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Delx Email Syntax Check
x402
Delx Email Syntax Check is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Validates the syntax of an email address and parses it into its local and domain components
Price / call$0.001
Success—
StatusUnknown
How this service works
Validate basic email syntax and split local/domain. Call when preflight before MX/DNS steps. Returns ok, local, domain as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.
Output
Returns a JSON object with an 'ok' boolean indicating whether the email is syntactically valid, the 'local' part (before the @), the 'domain' part (after the @), and a schema identifier string. No external lookup or deliverability check is performed — purely structural validation.
Example use cases
Form input validation before registration
“Before I store this user's email in the database, can you verify that 'jane_smith@mycompany.org' is syntactically valid and break it into username and domain?”
Catch bad emails in scraped contact data
“I scraped a bunch of contact emails and one looks weird — can you check if 'support@@broken..com' passes basic email syntax validation?”
Pre-flight check before sending newsletter
“Before we queue the newsletter send, verify that 'newsletter-subscriber@domain.io' is a properly formatted email address so we don't bounce it immediately.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/email-syntax-checkWhen to prefer
Use this endpoint when you need a fast, cheap, deterministic syntax check on an email address — especially before persisting to a database, sending via SMTP, or passing to downstream services. It does not perform DNS or SMTP verification; choose it when structural validation is sufficient and you want the local/domain split as a bonus. At $0.001 per call it is cost-effective for high-volume form validation pipelines.
Side effects
- Missing or empty email field returns a validation error
- Malformed input type (non-string) may return a 400-style error
- Email with no @ symbol returns ok: false
- Completely empty string input likely returns ok: false
- Network timeout or service unavailability returns a 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | Email address to validate |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"local": "user",
"domain": "example.com",
"schema": "delx/util-email-syntax-check/v1"
}
}Tags
x402
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