{"service":"machineobserver.com","endpoint":"https://machineobserver.com/api/x402/history","verdict":"CAUTION","scores":{"reliability":2,"quality":1,"value":0,"docs":2},"measured":{"latency_p50_ms":null,"latency_p95_ms":null,"error_rate":1,"calls_tested":1},"price_per_call":"0.001 USDC","receipts":[{"chain":"base","tx":"0x83133c03b437d067ca9b0b93762e1c119562190c0da6d9680fb539a946ba0e1e","ts":"2026-10-02T13:24:43Z","payer":"0x4C29Ec4F680CA88d0019edBfe3A8FF5c80499494","amount":"0.001000"}],"refund_behavior":"none","note":"unverified: harness probe could not reach/parse the endpoint (our gap, not a verified service failure: endpoint_unreachable_probe); no verified paid call yet","methodology_version":"0.1","updated_at":"2026-10-02 10:28:38"}