# HALOWERK Baltic Land – Local Relief (Germany)

> HALOWERK Baltic Land – Local Relief (Germany) is a paid API for AI agents from baltikum.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the local relief value (difference between maximum and minimum sampled surface elevation) for a given coordinate within Germany.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/de-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-baltic-land-local-relief-germany-9fafcad6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tPLWBLHOn39TwUCwz_jgb

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-baltic-land-local-relief-germany-9fafcad6 -d '<json body>'
```

Example prompt: What's the local relief — the difference between the highest and lowest surface elevation — at the location 52.5200° N, 13.4050° E in Germany?

## When to prefer this

Use this endpoint when you need a single-point local relief metric (max minus min elevation) specifically for a location in Germany. It is ideal for terrain characterization, site suitability analysis, flood risk screening, or any workflow that needs a fast, pay-per-call elevation variability estimate without setting up a full DEM pipeline. Prefer this over generic elevation APIs when you specifically need the relief (range) rather than absolute elevation, and when your target area is within Germany.

## Known failure modes

- Coordinate outside Germany boundary — request rejected before payment, no charge incurred
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Invalid or missing coordinate fields — schema validation failure
- Service unavailable or timeout — network or provider error

## How this service works

Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Germany; 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 elevation within the analysis grid around the queried coordinate. The coordinate must fall within Germany's boundary; requests outside it are rejected before any charge.

## 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-baltic-land-local-relief-germany-9fafcad6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from baltikum.halowerk.com](https://www.zero.xyz/host/baltikum.halowerk.com/llms.txt)