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Netzhandwerker Email Validate
x402
Netzhandwerker Email Validate is a paid API for AI agents from tools.netzhandwerker.de, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Validates one or a batch of up to 50 email addresses, with optional SMTP-level deliverability checking
Price / call$0.001
Success—
StatusUnknown
How this service works
x402-Werkzeuge für autonome Agenten.
Output
Returns validation results for one or up to 50 email addresses, including syntax validity, domain/MX record checks, and optionally SMTP-level deliverability status indicating whether the mailbox actually exists and accepts mail.
Example use cases
Pre-send contact list cleanup
“I have a list of 40 email addresses from a lead form — can you validate all of them and flag which ones are invalid or undeliverable before I send out my newsletter?”
New user registration guard
“Before we create an account for the user who entered 'signup@tempmail.org', can you verify that email address is real and actually accepts mail via SMTP?”
CRM data hygiene check
“I've got a batch of 25 customer emails exported from our CRM — please validate them all, with SMTP checks, so I can remove the bad ones and keep our bounce rate down.”
Technical details
Endpoint
POSThttps://tools.netzhandwerker.de/v1/email/validateWhen to prefer
Choose this endpoint when you need fast, low-cost email validation with optional SMTP-level deliverability checking, especially for batch processing up to 50 addresses in a single $0.001 call. Prefer it over basic regex-only validators when you need to confirm a mailbox actually exists, and over heavyweight email verification SaaS platforms when cost-per-check and per-call x402 micropayment compatibility matter.
Side effects
- Invalid JSON body or missing both 'email' and 'emails' fields — returns 400 Bad Request
- Batch exceeds 50 addresses — may return error or truncate
- SMTP check times out for slow or unresponsive mail servers — may return inconclusive result
- Payment not attached or insufficient — returns 402 Payment Required
- Network/DNS lookup failure for domain — returns error for that address
- Temporary SMTP greylisting may cause false negatives on deliverability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| string | ||
| emails | array | Stapel bis 50 Adressen, ein Preis pro Aufruf |
| smtp_check | boolean |
Output
Schema · Response
{
"type": "json",
"example": {
"results": [
{
"email": "info@example.com",
"score": 40,
"domain": "example.com",
"verdict": "risky",
"mx_found": false,
"disposable": false,
"role_account": true,
"valid_syntax": true,
"free_provider": false
}
]
}
}Tags
x402
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