# HALOWERK Nordic Land – Water & Wetland Share (Iceland)

> HALOWERK Nordic Land – Water & Wetland Share (Iceland) 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 share of permanent water, herbaceous wetland, and mangrove land-cover classes for a WGS84 coordinate within Iceland, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/is-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-iceland-0fbed37a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NrPs2SVwNrNaFVyQ-kA3o

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-iceland-0fbed37a -d '<json body>'
```

Example prompt: What's the combined share of permanent water, wetland, and mangrove land cover at latitude 64.13, longitude -21.93 in Iceland?

## When to prefer this

Use this endpoint when you need a precise, per-point estimate of water and wetland land-cover fraction specifically within Iceland, derived from ESA WorldCover 2021 data. Prefer it over generic GIS APIs when you want a low-cost ($0.003/call), pre-validated, ready-to-use fraction rather than raw raster data. It is especially useful for environmental screening, habitat assessment, or land suitability workflows where wetland presence at a specific coordinate matters.

## Known failure modes

- Coordinate outside Iceland boundary → rejected before payment with a boundary validation error
- Latitude or longitude outside published European coverage range (lat 34–72.5, lon −31.5–40.5) → schema validation error
- Malformed or missing coordinate fields → 400-style input error
- Service unavailability or timeout → 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 Iceland; results outside it are rejected before payment.

## Output

A numeric value (or set of values) representing the combined share of ESA WorldCover 2021 permanent water, herbaceous wetland, and mangrove classes for the analysis area around the given coordinate. The coordinate is pre-validated against the Iceland Natural Earth boundary; requests outside Iceland are rejected before any charge is incurred.

## 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-iceland-0fbed37a/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)