# Halowerk Business Resolve

> Halowerk Business Resolve is a paid API for AI agents from tools.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-13).

Merges and cross-validates company identity data (name, legal form, address, VAT ID, registry number, contacts, authorized persons) from user input and EU VIES, reporting the source and any conflicts per field.

## Facts

- Endpoint: POST https://tools.halowerk.com/v1/business/resolve
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-business-resolve-83080d1a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_i_oYef9fEmGX0pPzZxemh

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-business-resolve-83080d1a -d '<json body>'
```

Example prompt: Can you resolve and verify the business details for Mustermann GmbH, registered at Musterstraße 1, 10115 Berlin, Germany, with VAT ID DE123456789 — merge what I've given you with VIES data and flag any conflicts between the sources?

## When to prefer this

Choose this endpoint when you need authoritative, source-attributed European business identity data — especially for VAT compliance, supplier onboarding, invoice verification, or contract due diligence. It is uniquely suited for detecting discrepancies between user-provided company data and the EU VIES registry, and for knowing which source each field comes from. Prefer it over a plain VAT format validator when you need full entity resolution across multiple data sources.

## Known failure modes

- VAT ID not found in VIES — returns source-only data from user input with VIES fields empty
- Invalid VAT ID format — returns format validation error before VIES lookup
- VIES service temporarily unavailable — endpoint may return partial results or error indicating external service failure
- Country prefix mismatch between VAT ID and address — flagged as conflict
- Missing required fields — returns validation error specifying which fields are absent

## How this service works

Fuehrt Name, Rechtsform, Anschrift, Umsatzsteuer-Identifikationsnummer, Registernummer, Kontakt und vertretungsberechtigte Personen aus drei Quellen zusammen: der Eingabe, der Pruefung gegen das europaeische Mehrwertsteuer-Informationssystem und den Pflichtangaben der eigenen Seite. Meldet je Feld die Herkunft und weist Widersprueche zwischen den Quellen aus.

## Output

A merged company profile combining user-supplied data and VIES lookup results, with each field annotated by its source (user input, VIES, or mandatory legal imprint). Any discrepancies between sources are explicitly flagged, giving the agent a clear picture of data consistency and trustworthiness per field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "name": {
   "type": "string"
  },
  "domain": {
   "type": "string"
  },
  "vat_id": {
   "type": "string",
   "description": "USt-IdNr. mit Laenderpraefix"
  },
  "address": {
   "type": "string"
  },
  "country": {
   "type": "string"
  },
  "include_raw": {
   "type": "boolean",
   "default": false
  },
  "registration_number": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-business-resolve-83080d1a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools.halowerk.com](https://www.zero.xyz/host/tools.halowerk.com/llms.txt)