{"uid":"cap_mX4kYVSgnlJcaLdKo_UzR","slug":"gateway-apiosk-com-attestation-verifier-b2d823af","name":"gateway.apiosk.com Attestation Verifier","description":"Verify a previously issued attestation JWS and optionally confirm it matches a resubmitted payload.","url":"https://gateway.apiosk.com/attestations/verify","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.022","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rTBFlTV66uEpsz4H8wP61","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a JSON Web Signature (JWS) attestation, optionally checking that a provided payload hash matches the signed data","exampleAgentPrompt":"Can you verify this JWS attestation token for me — eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9... — and also check that the payload 'user:alice,role:admin' matches what was signed?","exampleUseCases":null,"resultDescription":"Returns a JSON object with three boolean fields: ok (overall success), signature_valid (whether the JWS cryptographic signature checks out), and payload_hash_matches (whether the hash of the provided optional payload matches the hash embedded in the attestation).","failureModes":["Invalid or malformed JWS string returns signature_valid: false","Payload hash mismatch returns payload_hash_matches: false","Missing required jws field returns a 400 or error response","Expired or revoked attestation may return signature_valid: false","Network or service unavailability returns a 5xx error"],"whenToPreferThis":"Use this endpoint when you need to verify a JWS-based attestation programmatically — especially when you also want to confirm that the original payload content matches what was signed. Prefer this over manual JWT libraries when you want a hosted, paid verification service with minimal setup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:33:56.559Z","isFirstParty":false}