# Formwerk Form Submission Target Domain Checker

> Formwerk Form Submission Target Domain Checker is a paid API for AI agents from formwerk.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Checks the submission target domain (Zieldomain) of HTML forms found on a given web page or URL.

## Facts

- Endpoint: POST https://formwerk.halowerk.com/v1/pruef/formwerk/ziel/formular
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/formwerk-form-submission-target-domain-checker-12f81b7d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DyK8ki3jrMshrKMHhbh1l

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 formwerk-form-submission-target-domain-checker-12f81b7d -d '<json body>'
```

Example prompt: Can you check which domain the contact form on https://example.com/contact actually submits data to? I want to know if it's sending to a third-party domain.

## When to prefer this

Use this endpoint when you need to specifically check where an HTML form (formular) on a given web page submits its data — particularly to detect whether forms send data to unexpected, third-party, or potentially malicious domains. Prefer this over generic scraping tools when the specific question is about form submission target domains for security or privacy auditing.

## Known failure modes

- URL is not publicly accessible or returns an error
- No form found at the specified URL or matching the given CSS selector
- Form has no detectable action/submission domain
- Invalid or non-public URL provided
- Response times out for slow or unresponsive target pages
- CSS selector matches no elements or multiple ambiguous elements

## How this service works

Prüft am Objekt formular den Befund Zieldomain der Übermittlung.

## Output

Returns a finding (Befund) describing the target domain (Zieldomain) to which the HTML form on the specified page submits its data, based on the form's action attribute or detected submission endpoint.

## 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/formwerk-form-submission-target-domain-checker-12f81b7d/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)