# HALOWERK Land Compare – Cropland Share Two-Point Comparison

> HALOWERK Land Compare – Cropland Share Two-Point Comparison is a paid API for AI agents from landvergleich.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-15).

Measures and compares cropland share for exactly two European coordinates, returning the signed difference and identifying which location has greater cropland coverage.

## Facts

- Endpoint: POST https://landvergleich.halowerk.com/v1/compare-two-cropland-share
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-land-compare-cropland-share-two-point-comparison-edacd7f2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FSMu96JGW55vinbj1kPqi

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-land-compare-cropland-share-two-point-comparison-edacd7f2 -d '<json body>'
```

Example prompt: Compare the cropland share between these two locations in Europe: Brandenburg, Germany at longitude 13.5, latitude 52.4 and Normandy, France at longitude 0.5, latitude 49.1 — which one has a higher cropland share and by how much?

## When to prefer this

Use this endpoint when you need a direct pairwise comparison of cropland share between exactly two European geographic points. It is purpose-built for binary site comparison with a signed delta and winner declaration, making it more useful than querying each point separately when the relative agricultural character of two sites is the key question. Prefer this over multi-site ranking endpoints when only two coordinates are involved.

## Known failure modes

- Coordinates outside the European coverage bounds (latitude 34–72.5, longitude -31.5–40.5) will be rejected
- Fewer or more than exactly two location objects in the array cause a validation error
- Missing required longitude or latitude fields return a schema validation error
- Ambiguous or tied cropland shares may result in no clear winner being declared
- Payment failure or insufficient USDC balance blocks the request

## How this service works

Measures cropland share for exactly two European coordinates with one method and reports the signed difference and winner where meaningful.

## Output

Returns the cropland share value for each of the two input coordinates, the signed arithmetic difference between them (location A minus location B), and an indication of which location has the greater cropland share (the 'winner'), where meaningful.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "locations": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "longitude",
     "latitude"
    ],
    "properties": {
     "name": {
      "type": "string",
      "maxLength": 60,
      "minLength": 1
     },
     "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."
     }
    },
    "additionalProperties": false
   },
   "maxItems": 2,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-land-compare-cropland-share-two-point-comparison-edacd7f2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from landvergleich.halowerk.com](https://www.zero.xyz/host/landvergleich.halowerk.com/llms.txt)