# HALOWERK Baltic Land – Latvia Built-Up Land Share

> HALOWERK Baltic Land – Latvia Built-Up Land 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 share of ESA WorldCover 2021 pixels classified as built-up for a given coordinate within Latvia.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/lv-built-up-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-latvia-built-up-land-share-c5caa1b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nx2jQ2Omi5feXh2XXcdeH

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-built-up-land-share-c5caa1b0 -d '<json body>'
```

Example prompt: What share of land around latitude 56.946 longitude 24.105 in Riga, Latvia is classified as built-up according to ESA WorldCover 2021?

## When to prefer this

Choose this endpoint when you need a precise, pixel-level built-up land fraction for a specific point in Latvia derived from ESA WorldCover 2021, and you want boundary validation against Latvia's official Natural Earth polygon before any charge is incurred. Prefer it over generic land-cover APIs when your use case is specifically Latvia-scoped and you need pay-per-call pricing without subscription overhead.

## Known failure modes

- Coordinate outside Latvia boundary: rejected before payment, no charge incurred
- Coordinate outside European coverage bounds (lat 34–72.5, lon -31.5–40.5): validation error
- Invalid or missing latitude/longitude fields: schema validation failure
- Service unavailable: upstream WorldCover data fetch error

## How this service works

Share of ESA WorldCover 2021 pixels classified as built-up. The coordinate is validated against the Natural Earth boundary for Latvia; results outside it are rejected before payment.

## Output

A numeric share (fraction or percentage) of ESA WorldCover 2021 pixels in the analysis area around the given coordinate that are classified as built-up, returned only if the coordinate falls within Latvia'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-baltic-land-latvia-built-up-land-share-c5caa1b0/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)