{"uid":"cap__OeOgzjNPo-63GpPQrzPP","slug":"quantumshield-labs-verifier-21bea0f6","name":"QuantumShield Labs Verifier","description":"Classify an agent or automation operation from bounded evidence and return a deterministic execution receipt. Use when completion claims need independent machine-readable verification. Claims alone never produce VERIFIED_COMPLETE.","url":"https://verifier.quantumshieldlabs.dev/x402/verify","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"error":{},"blockers":{"type":"array"},"dependencies":{"type":"array"},"operation_id":{"type":"string","description":"Caller-controlled operation identifier"},"claimed_state":{"type":"string","description":"The operation state claimed by the caller"},"claimed_output":{"description":"Optional output claimed by the caller"},"evidence_items":{"type":"array","items":{"type":"object","required":["name"],"properties":{"name":{"type":"string"},"detail":{},"result":{},"source":{"type":"string"},"description":{"type":"string"}}}},"required_verifications":{"type":"array","items":{"type":"string"},"description":"Evidence names required for verified completion"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-qD-8K2qCC3VMPivx0tLB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Classifies agent or automation operations from submitted evidence and returns a deterministic, machine-readable execution receipt indicating verified or unverified completion status.","exampleAgentPrompt":"I need to verify that the data-export operation I just ran (operation ID 'export-2024-06-01') actually completed — here are the evidence items: a file checksum match, a row count confirmation, and a destination write acknowledgment. Those three are the required verifications. Can you submit these to the verifier and get me a machine-readable receipt?","exampleUseCases":[{"title":"Auditing autonomous agent task completion","prompt":"My agent claims it finished the 'customer-onboarding-run-447' operation with state 'SUCCESS', and I have three evidence items: a CRM record creation log, an email send confirmation, and an ID assignment. Required verifications are those three. Submit everything to the verifier and give me the execution receipt so I can confirm it's actually VERIFIED_COMPLETE."},{"title":"Pipeline step verification before handoff","prompt":"Before we hand off to the next stage, I need to verify that operation 'pipeline-step-etl-88' completed correctly — the claimed state is 'DONE' and the claimed output is a 1.2GB Parquet file. Evidence includes a file hash check and a row count assertion. Required verifications are both of those. Get me a deterministic receipt I can attach to the audit log."},{"title":"Catching unsubstantiated completion claims","prompt":"An automation just told me operation 'billing-cycle-close-99' is complete, but I only have one evidence item — a timestamp log — and no required verifications were specified. Run it through the verifier anyway and tell me whether the receipt comes back verified or not, so I know if I can trust the claim."}],"resultDescription":"A deterministic execution receipt classifying the operation as VERIFIED_COMPLETE or another state, based on whether the submitted evidence items satisfy the required_verifications. The receipt is machine-readable and independent of the caller's claims alone — claims without sufficient evidence will not produce VERIFIED_COMPLETE.","failureModes":["Insufficient evidence items relative to required_verifications results in a non-verified classification rather than an error","Missing operation_id may cause receipt to be unattributable","Malformed evidence_items objects (missing required 'name' field) will likely cause a 400 validation error","Claimed state unsupported or unrecognized may result in classification failure","Network or payment failure (x402) returns 402 Payment Required before any verification occurs"],"whenToPreferThis":"Use this endpoint when an AI agent or automation pipeline needs independent, tamper-resistant verification of task completion — especially when downstream decisions depend on confirmed execution rather than self-reported claims. Prefer it over simple logging or self-attestation when auditability, accountability, or multi-party trust is required. It is particularly valuable in agentic workflows where a downstream agent or human must trust that a prior step actually completed with specific outputs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:30:11.196Z","isFirstParty":false}