# HALOWERK Nordic Land – Norway Tree Cover Share

> HALOWERK Nordic Land – Norway 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 Norway.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/no-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-norway-tree-cover-share-964fb6e6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wFDpSuM2h8oB_VxW03RoT

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-norway-tree-cover-share-964fb6e6 -d '<json body>'
```

Example prompt: What share of the land around latitude 60.39 and longitude 5.32 in Norway is classified as tree cover according to ESA WorldCover satellite data?

## When to prefer this

Choose this endpoint when you need ESA WorldCover 2021 satellite-derived tree cover fraction specifically for coordinates within Norway. It is ideal for forestry analysis, ecological assessments, carbon estimation, land-use planning, or environmental monitoring workflows that require authoritative satellite land cover data at a specific point. It complements sibling endpoints on the same platform for soil properties, elevation, and wetland coverage.

## Known failure modes

- Coordinate falls outside Norway's Natural Earth boundary — request rejected before payment
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed input (non-numeric coordinates, missing fields) — schema validation error
- Payment failure — call not executed if x402 payment is declined

## How this service works

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

## Output

Returns the share (fraction or percentage) of ESA WorldCover 2021 pixels classified as tree cover for the queried coordinate within Norway. The coordinate is validated against Norway's Natural Earth boundary before payment is charged; out-of-bounds coordinates 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-norway-tree-cover-share-964fb6e6/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)