# Halowerk Official Sources Directory

> Halowerk Official Sources Directory is a paid API for AI agents from research.halowerk.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Filters a curated directory of authoritative bodies—standards organisations, registers, intergovernmental bodies—by subject and country, returning what each authority is actually authoritative for

## Facts

- Endpoint: POST https://research.halowerk.com/v1/official-sources
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-official-sources-directory-9b3a720c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lZ5HqehVTrtXnVYykndiT

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-official-sources-directory-9b3a720c -d '<json body>'
```

Example prompt: Can you find the official authorities responsible for pharmaceutical regulation in the EU — I need to know what each body is actually authoritative for, not just a list of links.

## When to prefer this

Use this endpoint when you need to identify the correct official or authoritative body for a specific subject area in a specific country or region — especially for research, compliance, legal due diligence, or academic sourcing where credibility of source matters. Prefer this over general web search when you need structured, curated results that tell you what an authority is actually responsible for, not just a list of government URLs.

## Known failure modes

- No matching authorities found for the given subject/country combination — returns empty results
- Overly broad subject query returns too many organisations with overlapping mandates
- Country not covered in the curated directory — returns empty or partial results
- Ambiguous subject term matched to incorrect authority type

## How this service works

Answers the two questions that open any serious piece of research. First, where does something stand officially: filter a curated directory of authorities, registers, standards bodies and intergovernmental organisations by subject and country and get, for each one, what it is actually authoritative for, which is the real answer rather than a bare list of links.

## Output

A list of authoritative organisations matching the subject and country filters, each entry describing the organisation's name, its domain of authority, and a clear statement of what it is officially authoritative for — giving substantive answers rather than bare links.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "maxLength": 2000,
   "description": "Address or domain to classify as official or not."
  },
  "query": {
   "type": "string",
   "maxLength": 200,
   "description": "Free text matched against names and remits, for example Patente or statistics."
  },
  "domain": {
   "enum": [
    "recht",
    "unternehmensregister",
    "statistik",
    "normung",
    "schutzrechte",
    "gesundheit",
    "chemikalien",
    "finanzaufsicht",
    "vergabe",
    "datenportal",
    "umwelt",
    "internet"
   ],
   "type": "string",
   "description": "Subject area to filter by: recht, unternehmensregister, statistik, normung, schutzrechte, gesundheit, chemikalien, finanzaufsicht, vergabe, datenportal, umwelt, internet."
  },
  "country": {
   "type": "string",
   "pattern": "^[A-Za-z]{2,3}$",
   "description": "Jurisdiction as ISO country code, or EU for the Union, or INT for intergovernmental bodies."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-official-sources-directory-9b3a720c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from research.halowerk.com](https://www.zero.xyz/host/research.halowerk.com/llms.txt)