# HALOWERK Baltic Land – Germany Tree Cover Share

> HALOWERK Baltic Land – Germany Tree Cover Share is a paid API for AI agents from baltikum.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 WGS84 coordinate within Germany.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/de-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-baltic-land-germany-tree-cover-share-c2e38a4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cHGY-LYRciuPphn12f7a8

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-baltic-land-germany-tree-cover-share-c2e38a4a -d '<json body>'
```

Example prompt: What share of ESA WorldCover 2021 pixels are classified as tree cover at latitude 52.5163 and longitude 13.3777 in Germany?

## When to prefer this

Choose this endpoint when you need a point-level ESA WorldCover 2021 tree cover fraction specifically within Germany. It is ideal for environmental analysis, land-use planning, site assessment, and green infrastructure monitoring workflows requiring authoritative satellite-derived land cover data. It complements sibling endpoints for built-up share, grassland share, soil properties, and terrain metrics on the same platform.

## Known failure modes

- Coordinate outside Germany boundary: request rejected before payment, no charge incurred
- Latitude or longitude out of European coverage range (lat 34–72.5, lon -31.5–40.5): validation error
- Invalid or malformed coordinate values: schema validation error
- Service unavailable or upstream ESA data issue: server error response

## How this service works

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

## Output

A numeric value (fraction or percentage) representing the share of ESA WorldCover 2021 pixels classified as tree cover at the queried coordinate. The coordinate is validated against the Natural Earth boundary for Germany; coordinates outside Germany are rejected before any payment is processed.

## 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-baltic-land-germany-tree-cover-share-c2e38a4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from baltikum.halowerk.com](https://www.zero.xyz/host/baltikum.halowerk.com/llms.txt)