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Point-in-Polygon Test
x402
Point-in-Polygon Test is a paid API for AI agents from geospatial.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Tests whether a given lat/lon coordinate falls inside a specified polygon defined by an ordered list of vertices.
Price / call$0.002
Success—
StatusUnknown
How this service works
Test whether a coordinate falls inside a polygon.
Output
A boolean indicating whether the given point (lat/lon) is contained within the specified polygon, along with any relevant spatial metadata.
Example use cases
Delivery zone eligibility check
“A customer just gave me their location at latitude 37.7749, longitude -122.4194 — can you check if they're inside our delivery boundary? The zone is defined by these corners: (37.80, -122.45), (37.80, -122.38), (37.74, -122.38), (37.74, -122.45).”
Geofence alert for fleet tracking
“One of our vehicles just pinged at lat 51.5074, lon -0.1278 — check whether it's still inside the permitted operating zone, which is bounded by vertices: (51.52, -0.15), (51.52, -0.10), (51.49, -0.10), (51.49, -0.15).”
Land parcel boundary verification
“Does the survey coordinate 34.0522, -118.2437 fall inside the property boundary defined by these four corners: (34.06, -118.26), (34.06, -118.23), (34.04, -118.23), (34.04, -118.26)?”
Technical details
Endpoint
POSThttps://geospatial.openverbs.com/v1/point-in-polygonWhen to prefer
Use this endpoint when you need a fast, precise server-side point-in-polygon test for a single coordinate against a custom polygon boundary. Ideal for geofencing, delivery zone checks, land parcel validation, and regulatory boundary enforcement where you supply your own polygon vertices. Prefer this over client-side libraries when you want a stateless, pay-per-call API without managing geospatial dependencies.
Side effects
- Polygon has fewer than 3 vertices — returns validation error
- Latitude out of range (-90 to 90) or longitude out of range (-180 to 180) — returns schema validation error
- Polygon vertices exceed 10,000 item limit — returns error
- Malformed coordinate objects missing lat or lon fields — returns 400 error
- Self-intersecting or degenerate polygon may yield unexpected containment results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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