{"slug":"api-cryptoetfsentinel-com-v1-xbrl-fee-war-0f2810bc","name":"api.cryptoetfsentinel.com/v1/xbrl/fee-war","summary":"Crypto ETF Sentinel — Crypto ETF fee comparison: current expense ratio for every trading US spot crypto ETF, cheapest first, outlier-capped at 200 bps to drop bad XBRL extractions. Use when finding the lowest-cost Bitcoin, Ethereum or other crypto ETF, or benchmarking a fee. Optional crypto filter.","status":"live","indexable":true,"listed_since":"2026-10-25T17:52:57.224083Z","sources":[{"source":"x402_bazaar","external_id":"https://api.cryptoetfsentinel.com/v1/xbrl/fee-war","owner_address":"0x169bf49c6ee5a179190121ab8d180b50e31683d1","seen_at":"2026-10-26T15:43:06.518156Z","removed_at":null}],"endpoints":[{"url":"https://api.cryptoetfsentinel.com/v1/xbrl/fee-war","host":"api.cryptoetfsentinel.com","protocol":"x402","state":"live","last_probe_at":"2026-10-26T02:31:50.651888Z","last_ok_at":"2026-10-26T02:31:50.651888Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-cryptoetfsentinel-com-ffc0d867","name":"api.cryptoetfsentinel.com"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":2,"last_paid_at":"2026-10-08T05:34:35.560Z","reported_at":"2026-10-26T15:43:06.518156Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 12 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 0 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-26T14:49:58.014860Z"},"identity":{"endpoint_domains":["cryptoetfsentinel.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}