# Formwerk Banner Submission Target Domain Check

> Formwerk Banner Submission Target Domain Check 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 a banner object on a web page for form analysis.

## Facts

- Endpoint: POST https://formwerk.halowerk.com/v1/pruef/formwerk/ziel/banner
- 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-banner-submission-target-domain-check-e8143d81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BPSb3T_Q77eOzK_S27kjQ

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-banner-submission-target-domain-check-e8143d81 -d '<json body>'
```

Example prompt: Check which domain the banner form on https://example.com submits data to — I want to make sure it's not sending anything to a third-party domain I haven't approved.

## When to prefer this

Use this endpoint when you specifically need to inspect the form submission target domain of a banner element on a webpage, particularly for security auditing, compliance checks, or detecting unauthorized third-party data collection via banner forms. Prefer it over general form checkers when the object of interest is specifically a banner.

## Known failure modes

- Invalid or unreachable URL returns an error
- CSS selector matches zero or multiple elements unexpectedly
- Banner element contains no form with a detectable submission target
- Network timeout when fetching the target page
- Malformed input schema causes validation failure

## How this service works

Prüft am Objekt banner den Befund Zieldomain der Übermittlung.

## Output

Returns a finding (Befund) identifying the target domain to which the banner form submits data, allowing verification of whether form submissions are directed to expected or unexpected domains.

## 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-banner-submission-target-domain-check-e8143d81/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)