the402 endpoint detail

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api.geoprimitives.dev geojson validate

https://api.geoprimitives.dev/v1/geojson/validate

answers 402

Validate GeoJSON against RFC 7946 and get back a structured list of problems, not a bare boolean. Checks structure, coordinate range, ring closure, ring winding order, consecutive duplicate vertices, self-intersections, and hole nesting. Every issue carries the feature, geometry, ring and position index it sits on, so a 500-feature collection is actionable rather than merely condemned. Reach for i

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0x76A51b5Dd3729950B3b60c17f19252d221968FCe
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
270 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:13:21.233Z (2h ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.geoprimitives.dev%2Fv1%2Fgeojson%2Fvalidate"