geoprimitives /v1/geometry/centroid APIPOST /v1/geometry/centroid · x402 API by geoprimitives
Find the area centroid of a polygon: a representative point for labelling, joining, or reverse geocoding a shape you only have a boundary for. It is the centre of mass of the area with holes subtracted, not the average of the vertices, so densely sampled edges do not drag it. Know what a centroid is not: on a concave or ring-shaped polygon the centre of mass can fall outside the polygon itself, and this endpoint returns it anyway rather than nudging the point inside. Test it with POST /v1/pip if you need a point that is guaranteed to be inside. Not turf's centroid, which is the arithmetic mean of the vertices and drifts towards whichever part of the boundary happens to be densely sampled. The moment integral is evaluated in a Lambert cylindrical equal-area projection of the WGS 84 authalic
What does this x402 API do?
geoprimitives /v1/geometry/centroid API. This is an x402-gated POST API resource from geoprimitives. TOLL·402 did not invoke this route automatically because doing so was not considered safe. No normalized USD price is recorded; the listing names Base. No settled paid call has been verified.
- Published price
- No normalized USD price is recorded
- Networks
- Base
- Latest evidence
- TOLL·402 did not invoke this route automatically because doing so was not considered safe
- Resource ID
- a5e122b0cac1b0d62bb10281
Start with a quote-only recipe. Payment signing stays in your project.
const response = await fetch("https://api.geoprimitives.dev/v1/geometry/centroid", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({
"type": "http",
"method": "POST",
"bodyType": "json",
"bodyFieldNames": [
"geojson"
],
"pathParamNames": [],
"queryParamNames": []
}),
});
console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));
// A valid 402 is a quote, not a completed paid call.Review the provider input schema before running this non-read-only method. No payment code is included.
- Exact route checked
not safely testable · potentially-mutating-method:POST
- Origin reachable
HEAD https://api.geoprimitives.dev/ returned 200.
- Observed in cdp-bazaar
The registry record was observed and retained with provenance.
What evidence supports this listing?
Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call. Read the discovery and verification methodology →
Which networks and payment options does it accept?
The normalized listing price is No normalized USD price is recorded. Raw protocol requirements remain visible below for implementation and audit use.