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api.cryptoetfsentinel.com xbrl fee-war
https://api.cryptoetfsentinel.com/v1/xbrl/fee-war
payable
Crypto ETF Sentinel — Crypto ETF fee comparison: current expense ratio for every trading US spot crypto ETF, sorted cheapest first — compare fees and find the lowest-cost Bitcoin, Ethereum and other crypto ETFs. Outlier-capped at 200bps to drop bad XBRL extractions.
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
- 2026-08-10T09:14:32.204Z (1d ago)
- Category
- web-scraping
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.cryptoetfsentinel.com%2Fv1%2Fxbrl%2Ffee-war"