# HALOWERK Baltic Land – Lithuania Water & Wetland Share

> HALOWERK Baltic Land – Lithuania Water & Wetland Share 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 combined share of permanent water, herbaceous wetland, and mangrove land-cover classes for a given coordinate within Lithuania.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/lt-water-wetland-share
- 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-lithuania-water-wetland-share-f3b23606
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uk7n1jo5gJEk6rt4X3IMb

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-lithuania-water-wetland-share-f3b23606 -d '<json body>'
```

Example prompt: What's the combined share of permanent water, herbaceous wetland, and mangrove cover at latitude 55.35, longitude 21.10 in Lithuania?

## When to prefer this

Choose this endpoint when you need granular, point-level water and wetland land-cover fractions specifically within Lithuania. It is pre-validated against Lithuania's boundary so invalid coordinates are rejected before payment, making it efficient for screening pipelines. Prefer it over general land-cover APIs when Baltic-specific coverage and the combined water+wetland+mangrove class breakdown matters for your use case.

## Known failure modes

- Coordinate outside Lithuania boundary — rejected pre-payment with a validation error
- Latitude or longitude out of European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Malformed or missing coordinate fields — 400-level error
- Temporary upstream data service unavailability — 5xx error

## How this service works

Combined share of permanent water, herbaceous wetland and mangrove classes. The coordinate is validated against the Natural Earth boundary for Lithuania; results outside it are rejected before payment.

## Output

A numeric fraction (or percentage share) representing the combined proportion of ESA WorldCover pixels classified as permanent water, herbaceous wetland, or mangrove within the analysis area surrounding the provided coordinate in Lithuania. Coordinates outside Lithuania's boundary are rejected before any charge is incurred.

## 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-lithuania-water-wetland-share-f3b23606/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)