# HALOWERK Nordic Land – Denmark Tree Cover Share

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

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/dk-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-nordic-land-denmark-tree-cover-share-111e0644
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_axIa8pM6ShatcA8v_SI4A

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-denmark-tree-cover-share-111e0644 -d '<json body>'
```

Example prompt: What share of the land around latitude 55.676, longitude 12.568 in Denmark is classified as tree cover according to ESA WorldCover 2021?

## When to prefer this

Choose this endpoint when you need satellite-derived tree cover fraction specifically for a point location within Denmark, based on the authoritative ESA WorldCover 2021 dataset. It is ideal for environmental assessments, land use analysis, forestry planning, or carbon baseline work where precise geographic scoping to Denmark is required and per-query micro-payment via x402 is acceptable.

## Known failure modes

- Coordinate outside Denmark boundary: rejected before payment is processed
- Coordinate outside European coverage bounds (lat 34–72.5, lon -31.5–40.5): validation error
- Invalid or missing latitude/longitude: schema validation failure
- Payment failure via x402 protocol: call not processed
- Service unavailable: upstream ESA WorldCover data temporarily inaccessible

## How this service works

Share of ESA WorldCover 2021 pixels classified as tree cover. The coordinate is validated against the Natural Earth boundary for Denmark; 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 within the analysis area around the provided Danish coordinate. The coordinate is validated against the Natural Earth boundary for Denmark before the result is returned; points outside Denmark are rejected.

## 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-denmark-tree-cover-share-111e0644/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)