the402 endpoint detail

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api.cryptoetfsentinel.com xbrl leaderboard

https://api.cryptoetfsentinel.com/v1/xbrl/leaderboard

payable

Crypto ETF Sentinel — Crypto ETF AUM leaderboard: top-N US spot crypto ETF issuers ranked by assets under management (or another XBRL TIER1 concept). See the largest Bitcoin, Ethereum and other crypto ETFs by fund size, from daily-updated XBRL facts.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.10
Network
base
Pay to
0x169Bf49c6ee5A179190121Ab8D180B50e31683d1
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
135 ms
Payment options
2 usable of 2
Last checked
2026-08-10T09:14:31.927Z (1d ago)
Category
other

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.cryptoetfsentinel.com%2Fv1%2Fxbrl%2Fleaderboard"