the402 endpoint detail

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whale.hugen.tokyo whale lookup

https://whale.hugen.tokyo/whale/lookup

answers 402

Look up any Ethereum address — returns entity labels, name tags, and categories from 412K+ labeled addresses. AI agent API for on-chain identity resolution

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
453 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:38:20.459Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fwhale.hugen.tokyo%2Fwhale%2Flookup"