{"service":"api.xfuel.app","endpoint":"https://api.xfuel.app/v1/chat/completions","verdict":"AVOID","scores":{"reliability":2,"quality":1,"value":0,"docs":2},"measured":{"latency_p50_ms":null,"latency_p95_ms":null,"error_rate":1,"calls_tested":0},"price_per_call":"0.002 USDC","receipts":[],"refund_behavior":"none","note":"no verified delivery: challenge_parse_failed: 1 validation error for PaymentRequired\nerror\n  Input should be a valid string [type=string_type, input_value={'message': 'Payment requ...de': 'payment_requi","methodology_version":"0.1","updated_at":"2026-10-02 10:28:38"}