# HALOWERK Eastern Land – Bulgaria Water & Wetland Share

> HALOWERK Eastern Land – Bulgaria Water & Wetland Share is a paid API for AI agents from ostland.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 Bulgaria.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/bg-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-eastern-land-bulgaria-water-wetland-share-82fc64d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NcunWDMheBl_q8UgREa5n

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-eastern-land-bulgaria-water-wetland-share-82fc64d7 -d '<json body>'
```

Example prompt: What's the combined share of permanent water, wetlands, and mangroves near latitude 42.698, longitude 23.322 in Bulgaria?

## When to prefer this

Choose this endpoint when you need a fast, paid, point-level lookup of water and wetland land-cover fraction specifically within Bulgaria, with built-in boundary validation. It is ideal for environmental screening, land suitability analysis, or geospatial data enrichment workflows that operate on Bulgarian coordinates and require ESA WorldCover-derived aquatic class shares.

## Known failure modes

- Coordinate outside Bulgaria boundary: request rejected before payment with a validation error
- Coordinate outside European coverage bounds (lat 34–72.5, lon -31.5–40.5): rejected with range error
- Malformed or missing latitude/longitude fields: schema validation error
- Network timeout or upstream data 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 Bulgaria; results outside it are rejected before payment.

## Output

A numeric share (fraction or percentage) representing the combined proportion of ESA WorldCover 2021 pixels at the queried coordinate classified as permanent water, herbaceous wetland, or mangrove — validated to be within Bulgaria's Natural Earth boundary.

## 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-eastern-land-bulgaria-water-wetland-share-82fc64d7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ostland.halowerk.com](https://www.zero.xyz/host/ostland.halowerk.com/llms.txt)