# HALOWERK Eastern Land – Cyprus Soil Total Nitrogen (0-5 cm)

> HALOWERK Eastern Land – Cyprus Soil Total Nitrogen (0-5 cm) is a paid API for AI agents from ostland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids total nitrogen concentration for the 0–5 cm topsoil layer at a given coordinate within Cyprus, validated against the Natural Earth boundary.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-soil-nitrogen
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-eastern-land-cyprus-soil-total-nitrogen-0-5-cm-d60bb12b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rqOysAa2R1tACj_jNVPE9

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-eastern-land-cyprus-soil-total-nitrogen-0-5-cm-d60bb12b -d '<json body>'
```

Example prompt: What's the mean total nitrogen in the top 5 cm of soil at latitude 35.1, longitude 33.4 in Cyprus? I need the SoilGrids figure for that exact point.

## When to prefer this

Choose this endpoint when you need a reliable, boundary-validated SoilGrids total nitrogen value specifically for a point within Cyprus, at the 0–5 cm surface layer. It is ideal for agricultural planning, environmental assessments, or geospatial enrichment pipelines focused on Cyprus. Prefer it over generic SoilGrids APIs when built-in Cyprus boundary validation and cost-per-call pricing are desirable.

## Known failure modes

- Coordinate outside Cyprus boundary: rejected before payment, error indicating location is not within Cyprus
- Latitude or longitude outside declared European coverage range: validation error
- Missing required latitude or longitude field: request schema validation failure
- SoilGrids data unavailable for the exact coordinate: may return null or a no-data indicator

## How this service works

Mean SoilGrids total nitrogen for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Cyprus; results outside it are rejected before payment.

## Output

A numeric value representing the mean total nitrogen concentration in the 0–5 cm topsoil layer at the requested coordinate, sourced from SoilGrids. The coordinate must fall within the validated Natural Earth boundary for Cyprus; requests outside it 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-eastern-land-cyprus-soil-total-nitrogen-0-5-cm-d60bb12b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ostland.halowerk.com](https://www.zero.xyz/host/ostland.halowerk.com/llms.txt)