# HALOWERK Europe Land – SoilGrids Clay Fraction 0-5cm (1000m Buffer)

> HALOWERK Europe Land – SoilGrids Clay Fraction 0-5cm (1000m Buffer) is a paid API for AI agents from euroland.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids clay fraction for the 0-5 cm soil layer, computed over a 1,000-metre circular neighbourhood around a given European coordinate.

## Facts

- Endpoint: POST https://euroland.halowerk.com/v1/europe-soil-clay-buffer-1000m
- 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-europe-land-soilgrids-clay-fraction-0-5cm-1000m-buffer-369c82dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pqgfaAlR4NFfWnvNwvoVg

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-europe-land-soilgrids-clay-fraction-0-5cm-1000m-buffer-369c82dd -d '<json body>'
```

Example prompt: What's the mean clay fraction in the top 5 cm of soil at latitude 48.85, longitude 2.35 in Europe? Use a 1,000-metre neighbourhood around that point.

## When to prefer this

Choose this endpoint when you need soil clay fraction data specifically for a point location in Europe with a 1km spatial context — ideal for site assessments, agricultural planning, or environmental modelling where a neighbourhood average is more meaningful than a single pixel value. Prefer this over smaller-buffer or polygon-based siblings when the analysis area is approximately 1km radius and no polygon geometry is available.

## Known failure modes

- Coordinates outside the European coverage bounding box (lat 34–72.5, lon -31.5–40.5) return an error or empty result
- Invalid or missing latitude/longitude values cause a validation error
- Coordinates over open ocean or areas without SoilGrids coverage may return null or no-data
- Payment failure (x402 protocol) blocks the request before processing
- Server timeout for edge-case coordinates near coverage boundaries

## How this service works

Mean SoilGrids clay fraction for the 0-5 cm layer. The service evaluates a circular 1,000 metre neighborhood around one coordinate and returns standardized units across all 30 covered countries.

## Output

A numeric value representing the mean clay fraction (in standardized SoilGrids units, typically g/kg) for the 0-5 cm topsoil layer, spatially averaged over a 1,000-metre circular buffer around the supplied coordinate. Coverage spans 30 European countries.

## 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-europe-land-soilgrids-clay-fraction-0-5cm-1000m-buffer-369c82dd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from euroland.halowerk.com](https://www.zero.xyz/host/euroland.halowerk.com/llms.txt)