# HALOWERK Atlantic Land – France Tree Cover Share

> HALOWERK Atlantic Land – France Tree Cover 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 share of ESA WorldCover 2021 pixels classified as tree cover for a given coordinate within France.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/fr-tree-cover-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-tree-cover-share-7610de71
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JDSVNo4F29NdsmvmMyY4w

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-tree-cover-share-7610de71 -d '<json body>'
```

Example prompt: What share of the land around latitude 44.8, longitude 1.2 in France is classified as tree cover according to ESA WorldCover 2021?

## When to prefer this

Use this endpoint when you need tree cover fraction specifically for a point location within France, sourced from the authoritative ESA WorldCover 2021 classification. Prefer it over generic land cover APIs when you need a micro-payment per-query model, France-validated coordinates, and direct WorldCover pixel statistics rather than modeled or aggregated forest estimates.

## Known failure modes

- Coordinate outside France boundary: request rejected before payment, error indicating location is outside supported region
- Coordinate outside valid latitude range (34–72.5) or longitude range (−31.5–40.5): validation error
- Malformed or missing latitude/longitude fields: schema validation error
- Payment failure: x402 payment not completed, request not processed

## How this service works

Share of ESA WorldCover 2021 pixels classified as tree cover. The coordinate is validated against the Natural Earth boundary for France; results outside it are rejected before payment.

## Output

A numeric value representing the share (fraction or percentage) of ESA WorldCover 2021 pixels classified as tree cover at the given coordinate within France. Coordinates outside the validated Natural Earth boundary for France 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-tree-cover-share-7610de71/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)