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Delx Is Email Shape
x402
Delx Is Email Shape is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates whether a string has a valid email address shape (syntax only, no network checks)
Price / call$0.001
Success—
StatusUnknown
How this service works
Validate email shape (not mailbox existence). Call when you cheaply reject obvious non-emails before enrichment. Returns valid boolean for $0.001 USDC via x402 on Base. Shape only—not MX, SMTP, or ownership proof. No network, no keys, no retention. Results are advisory; the caller owns budgets, auth, and production controls.
Output
A boolean field indicating whether the input string conforms to a valid email address shape. Does not verify mailbox existence, MX records, SMTP reachability, or domain ownership — purely structural/syntactic validation.
Example use cases
Pre-enrichment email gating
“Before spending credits on email enrichment for this contact list, check if 'not-an-email' has a valid email format so we can drop obvious garbage upfront.”
Form submission validation
“A user just submitted 'hello@' as their email on our signup form — can you check if that's a properly shaped email address before we try to send a welcome message?”
Data pipeline input sanitization
“I'm about to process a batch of user records — can you validate whether 'user@@domain..com' looks like a real email address format so I can flag it as bad input?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/is-email-shapeWhen to prefer
Choose this endpoint when you need a fast, cheap ($0.001 USDC), zero-network syntactic check on email strings before committing to heavier enrichment or verification services. Ideal as a preflight filter in agent pipelines to reject obvious non-emails without MX lookups, SMTP handshakes, or API keys. Not suitable when you need to confirm deliverability or mailbox existence.
Side effects
- Missing or empty email field returns an error
- Non-string input may be rejected
- Payment failure via x402 protocol will block the call
- Ambiguous or borderline RFC-edge-case emails may return unexpected results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | Input field: email. |
Output
Schema · Response
{
"type": "json",
"example": {
"email": "ops@delx.ai",
"valid": true,
"schema": "delx/util-is-email-shape/v1"
}
}Tags
x402
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