the402 endpoint detail

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baltikum.halowerk.com v1 lv-local-relief

https://baltikum.halowerk.com/v1/lv-local-relief

answers 402

Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Latvia; results outside it are rejected before payment.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.003
Network
base
Pay to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
138 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:15:49.013Z (22d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fbaltikum.halowerk.com%2Fv1%2Flv-local-relief"