{"slug":"quartermaster-balance-check-2f4490e2","name":"Quartermaster Balance Check","summary":"Check ETH and USDC (or any ERC-20) balance of an address on Base — pre-flight funding checks for payments and settlement.","status":"live","indexable":true,"listed_since":"2026-10-25T17:50:14.154419Z","sources":[{"source":"x402_bazaar","external_id":"https://quartermaster.surewhynot.app/v1/balance","owner_address":"0x5253666c40432f009ebd99908b9cd2a7fd1019cb","seen_at":"2026-10-26T05:59:05.592438Z","removed_at":null}],"endpoints":[{"url":"https://quartermaster.surewhynot.app/v1/balance","host":"quartermaster.surewhynot.app","protocol":"x402","state":"live","last_probe_at":"2026-10-25T18:19:41.666615Z","last_ok_at":"2026-10-25T18:19:41.666615Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"quartermaster-surewhynot-app-194d7400","name":"quartermaster.surewhynot.app"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":9,"paid_calls_30d":13,"last_paid_at":"2026-10-25T20:47:15.462Z","reported_at":"2026-10-26T05:59:05.592438Z"},"notice":"Not affiliated with addrbook — claim or request removal."}