# HALOWERK Atlantic Land – France Water & Wetland Share

> HALOWERK Atlantic Land – France Water & Wetland Share is a paid API for AI agents from atlantikland.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 France.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/fr-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-atlantic-land-france-water-wetland-share-1dae5c3b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JD3nLDv_nBAcOW8Hz-7-Q

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-atlantic-land-france-water-wetland-share-1dae5c3b -d '<json body>'
```

Example prompt: What is the combined permanent water, herbaceous wetland, and mangrove land-cover share at latitude 47.3, longitude -1.8 in France?

## When to prefer this

Choose this endpoint when you need a precise, point-level estimate of water and wetland land-cover density within France, particularly for environmental due diligence, hydrological risk assessment, ecological corridor analysis, or land suitability scoring. It is purpose-built for France with boundary validation, making it more reliable than generic global land-cover APIs when French territory coverage and data quality guarantees matter.

## Known failure modes

- Coordinate outside France boundary — request rejected before payment, validation error returned
- Latitude or longitude out of published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Malformed JSON body — 400 bad request
- Payment failure or insufficient USDC balance — 402 payment required
- Service unavailable or upstream data source error — 5xx response

## How this service works

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

## Output

A numeric fraction or percentage representing the combined ESA WorldCover 2021 share of pixels classified as permanent water, herbaceous wetland, and mangrove classes at the queried coordinate inside France. Coordinates outside the validated Natural Earth France boundary are rejected before any charge is applied.

## 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-atlantic-land-france-water-wetland-share-1dae5c3b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atlantikland.halowerk.com](https://www.zero.xyz/host/atlantikland.halowerk.com/llms.txt)