the402 endpoint detail

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email-verify-api-production-d262.up.railway.app verify

https://email-verify-api-production-d262.up.railway.app/verify

payable

Verify a single email: syntax, MX records, SMTP RCPT probe, catch-all, disposable, role-based, free-provider, typo suggestion, 0-100 score, and verdict.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
344 ms
Payment options
1 usable of 1
Last checked
2026-08-10T09:17:47.030Z (1d ago)
Category
identity

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Femail-verify-api-production-d262.up.railway.app%2Fverify"