{"uid":"cap_k183xM9RWupAqRDLo6wr7","slug":"verification-oracle-293a2fb2","name":"Verification Oracle","description":"Verification Oracle: independent checks on another agent's work (citation support, data/schema validation) returning a wallet-signed attestation. $0.15 USDC per verification.","url":"https://attester.dev/verify","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.15","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":"$0.15/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.15","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-Z_TgvtWvUZYiX04MF80b","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.15","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies or attests claims, facts, or content via an oracle-style POST endpoint with per-call payment.","exampleAgentPrompt":"Can you verify this claim for me using the Verification Oracle: 'Company X was founded in 2010 and is headquartered in San Francisco'? I need an attestation result I can trust.","exampleUseCases":[{"title":"Attest product review authenticity","prompt":"I have a product review that I need verified before publishing it on our platform. Can you run it through the Verification Oracle to confirm whether the claims made in the review are accurate and get an attestation I can show to customers?"},{"title":"Validate on-chain contract claim","prompt":"We have a smart contract that references a real-world event — specifically that a shipment arrived on March 15th. Can you use the Verification Oracle to attest whether that claim is valid so we can trigger the contract payout with a defensible proof?"},{"title":"Confirm news article fact claim","prompt":"Before we share this news article, can you check one of its key claims — that the unemployment rate dropped to 3.8% last quarter — using the Verification Oracle? I need a trustworthy verification result with a confidence signal I can reference."}],"resultDescription":"The agent receives a verification or attestation result indicating whether the submitted claim or content is valid, including a judgment or confidence signal from the oracle.","failureModes":["Invalid or malformed claim input returns an error","Payment not included or insufficient (x402 payment required at $0.25 USDC) results in 402 response","Ambiguous or unverifiable claim may return low-confidence or inconclusive result","Network or service downtime results in 5xx error"],"whenToPreferThis":"Use this endpoint when you need an authoritative, oracle-style verification or attestation of a claim, fact, or piece of content — especially when trust, auditability, or a paid verification signal adds credibility. Prefer over free validators when the verification needs to be defensible or carries a cost-based trust signal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:35:27.671Z","isFirstParty":false}