, POST /v1/quotes to lock a fixed USDC price for a recipient, then pay the returned per-quote x402 URL to create and mail the letter. Price is fixed per quote.

MerchantReport

0x4ecc…007f

0x4ecc58bb1e8fc25eefa23f071bd78c98660a007fExplorer
Received
$45.08
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
18
Last 7d vs prior 7d
1
Distinct counterparties
Over the whole indexed history

Received $45.08 of the $260.88M Roundhouse has indexed across 716,644 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (18)

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
0x4016…3398$0.00$45.081892d agoGraph

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

Data quality

100% of observed volume is with a single counterparty; all observed volume is with one counterparty, in all 18 observed settlements.

Organic volume $45.08 of $45.08 total.

Recent activity

Payer PayeeChainAmountx402RouteAgeTxn hash
0x4016…33980x4ecc…007fBase$21.63100%coinbase92d ago0xaadcf4…510a3a
0x4016…33980x4ecc…007fBase$1.55100%coinbase95d ago0x9cbe0a…146b19
0x4016…33980x4ecc…007fBase$1.37100%coinbase99d ago0x80bc10…11c407
0x4016…33980x4ecc…007fBase$1.37100%coinbase99d ago0xcdf83a…abed96
0x4016…33980x4ecc…007fBase$0.90100%coinbase106d ago0xeadfb5…7f3de5
0x4016…33980x4ecc…007fBase$0.02100%coinbase106d ago0xc2ab8c…f6c0cd
0x4016…33980x4ecc…007fBase$1.37100%coinbase111d ago0x922cb5…12e499
0x4016…33980x4ecc…007fBase$1.37100%coinbase112d ago0x1a2f5b…30faa3
0x4016…33980x4ecc…007fBase$1.37100%coinbase113d ago0x2a032a…e6b566
0x4016…33980x4ecc…007fBase$1.37100%coinbase113d ago0x179a9e…058383
0x4016…33980x4ecc…007fBase$1.37100%coinbase113d ago0x7a61bf…6ad155
0x4016…33980x4ecc…007fBase$1.37100%coinbase113d ago0x9cb8ae…f8389c
0x4016…33980x4ecc…007fBase$1.37100%coinbase113d ago0x517ba4…4e1c6c
0x4016…33980x4ecc…007fBase$1.37100%coinbase113d ago0x3b3fc4…9f6cdd
0x4016…33980x4ecc…007fBase$1.37100%coinbase113d ago0xced704…152259
0x4016…33980x4ecc…007fBase$1.97100%coinbase114d ago0xf57455…1359e7
0x4016…33980x4ecc…007fBase$1.97100%coinbase114d ago0x270cc9…589c29
0x4016…33980x4ecc…007fBase$1.97100%coinbase114d ago0x316063…f1f52e

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will check 0x4ecc…007f's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x4ecc58bb1e8fc25eefa23f071bd78c98660a007f

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: 0x4ecc58bb1e8fc25eefa23f071bd78c98660a007f

curl -s 'https://api.roundhouseai.io/v0/merchants/0x4ecc58bb1e8fc25eefa23f071bd78c98660a007f'
curl -s 'https://api.roundhouseai.io/v0/entities/0x4ecc58bb1e8fc25eefa23f071bd78c98660a007f/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.