the402 endpoint detail

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chain.openverbs.com v1 address

https://chain.openverbs.com/v1/address

answers 402

Live state of an address: native balance (wei + ether), transaction count (nonce), and whether it's a contract or an externally-owned account (with deployed code size). Reads live on-chain data with automatic endpoint fallback.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
195 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:19:54.055Z (21d ago)
Category
finance-crypto

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