# HALOWERK formwerk – Fremddomain-Zählung bei Absendung

> HALOWERK formwerk – Fremddomain-Zählung bei Absendung is a paid API for AI agents from formwerk.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-23).

Checks a form submission endpoint (URL) and counts the number of third-party/foreign domains contacted during the submission process.

## Facts

- Endpoint: POST https://formwerk.halowerk.com/v1/pruef/formwerk/fremddomain/absendung?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-formwerk-fremddomain-z-hlung-bei-absendung-980bbab2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cI6pT1kWvINgoUm_-Pytx

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-formwerk-fremddomain-z-hlung-bei-absendung-980bbab2 -d '<json body>'
```

Example prompt: How many third-party domains are contacted when this form is submitted? Check the submission endpoint at https://example.com/contact and count all external/foreign domain connections it makes.

## When to prefer this

Choose this endpoint when you need to specifically count the number of distinct third-party/foreign domains contacted at the moment a web form is submitted (the 'absendung' event). This is distinct from general page-load third-party analysis or cookie counting. Ideal for GDPR/privacy audits, security reviews of form data leakage, or compliance monitoring of specific form submission endpoints.

## Known failure modes

- Invalid or unreachable URL returns an error or empty result
- URL is not a public HTTP(S) address – validation failure
- CSS selector matches no element or multiple elements (first match used)
- Network timeout if the target server is slow to respond
- Form submission does not trigger any network requests (zero domains counted, not an error)
- Malformed input schema returns a 400-level error
- Rate limiting or access restrictions on the target URL prevent analysis

## How this service works

Prüft am Objekt absendung den Befund Zahl kontaktierter Fremddomains.

## Output

Returns the count (Befund: Zahl) of foreign/third-party domains (Fremddomains) contacted at the moment a form submission (Absendung) is triggered at the given URL, along with associated metadata about the submission analysis.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "ziel": {
   "oneOf": [
    {
     "type": "string",
     "maxLength": 2048,
     "minLength": 1,
     "description": "Öffentliche HTTP(S)-Adresse; bei DNS-Befunden Domain oder öffentliche IP."
    },
    {
     "type": "object",
     "required": [
      "adresse"
     ],
     "properties": {
      "adresse": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "selektor": {
       "type": "string",
       "maxLength": 240,
       "minLength": 1,
       "description": "CSS-Selektor: genau ein Objekt, sonst erster Treffer des Objektfilters."
      },
      "vergleich": {
       "type": "string",
       "maxLength": 2048,
       "description": "Öffentliche Vergleichsadresse für Link-, Sitemap- oder Sprachbefunde."
      },
      "user_agent": {
       "type": "string",
       "pattern": "^[A-Za-z0-9_-]{1,80}$"
      },
      "dkim_selektor": {
       "type": "string",
       "pattern": "^[A-Za-z0-9_-]{1,63}$"
      }
     },
     "additionalProperties": false
    }
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-formwerk-fremddomain-z-hlung-bei-absendung-980bbab2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from formwerk.halowerk.com](https://www.zero.xyz/host/formwerk.halowerk.com/llms.txt)