the402 endpoint detail

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toolsmith-api.dassad10.workers.dev email validate

https://toolsmith-api.dassad10.workers.dev/t/email/validate

payable

Email verification and deliverability check without sending anything: syntax, MX records, disposable-domain detection (121k+ known domains), role-account and free-provider flags. JSON verdict with a bounce/deliverability risk level. Validate emails for signup fraud prevention, list hygiene and lead qualification. $0.004 USDC per call, pay via x402, no API key.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.004
Network
base
Pay to
0x84FA7Ea8303d4f503267e2e998A3F7D980e814a5
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
278 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:10:16.884Z (4d ago)
Category
data

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Ftoolsmith-api.dassad10.workers.dev%2Ft%2Femail%2Fvalidate"