# HALOWERK Eastern Land – Hungary Aspect Direction

> HALOWERK Eastern Land – Hungary Aspect Direction is a paid API for AI agents from ostland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the circular compass direction (clockwise from north) of the dominant surface gradient for a given coordinate within Hungary.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/hu-aspect
- 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-eastern-land-hungary-aspect-direction-3de6e54d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xxg2-7cP0oDaeghTxS1rd

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-hungary-aspect-direction-3de6e54d -d '<json body>'
```

Example prompt: What direction does the slope face at latitude 47.65, longitude 19.08 in Hungary? I need the aspect angle clockwise from north for that coordinate.

## When to prefer this

Use this endpoint when you need the terrain aspect (slope-facing direction) specifically for a point within Hungary and want boundary validation enforced before payment. Prefer this over general-purpose DEM APIs when working within the Hungarian national boundary, especially in workflows combining multiple HALOWERK Eastern Land terrain metrics (slope, ruggedness, tree cover, soil) for the same coordinate.

## Known failure modes

- Coordinate outside Hungary boundary — request rejected before payment, no result returned
- Coordinate within European bounding box but outside Hungary polygon — boundary validation fails
- Invalid or missing latitude/longitude values — input schema validation error
- Latitude/longitude at flat terrain with no dominant gradient — result may be undefined or edge-case value
- Network or payment processing failure — no result returned

## How this service works

Circular direction of the dominant surface gradient, clockwise from north. The coordinate is validated against the Natural Earth boundary for Hungary; results outside it are rejected before payment.

## Output

A numeric value representing the circular compass bearing (in degrees, clockwise from north) of the dominant surface gradient at the requested coordinate. Coordinates outside the Hungary boundary are rejected before any payment is charged.

## 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-hungary-aspect-direction-3de6e54d/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)