# HALOWERK Nordic Land – Finland Local Relief (Elevation Range)

> HALOWERK Nordic Land – Finland Local Relief (Elevation Range) is a paid API for AI agents from nordland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns the difference between maximum and minimum sampled surface elevation (local relief) for a given WGS84 coordinate within Finland's boundary.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/fi-local-relief
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-nordic-land-finland-local-relief-elevation-range-497d30c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PnxVLgL3eTLFwO8mCRmRz

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-nordic-land-finland-local-relief-elevation-range-497d30c9 -d '<json body>'
```

Example prompt: What's the local relief — the difference between the highest and lowest surface elevation — at latitude 61.5, longitude 25.7 in Finland?

## When to prefer this

Use this endpoint when you need a point-level local relief metric specifically for locations within Finland. It is ideal for terrain analysis, infrastructure planning, environmental modelling, or any workflow that needs to quantify how much surface elevation varies near a Finnish coordinate. Prefer this over generic elevation APIs when you need a computed relief range rather than a raw elevation value, and when Finland-specific boundary validation is needed to ensure data quality.

## Known failure modes

- Coordinate outside Finland's Natural Earth boundary — request rejected with no charge
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Invalid or missing coordinate fields — input validation error
- Network or service unavailability — connection error

## How this service works

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

## Output

A numeric value representing the local relief in meters — the difference between the maximum and minimum sampled surface elevations within the analysis grid centered on the provided coordinate. Coordinates outside Finland's Natural Earth boundary are rejected before any payment is processed.

## 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-nordic-land-finland-local-relief-elevation-range-497d30c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nordland.halowerk.com](https://www.zero.xyz/host/nordland.halowerk.com/llms.txt)