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HALOWERK buerowerk — Email Domain Literal Review
x402
HALOWERK buerowerk — Email Domain Literal Review is a paid API for AI agents from buero.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-22).
Validates a batch of email addresses for domain-literal format issues, flagging addresses with non-standard or potentially problematic domain literals
Price / call$0.004
Success—
StatusUnknown
How this service works
HALOWERK buerowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.
Output
Returns a JSON response indicating which submitted email addresses have domain literal issues, with details about the nature of the non-standard or problematic domain literal format found in each flagged address.
Example use cases
Sign-up form email audit
“We just exported 300 email addresses from our registration form — can you check all of them for domain literal problems and tell me which ones look non-standard or suspicious?”
Pre-send deliverability screening
“Before we send out this marketing batch, can you run our recipient list through a domain literal review to catch any addresses that might bounce or be flagged by mail servers?”
CRM data quality check
“I want to clean up our CRM contact emails — can you analyze these 150 addresses and flag any that have unusual domain literals like raw IP addresses instead of proper hostnames?”
Technical details
Endpoint
POSThttps://buero.halowerk.com/v1/baumarkt/mail/domain-literal-review?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to bulk-validate email addresses specifically for domain-literal format compliance — particularly useful when scrubbing sign-up lists, CRM data, or pre-send deliverability checks where non-standard domain literals (e.g. IP address literals) need to be identified. Best when you have up to 500 addresses to check in one call and need a quick, automated review rather than full SMTP-level verification.
Side effects
- Empty or missing emails array returns validation error
- More than 500 emails in a single batch exceeds the maxItems limit
- Individual email strings exceeding 320 characters are rejected
- Malformed JSON body results in a 400 error
- Payment failure via x402 results in a 402 response blocking access
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| emails | array |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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