# HALOWERK Nordic Land – Water & Wetland Share

> HALOWERK Nordic Land – 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 coordinate point within Norway.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/no-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-water-wetland-share-56e6c8b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uz9-O9CszKhPz5VtirRhy

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-water-wetland-share-56e6c8b9 -d '<json body>'
```

Example prompt: What's the combined share of permanent water, herbaceous wetland, and mangrove land cover at latitude 68.4, longitude 17.3 in Norway? I need the HALOWERK water-wetland fraction for that point.

## When to prefer this

Use this endpoint when you need to quantify hydrological land cover (water, wetland, mangrove) for a specific point coordinate within Norway, particularly for environmental assessments, site screening, or geospatial data enrichment pipelines. It is preferable to general land-cover APIs when Norway-specific boundary validation and pay-per-call pricing at $0.003 USDC via x402 is acceptable. Choose alternatives if you need global coverage, raster tiles, or non-Norwegian European locations.

## Known failure modes

- Coordinate outside Norway boundary: request rejected before payment, returns validation error
- Latitude or longitude outside published European coverage range (lat 34–72.5, lon -31.5–40.5): schema validation failure
- Malformed request body or missing required fields: returns 400-level error
- Point falls within Norway boundary but has no land-cover data: may return null or zero fraction
- Network or service timeout: no result returned

## How this service works

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

## Output

A numeric fraction (0–1 or percentage) representing the combined share of permanent water, herbaceous wetland, and mangrove land-cover classes sampled at the requested coordinate within Norway. Coordinates outside the Norway 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-water-wetland-share-56e6c8b9/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)