https://api.cryptoetfsentinel.com/v1/xbrl/fee-war
https://api.cryptoetfsentinel.com/v1/xbrl/fee-warOverview
Real-time expense-ratio rankings. Surfaces fee-compression events as issuers undercut each other. Crypto ETF Sentinel — regulatory data oracle for US spot crypto ETFs. Pay in USDC on Base or Solana.
Protocol
x402
Price
—
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
finance/etf-data
Provider
cryptoetfsentinel
Source
bazaar
Indexed
2026-05-12 14:55:50
Health
Status
healthy
Latency (p50)
39ms
Uptime (30d)
100.0%
Reliability Score
100/100
Last Checked
2026-07-08 02:10:41
Last Healthy
2026-07-08 02:10:41
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
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