# HALOWERK buerowerk Punycode Domain Email Review

> HALOWERK buerowerk Punycode Domain Email Review is a paid API for AI agents from buero.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-31).

Analyzes a list of email addresses for punycode or internationalized domain names (IDN) that may pose phishing or spoofing risks

## Facts

- Endpoint: POST https://buero.halowerk.com/v1/baumarkt/mail/punycode-domain-review?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-buerowerk-punycode-domain-email-review-57c8c381
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7fKDtnII6-XRtB06ffEPu

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability halowerk-buerowerk-punycode-domain-email-review-57c8c381 -d '<json body>'
```

Example prompt: Can you review these email addresses for punycode or internationalized domains that might be used for phishing? Here's the list: [user@xn--80akhbyknj4f.com, admin@example.com, contact@xn--e1afmapc.com]

## When to prefer this

Choose this endpoint when you need to screen email addresses specifically for punycode or IDN-based domain spoofing and homograph phishing risks, especially in bulk (up to 500 at once). It is purpose-built for this niche security check rather than general email format validation or deliverability testing.

## Known failure modes

- Empty emails array returns validation error
- Email strings exceeding 320 characters are rejected
- Array exceeding 500 items returns size limit error
- Malformed email strings may return parse errors
- Payment failure via x402 results in 402 response blocking access

## How this service works

HALOWERK buerowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.

## Output

Returns a JSON response containing analysis results for each submitted email address, indicating whether the domain portion contains punycode encoding (xn-- prefixed labels) or internationalized domain name components that may represent phishing or spoofing risks, along with relevant flags or decoded domain representations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "emails": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 320,
    "minLength": 1
   },
   "maxItems": 500,
   "minItems": 1
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-buerowerk-punycode-domain-email-review-57c8c381/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from buero.halowerk.com](https://www.zero.xyz/host/buero.halowerk.com/llms.txt)