# HALOWERK Southern Land – Spain Water & Wetland Share

> HALOWERK Southern Land – Spain Water & Wetland Share is a paid API for AI agents from suedland.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 given coordinate within Spain, derived from ESA WorldCover 2021 data.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/es-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-southern-land-spain-water-wetland-share-e80a6ca6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tf9bc0EVlOaXetQwmids4

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-southern-land-spain-water-wetland-share-e80a6ca6 -d '<json body>'
```

Example prompt: What's the combined water, wetland, and mangrove land-cover share at latitude 39.47, longitude -0.38 in Spain? I need it to assess site moisture conditions.

## When to prefer this

Use this endpoint when you need a quick, pay-per-call lookup of water and wetland land-cover share for a specific point within Spain, particularly for land due diligence, environmental assessment, or site characterization workflows. Prefer it over full GIS pipelines when a single scalar summary is sufficient and cost efficiency matters. It is specifically validated against Spain's boundary, making it more reliable for Spanish coordinates than generic global endpoints.

## Known failure modes

- Coordinate outside Spain boundary — rejected before payment with a validation error
- Latitude or longitude out of the published European coverage range — schema validation error
- Non-numeric or missing coordinate values — request rejected with input error
- Network or server timeout — no result returned, retry advised

## How this service works

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

## Output

A numeric share (fraction or percentage) representing the combined proportion of ESA WorldCover 2021 pixels classified as permanent water, herbaceous wetland, or mangrove within the analysis area around the given coordinate. The coordinate is validated against the Natural Earth boundary for Spain before any result is returned.

## 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-southern-land-spain-water-wetland-share-e80a6ca6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suedland.halowerk.com](https://www.zero.xyz/host/suedland.halowerk.com/llms.txt)