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.
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)
52ms
Uptime (30d)
100.0%
Reliability Score
100/100
Last Checked
2026-05-21 21:48:42
Last Healthy
2026-05-21 21:48:42
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-05-21 21:48:42 | healthy | 402 | 74ms | |
| 2026-05-21 12:45:36 | healthy | 402 | 616ms | |
| 2026-05-21 02:42:01 | healthy | 402 | 52ms | |
| 2026-05-20 17:22:22 | healthy | 402 | 51ms | |
| 2026-05-20 03:37:22 | healthy | 402 | 36ms | |
| 2026-05-19 20:47:43 | healthy | 402 | 52ms | |
| 2026-05-19 11:36:32 | healthy | 402 | 38ms | |
| 2026-05-18 23:12:37 | healthy | 402 | 39ms |