x402 merchant
Email Validation | Blackwood$0.005 / callx402-gateway.blackwoodstate8.workers.dev ↗
Email validationVerify emailValidate emailMx recordData

Use when you need email validation, to verify email addresses or validate email syntax and MX records before sending or signup. Do not use for confirming that the mailbox itself exists (no SMTP probe is done) or sending email. Returns JSON with email verification of one address: syntax, domain MX records, disposable, free and role-account flags, SPF and DMARC, and a verdict on whether the domain can receive mail for 0.005 USDC per call. Typical response time 800 ms (p95). Category: Data.

MerchantReport

0x7f29…a758

0x7f299708d49cbaf60815ac52d0b7d645e158a758Explorer
Received
$0.04↓ 86%
Last 7d vs prior 7d
Paid out
$0.00
Last 7d vs prior 7d
Settlements
8↓ 86%
Last 7d vs prior 7d
4
Distinct counterparties
Over the whole indexed history

Received $0.04 of the $847.30M Roundhouse has indexed across 1,331,054 wallets — less than 0.0001% of it.

Chains (from the recent scan): Base (8)

Funds flow over time

Activity

MayJunJulAugSepOct
LessMore

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

Frequent counterparties

CounterpartySent to themReceived from themSettlementsLast
0x87db…f8cf$0.00$0.03513h agoGraph
0xc9c7…1670$0.00$0.00518d agoGraph
0xec2a…d034$0.00$0.00518d agoGraph
0xa1d1…1978$0.00$0.00519d agoGraph

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

Data quality

63% of observed volume is with a single counterparty, in all 8 observed settlements.

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 0x7f29…a758's payment record before paying it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/merchants/0x7f299708d49cbaf60815ac52d0b7d645e158a758

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: 0x7f299708d49cbaf60815ac52d0b7d645e158a758

curl -s 'https://api.roundhouseai.io/v0/merchants/0x7f299708d49cbaf60815ac52d0b7d645e158a758'
curl -s 'https://api.roundhouseai.io/v0/entities/0x7f299708d49cbaf60815ac52d0b7d645e158a758/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.