# HALOWERK Eastern Land – Cyprus Local Relief Range

> HALOWERK Eastern Land – Cyprus Local Relief Range 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 local relief range (max minus min surface elevation) for a coordinate point validated against the Cyprus boundary.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-local-relief
- 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-cyprus-local-relief-range-a4102af1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VjkQYr60N_0s8Y6VUU0T7

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-local-relief-range-a4102af1 -d '<json body>'
```

Example prompt: What's the local relief range — the difference between the highest and lowest surface elevations — at latitude 35.1264, longitude 33.4299 in Cyprus?

## When to prefer this

Choose this endpoint when you need a single local relief range metric (elevation max minus min) for a specific point in Cyprus. It is ideal for terrain ruggedness assessment, site suitability analysis, or ecological characterization workflows scoped to Cyprus. Prefer it over generic elevation APIs when Cyprus boundary validation and pay-per-call pricing ($0.003 USDC) are acceptable, and when you need specifically the relief range rather than mean, standard deviation, or slope metrics (which are available as sibling endpoints).

## Known failure modes

- Coordinate outside Cyprus Natural Earth boundary — request rejected with validation error before payment
- Latitude or longitude out of European coverage bounds (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Malformed or missing latitude/longitude fields — bad request error
- Service unavailability or timeout — upstream elevation data unreachable

## How this service works

Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Cyprus; results outside it are rejected before payment.

## Output

A numeric value representing the difference between the maximum and minimum sampled surface elevations within the analysis grid around the provided Cyprus coordinate. Points outside the Cyprus boundary are rejected before the computation is performed and payment 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-cyprus-local-relief-range-a4102af1/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)