# HALOWERK Southern Land – Spain Soil Sand Fraction (0-5 cm)

> HALOWERK Southern Land – Spain Soil Sand Fraction (0-5 cm) is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids sand fraction for the 0–5 cm soil layer at a given coordinate within Spain, validated against the Natural Earth Spain boundary.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/es-soil-sand
- 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-southern-land-spain-soil-sand-fraction-0-5-cm-2e5f04eb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NopAWI-pKv6I6NdbhNH-h

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-southern-land-spain-soil-sand-fraction-0-5-cm-2e5f04eb -d '<json body>'
```

Example prompt: What's the sand fraction in the top 5 cm of soil at latitude 37.45, longitude -5.98 in Spain?

## When to prefer this

Use this endpoint when you need precise, point-level SoilGrids sand fraction data specifically for locations within Spain. It is ideal when you need validated, boundary-checked results (rejecting out-of-country points automatically) and when you require the 0–5 cm topsoil layer specifically. Prefer this over generic soil APIs when working with Spanish agricultural, environmental, or land-use workflows that need reliable surface sand fraction data.

## Known failure modes

- Coordinate outside Spain boundary: request rejected before payment is processed
- Latitude or longitude out of published European coverage range (34–72.5°N, -31.5–40.5°E): validation error
- Invalid coordinate format: schema validation failure
- Network or service timeout: no result returned
- Ambiguous edge-case coordinates near the Spain border may be inconsistently accepted or rejected

## How this service works

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

## Output

A numeric value representing the mean sand fraction (likely as a percentage or proportion) of the 0–5 cm soil layer at the specified coordinate, derived from SoilGrids data. Returns an error or rejection if the coordinate falls outside the Natural Earth boundary for Spain.

## 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-southern-land-spain-soil-sand-fraction-0-5-cm-2e5f04eb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suedland.halowerk.com](https://www.zero.xyz/host/suedland.halowerk.com/llms.txt)