Api Endpoint

mailcheck.hugen.tokyo

MX record lookup for any domain — returns whether mail servers exist and their hostnames sorted by priority. Verify email deliverability before sending. Supports all TLDs including ccTLDs and new gTLDs. No DNS library setup needed. Accepts USDC payments on Base and Solana

Open interactive test console

Offering

Provider
mailcheck.hugen.tokyo
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Infrastructure
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://mailcheck.hugen.tokyo/mailcheck/mx
MIME type
application/json
First seen
2026-10-16T01:58:26.121Z
Last seen
Tags
None supplied

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z"
  }
]

Observed health

Status
Healthy
Latest latency
1342 ms
Average latency
1379 ms
HTTP status
402
Last checked
Reachability
92.9% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "method": "GET",
  "queryParams": {
    "domain": "gmail.com"
  },
  "type": "http"
}

Output schema

{
  "type": "json",
  "example": {
    "domain": "gmail.com",
    "mx_found": true,
    "mx_records": [
      "gmail-smtp-in.l.google.com",
      "alt1.gmail-smtp-in.l.google.com"
    ]
  }
}