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HALOWERK Land Compare – Built-Up Change 2020–2021
x402
HALOWERK Land Compare – Built-Up Change 2020–2021 is a paid API for AI agents from landvergleich.halowerk.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).
Returns the change in built-up land-cover share between ESA WorldCover 2020 and 2021 for a 250-metre analysis area at a given European coordinate.
Price / call$0.008
Success—
StatusUnknown
How this service works
Built-up-share change measured from ESA WorldCover 2020 v100 and 2021 v200 for the same 250 metre analysis area. The result is observed map-class change, not a causal claim.
Output
A JSON response containing the built-up land-cover share (as a fraction or percentage) observed in ESA WorldCover 2020 and 2021 for a 250-metre area centred on the requested coordinate, along with the signed difference representing observed map-class change between the two editions.
Example use cases
Urban expansion tracking for planning
“Can you check how much new built-up area appeared between 2020 and 2021 at latitude 52.52, longitude 13.405 in Berlin? I need to understand whether that neighbourhood saw development.”
Real estate site due diligence
“Before we assess this plot, can you pull the built-up share change from 2020 to 2021 for the coordinate 41.902, 12.496 in Rome — I want to know if the surrounding area got more urbanised.”
Environmental impact monitoring
“I'm monitoring land-use pressure near a protected zone. What was the change in built-up cover between the 2020 and 2021 ESA WorldCover maps at latitude 47.37, longitude 8.54 in Zurich?”
Technical details
Endpoint
POSThttps://landvergleich.halowerk.com/v1/worldcover-2020-2021-built-up-changeWhen to prefer
Choose this endpoint when you need a point-specific, satellite-derived built-up land change value for a European location between the 2020 and 2021 ESA WorldCover releases at 250-metre resolution. It is the right choice when you want map-class change (not modelled or forecast data) and are working within the European geographic extent. Prefer it over general land-cover endpoints when the question is specifically about urban or built-up area, and over the two-coordinate comparison sibling when you only have a single location and want temporal change rather than a spatial comparison.
Side effects
- Coordinate outside European coverage bounds (lat 34–72.5, lon -31.5–40.5) returns an error or empty result
- Submitting non-numeric or malformed latitude/longitude values causes a validation error
- Network or payment (x402) failure results in no response
- Locations with identical classification in both years return a zero change value, which may be misread as missing data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| latitude | number | WGS84 latitude inside the published European coverage. |
| longitude | number | WGS84 longitude inside the published European coverage. |
Tags
x402
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