# HALOWERK Baltic Land – Latvia Solar Orientation Index

> HALOWERK Baltic Land – Latvia Solar Orientation Index is a paid API for AI agents from baltikum.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns a south-facing slope orientation index derived from aspect and slope for a given coordinate within Latvia.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/lv-solar-orientation
- 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-baltic-land-latvia-solar-orientation-index-65b41a30
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3l-JxIQRekSec5X6XT9K2

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-latvia-solar-orientation-index-65b41a30 -d '<json body>'
```

Example prompt: What's the south-facing solar orientation index for the location at latitude 56.95 and longitude 24.11 in Latvia? I want to assess whether this slope is well-oriented for solar panels.

## When to prefer this

Choose this endpoint when you need a fast, single-coordinate solar orientation index specifically for locations within Latvia. It is ideal for site screening workflows where boundary validation before billing is important. Prefer this over generic DEM or GIS APIs when you need a pre-computed, pay-per-call orientation score without managing raster data pipelines.

## Known failure modes

- Coordinate outside Latvia boundary — rejected before payment with a boundary validation error
- Latitude or longitude outside the published European coverage range — schema validation error
- Coordinate on flat terrain with no meaningful aspect — index may return null or zero
- Network timeout or service unavailability — standard HTTP 5xx error

## How this service works

South-facing slope orientation index derived from aspect and slope. The coordinate is validated against the Natural Earth boundary for Latvia; results outside it are rejected before payment.

## Output

A numeric south-facing slope orientation index computed from aspect and slope data for the queried Latvian coordinate. Coordinates outside the Latvia boundary (validated against Natural Earth) are rejected before any charge is applied.

## 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-latvia-solar-orientation-index-65b41a30/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)