the402 endpoint detail

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url.openverbs.com v1 query

https://url.openverbs.com/v1/query

answers 402

Two directions over query strings. action='parse' decodes a query string (with or without a leading '?') into an object, collapsing repeated keys into arrays. action='build' encodes a params object into a query string, expanding array values into repeated keys; set sort=true to order keys alphabetically.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.002
Network
base
Pay to
0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
239 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:20:12.916Z (21d ago)
Category
search

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Furl.openverbs.com%2Fv1%2Fquery"