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M0 Lead Validate — Email & Domain Quality Signals
x402
M0 Lead Validate — Email & Domain Quality Signals is a paid API for AI agents from m0.aiverall.com, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-15).
Validates a lead's email address and domain before enrichment or outreach, returning syntax, MX record, domain resolution, role-account, disposable-domain, and mailbox confirmation signals.
Price / call$0.015
Success—
StatusUnknown
How this service works
Machine-native capabilities for agents. Primary: URL Extraction -- fetch a public URL, get back clean text, no third-party dependency. Also available: pre-flight lead-quality signals before spending money enriching, contacting, or storing a lead.
Output
A JSON object containing: domain (extracted domain string), version (model version used), valid_syntax (boolean — email passes RFC syntax rules), mx_exists (boolean — domain has MX DNS records), domain_resolves (boolean — domain resolves in DNS), is_role_account (boolean — email is a generic role alias like info@ or admin@), is_disposable_domain (boolean — domain is a known throwaway provider), and mailbox_confirmed (boolean — mailbox-level SMTP verification result).
Example use cases
CRM intake email screening
“I'm about to import a batch of new leads and I want to screen them first — can you check the email jane.doe@startup.io and tell me if it's syntactically valid, has working MX records, and isn't a throwaway or role account like info@ or admin@?”
Cold outreach deliverability check
“I'm about to send a cold email to cto@newventure.co — before I do, can you verify that the domain resolves, has valid mail servers, and that the mailbox is likely real so I don't waste the send?”
Signup fraud prevention
“A new user just registered with the email support@mailinator.com — can you run a quick lead quality check to see if this is a disposable domain or a role-based address so I can decide whether to flag the signup?”
Technical details
Endpoint
POSThttps://m0.aiverall.com/v1/lead-validateWhen to prefer
Choose this endpoint when you need a lightweight, low-cost pre-flight signal on a lead's email quality before committing to more expensive enrichment, outreach, or CRM storage operations. It is ideal for filtering disposable emails, role accounts, and syntactically invalid addresses at the top of a pipeline. Prefer this over full enrichment APIs when the primary question is 'is this email real and worth pursuing?' rather than 'who is this person?'. It pays per-call via x402/USDC with no subscription required, making it suitable for agentic pipelines with variable lead volumes.
Side effects
- Invalid or malformed email input — returns syntax error or valid_syntax: false
- Domain not found in DNS — domain_resolves: false, mx_exists: false
- SMTP probe blocked by mail server — mailbox_confirmed: false even for valid inboxes
- Known disposable domain correctly flagged but legitimate provider incorrectly classified — possible false positive on is_disposable_domain
- Payment failure via x402 protocol — 402 response, no validation result returned
- Rate limiting or upstream timeout — 429 or 5xx error with no result
Output
Schema · Response
{
"type": "object",
"format": "json",
"example": {
"domain": "example.com",
"version": "m0-email-verify-v1",
"mx_exists": true,
"valid_syntax": true,
"domain_resolves": true,
"is_role_account": false,
"mailbox_confirmed": false,
"is_disposable_domain": false
}
}Tags
x402
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