# HALOWERK Site Dossiers – Transport Corridor Terrain Screening

> HALOWERK Site Dossiers – Transport Corridor Terrain Screening is a paid API for AI agents from standortdossier.halowerk.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-15).

Generates a deterministic terrain-priority evidence score and six terrain measurements for a circular area to support transport corridor site screening decisions in Europe.

## Facts

- Endpoint: POST https://standortdossier.halowerk.com/v1/dossier-transport-corridor-terrain-first
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-site-dossiers-transport-corridor-terrain-screening-546b234d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QsdXiLJu3V4wvy16Vld7q

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-site-dossiers-transport-corridor-terrain-screening-546b234d -d '<json body>'
```

Example prompt: Can you run a transport corridor terrain screening dossier for the location at 51.3°N, 9.5°E with a 500-metre radius and give me the terrain-priority evidence score?

## When to prefer this

Choose this endpoint when you need a fast, low-cost, deterministic terrain screening signal for transport corridor routing in Europe and do not yet need a full engineering survey, permit, or legal land assessment. It is particularly suited for early-stage shortlisting of many candidate locations, where cost per call ($0.012) and speed matter more than exhaustive site investigation. Prefer alternatives (e.g. national mapping agencies or engineering consultants) when a legally binding site assessment or detailed ground-truth survey is required.

## Known failure modes

- Coordinates outside European coverage bounds (lat 34–72.5, lon -31.5–40.5) return a validation error
- Radius outside allowed range (50–2000 m) returns a parameter error
- Missing required latitude or longitude returns a 400 bad request
- Payment failure or insufficient USDC balance returns a 402 Payment Required
- Service unavailability returns a 503 with retry guidance

## How this service works

Decision-support dossier for transport corridor terrain screening using six disclosed measurements and a deterministic terrain-priority evidence score. It is screening evidence, not a permit, valuation or legal determination.

## Output

Returns a decision-support dossier containing six disclosed terrain measurements and a deterministic terrain-priority evidence score for the specified circular area. This is screening evidence only — not a permit, valuation, or legal determination — intended to support early-stage transport corridor routing decisions within European coverage (34°–72.5°N, 31.5°W–40.5°E).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "maximum": 72.5,
   "minimum": 34,
   "description": "WGS84 latitude inside the published European coverage."
  },
  "radius_m": {
   "type": "integer",
   "default": 250,
   "maximum": 2000,
   "minimum": 50
  },
  "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-site-dossiers-transport-corridor-terrain-screening-546b234d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from standortdossier.halowerk.com](https://www.zero.xyz/host/standortdossier.halowerk.com/llms.txt)