# HALOWERK Nordic Land – Denmark Water & Wetland Share

> HALOWERK Nordic Land – Denmark Water & Wetland Share is a paid API for AI agents from nordland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the combined fractional share of permanent water, herbaceous wetland, and mangrove land-cover classes for a given coordinate within Denmark.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/dk-water-wetland-share
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-nordic-land-denmark-water-wetland-share-d5913707
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iMzZfNZFj9VknG4uJd-sz

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-nordic-land-denmark-water-wetland-share-d5913707 -d '<json body>'
```

Example prompt: What's the combined water and wetland land-cover share at latitude 55.68 and longitude 12.57 in Denmark — I need to know how much of that area is classified as permanent water, herbaceous wetland, or mangrove.

## When to prefer this

Choose this endpoint when you need precise, per-point water and wetland land-cover share data specifically for locations within Denmark, particularly for environmental assessments, land suitability analysis, or hydrological studies. It is distinct from soil property endpoints on the same platform and specifically combines permanent water, herbaceous wetland, and mangrove classes into a single composite metric. The pre-payment boundary validation for Denmark makes it safe and cost-efficient for automated pipelines.

## Known failure modes

- Coordinate outside Denmark boundary — request rejected before payment, returns error indicating location is out of coverage
- Coordinate outside the broader European bounding box — rejected at input validation
- Missing or malformed latitude/longitude — returns schema validation error
- Network timeout or service unavailability — returns 5xx error

## How this service works

Combined share of permanent water, herbaceous wetland and mangrove classes. The coordinate is validated against the Natural Earth boundary for Denmark; results outside it are rejected before payment.

## Output

A numeric fraction (0–1) representing the combined share of permanent water, herbaceous wetland, and mangrove land-cover classes at the queried point within Denmark. Points outside the Denmark boundary are rejected before payment is processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "maximum": 72.5,
   "minimum": 34,
   "description": "WGS84 latitude inside the published European coverage."
  },
  "longitude": {
   "type": "number",
   "maximum": 40.5,
   "minimum": -31.5,
   "description": "WGS84 longitude inside the published European coverage."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-nordic-land-denmark-water-wetland-share-d5913707/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nordland.halowerk.com](https://www.zero.xyz/host/nordland.halowerk.com/llms.txt)