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Agent Utility Network Email Domain Check
x402
Agent Utility Network Email Domain Check is a paid API for AI agents from agent-utility-network.frosty-sound-4560.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Validates an email address's domain by checking for MX records, address records, and mailbox deliverability signals.
Price / call$0.002
Success—
StatusUnknown
How this service works
Quality-scored paid utility APIs for AI agents over x402 on Base USDC.
Output
Returns a JSON object indicating whether the email's domain has MX records (hasMx), has an address/A record (hasAddressRecord), whether the mailbox was verified (mailboxVerified), and the extracted domain name.
Example use cases
Lead list email hygiene
“Before I import this CSV of leads, can you check if the email domain for sarah.jones@prospectco.io is legit — does it have MX records and is the mailbox likely deliverable?”
Signup fraud prevention
“A new user just signed up with the email fake@disposablemail.xyz — can you verify if that domain actually has mail records and whether the mailbox is real before I approve the account?”
B2B outreach validation
“I'm about to email someone at contact@newstartup.ai — can you quickly check if their domain has MX records and whether the address is likely to go through?”
Technical details
Endpoint
POSThttps://agent-utility-network.frosty-sound-4560.workers.dev/v1/paid/email-domain-checkWhen to prefer
Use this endpoint when you need a fast, low-cost programmatic check of email domain validity before sending emails, importing contact lists, or approving user signups. Prefer this over full SMTP verification when you need DNS-level checks (MX/A records) without sending a probe message. At $0.002 per call it is cost-effective for high-volume validation pipelines.
Side effects
- Invalid or malformed email address returns an error
- Domain does not exist returns hasMx: false and hasAddressRecord: false
- DNS lookup timeout may result in inconclusive results
- Email string too short (under 3 chars) or too long (over 320 chars) rejected by schema validation
- Network or payment failure via x402 may cause request to not complete
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"hasMx": true,
"domain": "example.com",
"mailboxVerified": false,
"hasAddressRecord": true
}
}
}Tags
x402
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